diff --git a/.eslintignore b/.eslintignore
index ea5b04aeb..c4a0963e9 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -5,3 +5,4 @@ build/
 docs/
 protos/
 samples/generated/
+system-test/**/fixtures
diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index a3d003c65..fbf0659c3 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:e08f9a3757808cdaf7a377e962308c65c4d7eff12db206d4fae702dd50d43430
-# created: 2023-08-03T18:46:14.719706948Z
+  digest: sha256:bfe4592953269bfa8d135200ca1b17809f106a337a885d7ecc12cd2a9998e98a
+# created: 2023-11-15T20:00:24.246072277Z
diff --git a/.github/sync-repo-settings.yaml b/.github/sync-repo-settings.yaml
index 1350faeff..b46e4c4d6 100644
--- a/.github/sync-repo-settings.yaml
+++ b/.github/sync-repo-settings.yaml
@@ -7,7 +7,6 @@ branchProtectionRules:
     requiredStatusCheckContexts:
       - "ci/kokoro: Samples test"
       - "ci/kokoro: System test"
-      - docs
       - lint
       - test (14)
       - test (16)
diff --git a/.github/workflows/system-tests-against-emulator.yaml b/.github/workflows/system-tests-against-emulator.yaml
index 3487cb4ca..3df4a38ec 100644
--- a/.github/workflows/system-tests-against-emulator.yaml
+++ b/.github/workflows/system-tests-against-emulator.yaml
@@ -16,7 +16,7 @@ jobs:
           - 9020:9020
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
       - uses: actions/setup-node@v3
         with:
           node-version: 14
diff --git a/.kokoro/release/docs-devsite.sh b/.kokoro/release/docs-devsite.sh
index 3596c1e4c..81a89f6c1 100755
--- a/.kokoro/release/docs-devsite.sh
+++ b/.kokoro/release/docs-devsite.sh
@@ -25,6 +25,6 @@ if [[ -z "$CREDENTIALS" ]]; then
 fi
 
 npm install
-npm install --no-save @google-cloud/cloud-rad@^0.3.7
+npm install --no-save @google-cloud/cloud-rad@^0.4.0
 # publish docs to devsite
 npx @google-cloud/cloud-rad . cloud-rad
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4fd1215fb..13aa34cf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,23 @@
 
 [1]: https://www.npmjs.com/package/nodejs-spanner?activeTab=versions
 
+## [7.1.0](https://github.com/googleapis/nodejs-spanner/compare/v7.0.0...v7.1.0) (2023-11-16)
+
+
+### Features
+
+* Add PG.OID type cod annotation ([69192b5](https://github.com/googleapis/nodejs-spanner/commit/69192b50ead0bde98676cb647ba4bf8a3112bb02))
+* **spanner:** Add autoscaling config to the instance proto ([#1935](https://github.com/googleapis/nodejs-spanner/issues/1935)) ([fe285c6](https://github.com/googleapis/nodejs-spanner/commit/fe285c67074ba36aaf5b49ea867c0d5851d83717))
+* **spanner:** Add directed_read_option in spanner.proto ([69192b5](https://github.com/googleapis/nodejs-spanner/commit/69192b50ead0bde98676cb647ba4bf8a3112bb02))
+
+
+### Bug Fixes
+
+* **deps:** Update dependency @types/stack-trace to v0.0.31 ([#1924](https://github.com/googleapis/nodejs-spanner/issues/1924)) ([96af405](https://github.com/googleapis/nodejs-spanner/commit/96af4051c6717dfcbbc6e117e3ecd7f8e9dd758a))
+* **deps:** Update dependency @types/stack-trace to v0.0.32 ([#1939](https://github.com/googleapis/nodejs-spanner/issues/1939)) ([cb66474](https://github.com/googleapis/nodejs-spanner/commit/cb66474e995a90c1288e70842f723c51f1ffd37d))
+* **deps:** Update dependency google-gax to v4.0.4 ([#1926](https://github.com/googleapis/nodejs-spanner/issues/1926)) ([361fe6a](https://github.com/googleapis/nodejs-spanner/commit/361fe6a812f56c6834f1f7c7db60fc1083243768))
+* **deps:** Update dependency google-gax to v4.0.5 ([#1937](https://github.com/googleapis/nodejs-spanner/issues/1937)) ([ab26075](https://github.com/googleapis/nodejs-spanner/commit/ab260759be2fcc9ff80342f710b4c807742da2c5))
+
 ## [7.0.0](https://github.com/googleapis/nodejs-spanner/compare/v6.16.0...v7.0.0) (2023-08-30)
 
 
diff --git a/package.json b/package.json
index 7d5587911..6a2eba758 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/spanner",
   "description": "Cloud Spanner Client Library for Node.js",
-  "version": "7.0.0",
+  "version": "7.1.0",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {
@@ -57,7 +57,7 @@
     "@google-cloud/promisify": "^4.0.0",
     "@grpc/proto-loader": "^0.7.0",
     "@types/big.js": "^6.0.0",
-    "@types/stack-trace": "0.0.29",
+    "@types/stack-trace": "0.0.32",
     "arrify": "^2.0.0",
     "big.js": "^6.0.0",
     "checkpoint-stream": "^0.1.1",
@@ -65,7 +65,7 @@
     "events-intercept": "^2.0.0",
     "extend": "^3.0.2",
     "google-auth-library": "^9.0.0",
-    "google-gax": "^4.0.3",
+    "google-gax": "4.0.5",
     "grpc-gcp": "^1.0.0",
     "is": "^3.2.1",
     "lodash.snakecase": "^4.1.1",
@@ -82,7 +82,7 @@
   "devDependencies": {
     "@types/concat-stream": "^2.0.0",
     "@types/extend": "^3.0.0",
-    "@types/is": "0.0.22",
+    "@types/is": "0.0.24",
     "@types/lodash.snakecase": "^4.1.4",
     "@types/merge-stream": "^1.1.2",
     "@types/mocha": "^9.0.0",
@@ -99,7 +99,7 @@
     "concat-stream": "^2.0.0",
     "dedent": "^0.7.0",
     "execa": "^5.0.0",
-    "gapic-tools": "^0.1.8",
+    "gapic-tools": "^0.2.0",
     "gts": "^5.0.0",
     "jsdoc": "^4.0.0",
     "jsdoc-fresh": "^2.0.0",
diff --git a/protos/google/spanner/admin/instance/v1/spanner_instance_admin.proto b/protos/google/spanner/admin/instance/v1/spanner_instance_admin.proto
index 0b4a35705..58051df00 100644
--- a/protos/google/spanner/admin/instance/v1/spanner_instance_admin.proto
+++ b/protos/google/spanner/admin/instance/v1/spanner_instance_admin.proto
@@ -562,6 +562,66 @@ message InstanceConfig {
   State state = 11 [(google.api.field_behavior) = OUTPUT_ONLY];
 }
 
+// Autoscaling config for an instance.
+message AutoscalingConfig {
+  // The autoscaling limits for the instance. Users can define the minimum and
+  // maximum compute capacity allocated to the instance, and the autoscaler will
+  // only scale within that range. Users can either use nodes or processing
+  // units to specify the limits, but should use the same unit to set both the
+  // min_limit and max_limit.
+  message AutoscalingLimits {
+    // The minimum compute capacity for the instance.
+    oneof min_limit {
+      // Minimum number of nodes allocated to the instance. If set, this number
+      // should be greater than or equal to 1.
+      int32 min_nodes = 1;
+
+      // Minimum number of processing units allocated to the instance. If set,
+      // this number should be multiples of 1000.
+      int32 min_processing_units = 2;
+    }
+
+    // The maximum compute capacity for the instance. The maximum compute
+    // capacity should be less than or equal to 10X the minimum compute
+    // capacity.
+    oneof max_limit {
+      // Maximum number of nodes allocated to the instance. If set, this number
+      // should be greater than or equal to min_nodes.
+      int32 max_nodes = 3;
+
+      // Maximum number of processing units allocated to the instance. If set,
+      // this number should be multiples of 1000 and be greater than or equal to
+      // min_processing_units.
+      int32 max_processing_units = 4;
+    }
+  }
+
+  // The autoscaling targets for an instance.
+  message AutoscalingTargets {
+    // Required. The target high priority cpu utilization percentage that the
+    // autoscaler should be trying to achieve for the instance. This number is
+    // on a scale from 0 (no utilization) to 100 (full utilization). The valid
+    // range is [10, 90] inclusive.
+    int32 high_priority_cpu_utilization_percent = 1
+        [(google.api.field_behavior) = REQUIRED];
+
+    // Required. The target storage utilization percentage that the autoscaler
+    // should be trying to achieve for the instance. This number is on a scale
+    // from 0 (no utilization) to 100 (full utilization). The valid range is
+    // [10, 100] inclusive.
+    int32 storage_utilization_percent = 2
+        [(google.api.field_behavior) = REQUIRED];
+  }
+
+  // Required. Autoscaling limits for an instance.
+  AutoscalingLimits autoscaling_limits = 1
+      [(google.api.field_behavior) = REQUIRED];
+
+  // Required. The autoscaling targets for an instance.
+  AutoscalingTargets autoscaling_targets = 2
+      [(google.api.field_behavior) = REQUIRED];
+}
+
 // An isolated set of Cloud Spanner resources on which databases can be hosted.
 message Instance {
   option (google.api.resource) = {
@@ -606,8 +666,12 @@ message Instance {
   string display_name = 3 [(google.api.field_behavior) = REQUIRED];
 
   // The number of nodes allocated to this instance. At most one of either
-  // node_count or processing_units should be present in the message. This
-  // may be zero in API responses for instances that are not yet in state
+  // node_count or processing_units should be present in the message.
+  //
+  // Users can set the node_count field to specify the target number of nodes
+  // allocated to the instance.
+  //
+  // This may be zero in API responses for instances that are not yet in state
   // `READY`.
   //
   // See [the
@@ -616,14 +680,26 @@ message Instance {
   int32 node_count = 5;
 
   // The number of processing units allocated to this instance. At most one of
-  // processing_units or node_count should be present in the message. This may
-  // be zero in API responses for instances that are not yet in state `READY`.
+  // processing_units or node_count should be present in the message.
+  //
+  // Users can set the processing_units field to specify the target number of
+  // processing units allocated to the instance.
+  //
+  // This may be zero in API responses for instances that are not yet in state
+  // `READY`.
   //
   // See [the
   // documentation](https://cloud.google.com/spanner/docs/compute-capacity)
   // for more information about nodes and processing units.
   int32 processing_units = 9;
 
+  // Optional. The autoscaling configuration. Autoscaling is enabled if this
+  // field is set. When autoscaling is enabled, node_count and processing_units
+  // are treated as OUTPUT_ONLY fields and reflect the current compute capacity
+  // allocated to the instance.
+  AutoscalingConfig autoscaling_config = 17
+      [(google.api.field_behavior) = OPTIONAL];
+
   // Output only. The current instance state. For
   // [CreateInstance][google.spanner.admin.instance.v1.InstanceAdmin.CreateInstance],
   // the state must be either omitted or set to `CREATING`. For
diff --git a/protos/google/spanner/v1/spanner.proto b/protos/google/spanner/v1/spanner.proto
index 0c71e03d9..367928a45 100644
--- a/protos/google/spanner/v1/spanner.proto
+++ b/protos/google/spanner/v1/spanner.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,6 +16,8 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
+import public "google/spanner/v1/commit_response.proto";
+
 import "google/api/annotations.proto";
 import "google/api/client.proto";
 import "google/api/field_behavior.proto";
@@ -24,7 +26,6 @@ import "google/protobuf/empty.proto";
 import "google/protobuf/struct.proto";
 import "google/protobuf/timestamp.proto";
 import "google/rpc/status.proto";
-import public "google/spanner/v1/commit_response.proto";
 import "google/spanner/v1/keys.proto";
 import "google/spanner/v1/mutation.proto";
 import "google/spanner/v1/result_set.proto";
@@ -84,7 +85,8 @@ service Spanner {
   //
   // This API can be used to initialize a session cache on the clients.
   // See https://goo.gl/TgSFN2 for best practices on session cache management.
-  rpc BatchCreateSessions(BatchCreateSessionsRequest) returns (BatchCreateSessionsResponse) {
+  rpc BatchCreateSessions(BatchCreateSessionsRequest)
+      returns (BatchCreateSessionsResponse) {
     option (google.api.http) = {
       post: "/v1/{database=projects/*/instances/*/databases/*}/sessions:batchCreate"
       body: "*"
@@ -127,10 +129,12 @@ service Spanner {
   //
   // Operations inside read-write transactions might return `ABORTED`. If
   // this occurs, the application should restart the transaction from
-  // the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
+  // the beginning. See [Transaction][google.spanner.v1.Transaction] for more
+  // details.
   //
   // Larger result sets can be fetched in streaming fashion by calling
-  // [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.
+  // [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql]
+  // instead.
   rpc ExecuteSql(ExecuteSqlRequest) returns (ResultSet) {
     option (google.api.http) = {
       post: "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeSql"
@@ -138,11 +142,11 @@ service Spanner {
     };
   }
 
-  // Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result
-  // set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there
-  // is no limit on the size of the returned result set. However, no
-  // individual row in the result set can exceed 100 MiB, and no
-  // column value can exceed 10 MiB.
+  // Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the
+  // result set as a stream. Unlike
+  // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], there is no limit on
+  // the size of the returned result set. However, no individual row in the
+  // result set can exceed 100 MiB, and no column value can exceed 10 MiB.
   rpc ExecuteStreamingSql(ExecuteSqlRequest) returns (stream PartialResultSet) {
     option (google.api.http) = {
       post: "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeStreamingSql"
@@ -155,13 +159,15 @@ service Spanner {
   // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
   //
   // Statements are executed in sequential order. A request can succeed even if
-  // a statement fails. The [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status] field in the
-  // response provides information about the statement that failed. Clients must
-  // inspect this field to determine whether an error occurred.
+  // a statement fails. The
+  // [ExecuteBatchDmlResponse.status][google.spanner.v1.ExecuteBatchDmlResponse.status]
+  // field in the response provides information about the statement that failed.
+  // Clients must inspect this field to determine whether an error occurred.
   //
   // Execution stops after the first failed statement; the remaining statements
   // are not executed.
-  rpc ExecuteBatchDml(ExecuteBatchDmlRequest) returns (ExecuteBatchDmlResponse) {
+  rpc ExecuteBatchDml(ExecuteBatchDmlRequest)
+      returns (ExecuteBatchDmlResponse) {
     option (google.api.http) = {
       post: "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:executeBatchDml"
       body: "*"
@@ -170,14 +176,15 @@ service Spanner {
 
   // Reads rows from the database using key lookups and scans, as a
   // simple key/value style alternative to
-  // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].  This method cannot be used to
-  // return a result set larger than 10 MiB; if the read matches more
+  // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].  This method cannot be
+  // used to return a result set larger than 10 MiB; if the read matches more
   // data than that, the read fails with a `FAILED_PRECONDITION`
   // error.
   //
   // Reads inside read-write transactions might return `ABORTED`. If
   // this occurs, the application should restart the transaction from
-  // the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
+  // the beginning. See [Transaction][google.spanner.v1.Transaction] for more
+  // details.
   //
   // Larger result sets can be yielded in streaming fashion by calling
   // [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.
@@ -188,9 +195,9 @@ service Spanner {
     };
   }
 
-  // Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a
-  // stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no limit on the
-  // size of the returned result set. However, no individual row in
+  // Like [Read][google.spanner.v1.Spanner.Read], except returns the result set
+  // as a stream. Unlike [Read][google.spanner.v1.Spanner.Read], there is no
+  // limit on the size of the returned result set. However, no individual row in
   // the result set can exceed 100 MiB, and no column value can exceed
   // 10 MiB.
   rpc StreamingRead(ReadRequest) returns (stream PartialResultSet) {
@@ -201,7 +208,8 @@ service Spanner {
   }
 
   // Begins a new transaction. This step can often be skipped:
-  // [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
+  // [Read][google.spanner.v1.Spanner.Read],
+  // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
   // [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a
   // side-effect.
   rpc BeginTransaction(BeginTransactionRequest) returns (Transaction) {
@@ -232,13 +240,15 @@ service Spanner {
       body: "*"
     };
     option (google.api.method_signature) = "session,transaction_id,mutations";
-    option (google.api.method_signature) = "session,single_use_transaction,mutations";
+    option (google.api.method_signature) =
+        "session,single_use_transaction,mutations";
   }
 
   // Rolls back a transaction, releasing any locks it holds. It is a good
   // idea to call this for any transaction that includes one or more
-  // [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and
-  // ultimately decides not to commit.
+  // [Read][google.spanner.v1.Spanner.Read] or
+  // [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] requests and ultimately
+  // decides not to commit.
   //
   // `Rollback` returns `OK` if it successfully aborts the transaction, the
   // transaction was already aborted, or the transaction is not
@@ -253,10 +263,11 @@ service Spanner {
 
   // Creates a set of partition tokens that can be used to execute a query
   // operation in parallel.  Each of the returned partition tokens can be used
-  // by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to specify a subset
-  // of the query result to read.  The same session and read-only transaction
-  // must be used by the PartitionQueryRequest used to create the
-  // partition tokens and the ExecuteSqlRequests that use the partition tokens.
+  // by [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] to
+  // specify a subset of the query result to read.  The same session and
+  // read-only transaction must be used by the PartitionQueryRequest used to
+  // create the partition tokens and the ExecuteSqlRequests that use the
+  // partition tokens.
   //
   // Partition tokens become invalid when the session used to create them
   // is deleted, is idle for too long, begins a new transaction, or becomes too
@@ -271,12 +282,13 @@ service Spanner {
 
   // Creates a set of partition tokens that can be used to execute a read
   // operation in parallel.  Each of the returned partition tokens can be used
-  // by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a subset of the read
-  // result to read.  The same session and read-only transaction must be used by
-  // the PartitionReadRequest used to create the partition tokens and the
-  // ReadRequests that use the partition tokens.  There are no ordering
-  // guarantees on rows returned among the returned partition tokens, or even
-  // within each individual StreamingRead call issued with a partition_token.
+  // by [StreamingRead][google.spanner.v1.Spanner.StreamingRead] to specify a
+  // subset of the read result to read.  The same session and read-only
+  // transaction must be used by the PartitionReadRequest used to create the
+  // partition tokens and the ReadRequests that use the partition tokens.  There
+  // are no ordering guarantees on rows returned among the returned partition
+  // tokens, or even within each individual StreamingRead call issued with a
+  // partition_token.
   //
   // Partition tokens become invalid when the session used to create them
   // is deleted, is idle for too long, begins a new transaction, or becomes too
@@ -288,6 +300,29 @@ service Spanner {
       body: "*"
     };
   }
+
+  // Batches the supplied mutation groups in a collection of efficient
+  // transactions. All mutations in a group are committed atomically. However,
+  // mutations across groups can be committed non-atomically in an unspecified
+  // order and thus, they must be independent of each other. Partial failure is
+  // possible, i.e., some groups may have been committed successfully, while
+  // some may have failed. The results of individual batches are streamed into
+  // the response as the batches are applied.
+  //
+  // BatchWrite requests are not replay protected, meaning that each mutation
+  // group may be applied more than once. Replays of non-idempotent mutations
+  // may have undesirable effects. For example, replays of an insert mutation
+  // may produce an already exists error or if you use generated or commit
+  // timestamp-based keys, it may result in additional rows being added to the
+  // mutation's table. We recommend structuring your mutation groups to be
+  // idempotent to avoid this issue.
+  rpc BatchWrite(BatchWriteRequest) returns (stream BatchWriteResponse) {
+    option (google.api.http) = {
+      post: "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:batchWrite"
+      body: "*"
+    };
+    option (google.api.method_signature) = "session,mutation_groups";
+  }
 }
 
 // The request for [CreateSession][google.spanner.v1.Spanner.CreateSession].
@@ -304,7 +339,8 @@ message CreateSessionRequest {
   Session session = 2 [(google.api.field_behavior) = REQUIRED];
 }
 
-// The request for [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
+// The request for
+// [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
 message BatchCreateSessionsRequest {
   // Required. The database in which the new sessions are created.
   string database = 1 [
@@ -321,11 +357,13 @@ message BatchCreateSessionsRequest {
   // The API may return fewer than the requested number of sessions. If a
   // specific number of sessions are desired, the client can make additional
   // calls to BatchCreateSessions (adjusting
-  // [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count] as necessary).
+  // [session_count][google.spanner.v1.BatchCreateSessionsRequest.session_count]
+  // as necessary).
   int32 session_count = 3 [(google.api.field_behavior) = REQUIRED];
 }
 
-// The response for [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
+// The response for
+// [BatchCreateSessions][google.spanner.v1.Spanner.BatchCreateSessions].
 message BatchCreateSessionsResponse {
   // The freshly created sessions.
   repeated Session session = 1;
@@ -353,11 +391,13 @@ message Session {
   map<string, string> labels = 2;
 
   // Output only. The timestamp when the session is created.
-  google.protobuf.Timestamp create_time = 3 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp create_time = 3
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The approximate timestamp when the session is last used. It is
   // typically earlier than the actual last use time.
-  google.protobuf.Timestamp approximate_last_use_time = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp approximate_last_use_time = 4
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The database role which created this session.
   string creator_role = 5;
@@ -368,9 +408,7 @@ message GetSessionRequest {
   // Required. The name of the session to retrieve.
   string name = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 }
 
@@ -389,7 +427,8 @@ message ListSessionsRequest {
   int32 page_size = 2;
 
   // If non-empty, `page_token` should contain a
-  // [next_page_token][google.spanner.v1.ListSessionsResponse.next_page_token] from a previous
+  // [next_page_token][google.spanner.v1.ListSessionsResponse.next_page_token]
+  // from a previous
   // [ListSessionsResponse][google.spanner.v1.ListSessionsResponse].
   string page_token = 3;
 
@@ -412,8 +451,8 @@ message ListSessionsResponse {
   repeated Session sessions = 1;
 
   // `next_page_token` can be sent in a subsequent
-  // [ListSessions][google.spanner.v1.Spanner.ListSessions] call to fetch more of the matching
-  // sessions.
+  // [ListSessions][google.spanner.v1.Spanner.ListSessions] call to fetch more
+  // of the matching sessions.
   string next_page_token = 2;
 }
 
@@ -422,9 +461,7 @@ message DeleteSessionRequest {
   // Required. The name of the session to delete.
   string name = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 }
 
@@ -489,6 +526,86 @@ message RequestOptions {
   string transaction_tag = 3;
 }
 
+// The DirectedReadOptions can be used to indicate which replicas or regions
+// should be used for non-transactional reads or queries.
+//
+// DirectedReadOptions may only be specified for a read-only transaction,
+// otherwise the API will return an `INVALID_ARGUMENT` error.
+message DirectedReadOptions {
+  // The directed read replica selector.
+  // Callers must provide one or more of the following fields for replica
+  // selection:
+  //
+  //   * `location` - The location must be one of the regions within the
+  //      multi-region configuration of your database.
+  //   * `type` - The type of the replica.
+  //
+  // Some examples of using replica_selectors are:
+  //
+  //   * `location:us-east1` --> The "us-east1" replica(s) of any available type
+  //                             will be used to process the request.
+  //   * `type:READ_ONLY`    --> The "READ_ONLY" type replica(s) in nearest
+  // .                            available location will be used to process the
+  //                             request.
+  //   * `location:us-east1 type:READ_ONLY` --> The "READ_ONLY" type replica(s)
+  //                          in location "us-east1" will be used to process
+  //                          the request.
+  message ReplicaSelection {
+    // Indicates the type of replica.
+    enum Type {
+      // Not specified.
+      TYPE_UNSPECIFIED = 0;
+
+      // Read-write replicas support both reads and writes.
+      READ_WRITE = 1;
+
+      // Read-only replicas only support reads (not writes).
+      READ_ONLY = 2;
+    }
+
+    // The location or region of the serving requests, e.g. "us-east1".
+    string location = 1;
+
+    // The type of replica.
+    Type type = 2;
+  }
+
+  // An IncludeReplicas contains a repeated set of ReplicaSelection which
+  // indicates the order in which replicas should be considered.
+  message IncludeReplicas {
+    // The directed read replica selector.
+    repeated ReplicaSelection replica_selections = 1;
+
+    // If true, Spanner will not route requests to a replica outside the
+    // include_replicas list when all of the specified replicas are unavailable
+    // or unhealthy. Default value is `false`.
+    bool auto_failover_disabled = 2;
+  }
+
+  // An ExcludeReplicas contains a repeated set of ReplicaSelection that should
+  // be excluded from serving requests.
+  message ExcludeReplicas {
+    // The directed read replica selector.
+    repeated ReplicaSelection replica_selections = 1;
+  }
+
+  // Required. Replicas indicates the order in which replicas should be
+  // considered. At most one of either include_replicas or exclude_replicas
+  // should be present in the message.
+  oneof replicas {
+    // Include_replicas indicates the order of replicas (as they appear in
+    // this list) to process the request. If auto_failover_disabled is set to
+    // true and all replicas are exhausted without finding a healthy replica,
+    // Spanner will wait for a replica in the list to become available, requests
+    // may fail due to `DEADLINE_EXCEEDED` errors.
+    IncludeReplicas include_replicas = 1;
+
+    // Exclude_replicas indicates that should be excluded from serving
+    // requests. Spanner will not route requests to the replicas in this list.
+    ExcludeReplicas exclude_replicas = 2;
+  }
+}
+
 // The request for [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
 // [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].
 message ExecuteSqlRequest {
@@ -562,9 +679,7 @@ message ExecuteSqlRequest {
   // Required. The session in which the SQL query should be performed.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // The transaction to use.
@@ -599,7 +714,8 @@ message ExecuteSqlRequest {
 
   // It is not always possible for Cloud Spanner to infer the right SQL type
   // from a JSON value.  For example, values of type `BYTES` and values
-  // of type `STRING` both appear in [params][google.spanner.v1.ExecuteSqlRequest.params] as JSON strings.
+  // of type `STRING` both appear in
+  // [params][google.spanner.v1.ExecuteSqlRequest.params] as JSON strings.
   //
   // In these cases, `param_types` can be used to specify the exact
   // SQL type for some or all of the SQL statement parameters. See the
@@ -609,15 +725,18 @@ message ExecuteSqlRequest {
 
   // If this request is resuming a previously interrupted SQL statement
   // execution, `resume_token` should be copied from the last
-  // [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the interruption. Doing this
-  // enables the new SQL statement execution to resume where the last one left
-  // off. The rest of the request parameters must exactly match the
-  // request that yielded this token.
+  // [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the
+  // interruption. Doing this enables the new SQL statement execution to resume
+  // where the last one left off. The rest of the request parameters must
+  // exactly match the request that yielded this token.
   bytes resume_token = 6;
 
   // Used to control the amount of debugging information returned in
-  // [ResultSetStats][google.spanner.v1.ResultSetStats]. If [partition_token][google.spanner.v1.ExecuteSqlRequest.partition_token] is set, [query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode] can only
-  // be set to [QueryMode.NORMAL][google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL].
+  // [ResultSetStats][google.spanner.v1.ResultSetStats]. If
+  // [partition_token][google.spanner.v1.ExecuteSqlRequest.partition_token] is
+  // set, [query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode] can only
+  // be set to
+  // [QueryMode.NORMAL][google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL].
   QueryMode query_mode = 7;
 
   // If present, results will be restricted to the specified partition
@@ -644,11 +763,14 @@ message ExecuteSqlRequest {
   // Common options for this request.
   RequestOptions request_options = 11;
 
+  // Directed read options for this request.
+  DirectedReadOptions directed_read_options = 15;
+
   // If this is for a partitioned query and this field is set to `true`, the
-  // request will be executed via Spanner independent compute resources.
+  // request is executed with Spanner Data Boost independent compute resources.
   //
   // If the field is set to `true` but the request does not set
-  // `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+  // `partition_token`, the API returns an `INVALID_ARGUMENT` error.
   bool data_boost_enabled = 16;
 }
 
@@ -675,7 +797,9 @@ message ExecuteBatchDmlRequest {
 
     // It is not always possible for Cloud Spanner to infer the right SQL type
     // from a JSON value.  For example, values of type `BYTES` and values
-    // of type `STRING` both appear in [params][google.spanner.v1.ExecuteBatchDmlRequest.Statement.params] as JSON strings.
+    // of type `STRING` both appear in
+    // [params][google.spanner.v1.ExecuteBatchDmlRequest.Statement.params] as
+    // JSON strings.
     //
     // In these cases, `param_types` can be used to specify the exact
     // SQL type for some or all of the SQL statement parameters. See the
@@ -687,9 +811,7 @@ message ExecuteBatchDmlRequest {
   // Required. The session in which the DML statements should be performed.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Required. The transaction to use. Must be a read-write transaction.
@@ -699,17 +821,17 @@ message ExecuteBatchDmlRequest {
   // transaction.
   TransactionSelector transaction = 2 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. The list of statements to execute in this batch. Statements are executed
-  // serially, such that the effects of statement `i` are visible to statement
-  // `i+1`. Each statement must be a DML statement. Execution stops at the
-  // first failed statement; the remaining statements are not executed.
+  // Required. The list of statements to execute in this batch. Statements are
+  // executed serially, such that the effects of statement `i` are visible to
+  // statement `i+1`. Each statement must be a DML statement. Execution stops at
+  // the first failed statement; the remaining statements are not executed.
   //
   // Callers must provide at least one statement.
   repeated Statement statements = 3 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. A per-transaction sequence number used to identify this request. This field
-  // makes each request idempotent such that if the request is received multiple
-  // times, at most one will succeed.
+  // Required. A per-transaction sequence number used to identify this request.
+  // This field makes each request idempotent such that if the request is
+  // received multiple times, at most one will succeed.
   //
   // The sequence number must be monotonically increasing within the
   // transaction. If a request arrives for the first time with an out-of-order
@@ -721,38 +843,47 @@ message ExecuteBatchDmlRequest {
   RequestOptions request_options = 5;
 }
 
-// The response for [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml]. Contains a list
-// of [ResultSet][google.spanner.v1.ResultSet] messages, one for each DML statement that has successfully
-// executed, in the same order as the statements in the request. If a statement
-// fails, the status in the response body identifies the cause of the failure.
+// The response for
+// [ExecuteBatchDml][google.spanner.v1.Spanner.ExecuteBatchDml]. Contains a list
+// of [ResultSet][google.spanner.v1.ResultSet] messages, one for each DML
+// statement that has successfully executed, in the same order as the statements
+// in the request. If a statement fails, the status in the response body
+// identifies the cause of the failure.
 //
 // To check for DML statements that failed, use the following approach:
 //
-// 1. Check the status in the response message. The [google.rpc.Code][google.rpc.Code] enum
+// 1. Check the status in the response message. The
+// [google.rpc.Code][google.rpc.Code] enum
 //    value `OK` indicates that all statements were executed successfully.
 // 2. If the status was not `OK`, check the number of result sets in the
-//    response. If the response contains `N` [ResultSet][google.spanner.v1.ResultSet] messages, then
-//    statement `N+1` in the request failed.
+//    response. If the response contains `N`
+//    [ResultSet][google.spanner.v1.ResultSet] messages, then statement `N+1` in
+//    the request failed.
 //
 // Example 1:
 //
 // * Request: 5 DML statements, all executed successfully.
-// * Response: 5 [ResultSet][google.spanner.v1.ResultSet] messages, with the status `OK`.
+// * Response: 5 [ResultSet][google.spanner.v1.ResultSet] messages, with the
+// status `OK`.
 //
 // Example 2:
 //
 // * Request: 5 DML statements. The third statement has a syntax error.
-// * Response: 2 [ResultSet][google.spanner.v1.ResultSet] messages, and a syntax error (`INVALID_ARGUMENT`)
-//   status. The number of [ResultSet][google.spanner.v1.ResultSet] messages indicates that the third
-//   statement failed, and the fourth and fifth statements were not executed.
+// * Response: 2 [ResultSet][google.spanner.v1.ResultSet] messages, and a syntax
+// error (`INVALID_ARGUMENT`)
+//   status. The number of [ResultSet][google.spanner.v1.ResultSet] messages
+//   indicates that the third statement failed, and the fourth and fifth
+//   statements were not executed.
 message ExecuteBatchDmlResponse {
-  // One [ResultSet][google.spanner.v1.ResultSet] for each statement in the request that ran successfully,
-  // in the same order as the statements in the request. Each [ResultSet][google.spanner.v1.ResultSet] does
-  // not contain any rows. The [ResultSetStats][google.spanner.v1.ResultSetStats] in each [ResultSet][google.spanner.v1.ResultSet] contain
-  // the number of rows modified by the statement.
+  // One [ResultSet][google.spanner.v1.ResultSet] for each statement in the
+  // request that ran successfully, in the same order as the statements in the
+  // request. Each [ResultSet][google.spanner.v1.ResultSet] does not contain any
+  // rows. The [ResultSetStats][google.spanner.v1.ResultSetStats] in each
+  // [ResultSet][google.spanner.v1.ResultSet] contain the number of rows
+  // modified by the statement.
   //
-  // Only the first [ResultSet][google.spanner.v1.ResultSet] in the response contains valid
-  // [ResultSetMetadata][google.spanner.v1.ResultSetMetadata].
+  // Only the first [ResultSet][google.spanner.v1.ResultSet] in the response
+  // contains valid [ResultSetMetadata][google.spanner.v1.ResultSetMetadata].
   repeated ResultSet result_sets = 1;
 
   // If all DML statements are executed successfully, the status is `OK`.
@@ -787,24 +918,23 @@ message PartitionQueryRequest {
   // Required. The session used to create the partitions.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Read only snapshot transactions are supported, read/write and single use
   // transactions are not.
   TransactionSelector transaction = 2;
 
-  // Required. The query request to generate partitions for. The request will fail if
-  // the query is not root partitionable. The query plan of a root
-  // partitionable query has a single distributed union operator. A distributed
-  // union operator conceptually divides one or more tables into multiple
-  // splits, remotely evaluates a subquery independently on each split, and
-  // then unions all results.
+  // Required. The query request to generate partitions for. The request will
+  // fail if the query is not root partitionable. For a query to be root
+  // partitionable, it needs to satisfy a few conditions. For example, the first
+  // operator in the query execution plan must be a distributed union operator.
+  // For more information about other conditions, see [Read data in
+  // parallel](https://cloud.google.com/spanner/docs/reads#read_data_in_parallel).
   //
-  // This must not contain DML commands, such as INSERT, UPDATE, or
-  // DELETE. Use [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] with a
+  // The query request must not contain DML commands, such as INSERT, UPDATE, or
+  // DELETE. Use
+  // [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] with a
   // PartitionedDml transaction for large, partition-friendly DML operations.
   string sql = 3 [(google.api.field_behavior) = REQUIRED];
 
@@ -824,7 +954,8 @@ message PartitionQueryRequest {
 
   // It is not always possible for Cloud Spanner to infer the right SQL type
   // from a JSON value.  For example, values of type `BYTES` and values
-  // of type `STRING` both appear in [params][google.spanner.v1.PartitionQueryRequest.params] as JSON strings.
+  // of type `STRING` both appear in
+  // [params][google.spanner.v1.PartitionQueryRequest.params] as JSON strings.
   //
   // In these cases, `param_types` can be used to specify the exact
   // SQL type for some or all of the SQL query parameters. See the
@@ -841,9 +972,7 @@ message PartitionReadRequest {
   // Required. The session used to create the partitions.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Read only snapshot transactions are supported, read/write and single use
@@ -853,18 +982,24 @@ message PartitionReadRequest {
   // Required. The name of the table in the database to be read.
   string table = 3 [(google.api.field_behavior) = REQUIRED];
 
-  // If non-empty, the name of an index on [table][google.spanner.v1.PartitionReadRequest.table]. This index is
-  // used instead of the table primary key when interpreting [key_set][google.spanner.v1.PartitionReadRequest.key_set]
-  // and sorting result rows. See [key_set][google.spanner.v1.PartitionReadRequest.key_set] for further information.
+  // If non-empty, the name of an index on
+  // [table][google.spanner.v1.PartitionReadRequest.table]. This index is used
+  // instead of the table primary key when interpreting
+  // [key_set][google.spanner.v1.PartitionReadRequest.key_set] and sorting
+  // result rows. See [key_set][google.spanner.v1.PartitionReadRequest.key_set]
+  // for further information.
   string index = 4;
 
-  // The columns of [table][google.spanner.v1.PartitionReadRequest.table] to be returned for each row matching
-  // this request.
+  // The columns of [table][google.spanner.v1.PartitionReadRequest.table] to be
+  // returned for each row matching this request.
   repeated string columns = 5;
 
   // Required. `key_set` identifies the rows to be yielded. `key_set` names the
-  // primary keys of the rows in [table][google.spanner.v1.PartitionReadRequest.table] to be yielded, unless [index][google.spanner.v1.PartitionReadRequest.index]
-  // is present. If [index][google.spanner.v1.PartitionReadRequest.index] is present, then [key_set][google.spanner.v1.PartitionReadRequest.key_set] instead names
+  // primary keys of the rows in
+  // [table][google.spanner.v1.PartitionReadRequest.table] to be yielded, unless
+  // [index][google.spanner.v1.PartitionReadRequest.index] is present. If
+  // [index][google.spanner.v1.PartitionReadRequest.index] is present, then
+  // [key_set][google.spanner.v1.PartitionReadRequest.key_set] instead names
   // index keys in [index][google.spanner.v1.PartitionReadRequest.index].
   //
   // It is not an error for the `key_set` to name rows that do not
@@ -900,9 +1035,7 @@ message ReadRequest {
   // Required. The session in which the read should be performed.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // The transaction to use. If none is provided, the default is a
@@ -912,24 +1045,31 @@ message ReadRequest {
   // Required. The name of the table in the database to be read.
   string table = 3 [(google.api.field_behavior) = REQUIRED];
 
-  // If non-empty, the name of an index on [table][google.spanner.v1.ReadRequest.table]. This index is
-  // used instead of the table primary key when interpreting [key_set][google.spanner.v1.ReadRequest.key_set]
-  // and sorting result rows. See [key_set][google.spanner.v1.ReadRequest.key_set] for further information.
+  // If non-empty, the name of an index on
+  // [table][google.spanner.v1.ReadRequest.table]. This index is used instead of
+  // the table primary key when interpreting
+  // [key_set][google.spanner.v1.ReadRequest.key_set] and sorting result rows.
+  // See [key_set][google.spanner.v1.ReadRequest.key_set] for further
+  // information.
   string index = 4;
 
-  // Required. The columns of [table][google.spanner.v1.ReadRequest.table] to be returned for each row matching
-  // this request.
+  // Required. The columns of [table][google.spanner.v1.ReadRequest.table] to be
+  // returned for each row matching this request.
   repeated string columns = 5 [(google.api.field_behavior) = REQUIRED];
 
   // Required. `key_set` identifies the rows to be yielded. `key_set` names the
-  // primary keys of the rows in [table][google.spanner.v1.ReadRequest.table] to be yielded, unless [index][google.spanner.v1.ReadRequest.index]
-  // is present. If [index][google.spanner.v1.ReadRequest.index] is present, then [key_set][google.spanner.v1.ReadRequest.key_set] instead names
-  // index keys in [index][google.spanner.v1.ReadRequest.index].
+  // primary keys of the rows in [table][google.spanner.v1.ReadRequest.table] to
+  // be yielded, unless [index][google.spanner.v1.ReadRequest.index] is present.
+  // If [index][google.spanner.v1.ReadRequest.index] is present, then
+  // [key_set][google.spanner.v1.ReadRequest.key_set] instead names index keys
+  // in [index][google.spanner.v1.ReadRequest.index].
   //
-  // If the [partition_token][google.spanner.v1.ReadRequest.partition_token] field is empty, rows are yielded
-  // in table primary key order (if [index][google.spanner.v1.ReadRequest.index] is empty) or index key order
-  // (if [index][google.spanner.v1.ReadRequest.index] is non-empty).  If the [partition_token][google.spanner.v1.ReadRequest.partition_token] field is not
-  // empty, rows will be yielded in an unspecified order.
+  // If the [partition_token][google.spanner.v1.ReadRequest.partition_token]
+  // field is empty, rows are yielded in table primary key order (if
+  // [index][google.spanner.v1.ReadRequest.index] is empty) or index key order
+  // (if [index][google.spanner.v1.ReadRequest.index] is non-empty).  If the
+  // [partition_token][google.spanner.v1.ReadRequest.partition_token] field is
+  // not empty, rows will be yielded in an unspecified order.
   //
   // It is not an error for the `key_set` to name rows that do not
   // exist in the database. Read yields nothing for nonexistent rows.
@@ -942,9 +1082,9 @@ message ReadRequest {
 
   // If this request is resuming a previously interrupted read,
   // `resume_token` should be copied from the last
-  // [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the interruption. Doing this
-  // enables the new read to resume where the last read left off. The
-  // rest of the request parameters must exactly match the request
+  // [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the
+  // interruption. Doing this enables the new read to resume where the last read
+  // left off. The rest of the request parameters must exactly match the request
   // that yielded this token.
   bytes resume_token = 9;
 
@@ -957,22 +1097,24 @@ message ReadRequest {
   // Common options for this request.
   RequestOptions request_options = 11;
 
+  // Directed read options for this request.
+  DirectedReadOptions directed_read_options = 14;
+
   // If this is for a partitioned read and this field is set to `true`, the
-  // request will be executed via Spanner independent compute resources.
+  // request is executed with Spanner Data Boost independent compute resources.
   //
   // If the field is set to `true` but the request does not set
-  // `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+  // `partition_token`, the API returns an `INVALID_ARGUMENT` error.
   bool data_boost_enabled = 15;
 }
 
-// The request for [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
+// The request for
+// [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
 message BeginTransactionRequest {
   // Required. The session in which the transaction runs.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Required. Options for the new transaction.
@@ -991,9 +1133,7 @@ message CommitRequest {
   // Required. The session in which the transaction to be committed is running.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Required. The transaction in which to commit.
@@ -1019,8 +1159,8 @@ message CommitRequest {
   repeated Mutation mutations = 4;
 
   // If `true`, then statistics related to the transaction will be included in
-  // the [CommitResponse][google.spanner.v1.CommitResponse.commit_stats]. Default value is
-  // `false`.
+  // the [CommitResponse][google.spanner.v1.CommitResponse.commit_stats].
+  // Default value is `false`.
   bool return_commit_stats = 5;
 
   // Common options for this request.
@@ -1032,11 +1172,47 @@ message RollbackRequest {
   // Required. The session in which the transaction to roll back is running.
   string session = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "spanner.googleapis.com/Session"
-    }
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
   ];
 
   // Required. The transaction to roll back.
   bytes transaction_id = 2 [(google.api.field_behavior) = REQUIRED];
 }
+
+// The request for [BatchWrite][google.spanner.v1.Spanner.BatchWrite].
+message BatchWriteRequest {
+  // A group of mutations to be committed together. Related mutations should be
+  // placed in a group. For example, two mutations inserting rows with the same
+  // primary key prefix in both parent and child tables are related.
+  message MutationGroup {
+    // Required. The mutations in this group.
+    repeated Mutation mutations = 1 [(google.api.field_behavior) = REQUIRED];
+  }
+
+  // Required. The session in which the batch request is to be run.
+  string session = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "spanner.googleapis.com/Session" }
+  ];
+
+  // Common options for this request.
+  RequestOptions request_options = 3;
+
+  // Required. The groups of mutations to be applied.
+  repeated MutationGroup mutation_groups = 4
+      [(google.api.field_behavior) = REQUIRED];
+}
+
+// The result of applying a batch of mutations.
+message BatchWriteResponse {
+  // The mutation groups applied in this batch. The values index into the
+  // `mutation_groups` field in the corresponding `BatchWriteRequest`.
+  repeated int32 indexes = 1;
+
+  // An `OK` status indicates success. Any other status indicates a failure.
+  google.rpc.Status status = 2;
+
+  // The commit timestamp of the transaction that applied this batch.
+  // Present if `status` is `OK`, absent otherwise.
+  google.protobuf.Timestamp commit_timestamp = 3;
+}
diff --git a/protos/google/spanner/v1/type.proto b/protos/google/spanner/v1/type.proto
index 290b5540d..412cfa126 100644
--- a/protos/google/spanner/v1/type.proto
+++ b/protos/google/spanner/v1/type.proto
@@ -1,4 +1,4 @@
-// Copyright 2022 Google LLC
+// Copyright 2023 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -171,4 +171,9 @@ enum TypeAnnotationCode {
   // [JSON][google.spanner.v1.TypeCode.JSON] when a client interacts with PostgreSQL-enabled
   // Spanner databases.
   PG_JSONB = 3;
+
+  // PostgreSQL compatible OID type. This annotation can be used by a client
+  // interacting with PostgreSQL-enabled Spanner database to specify that a
+  // value should be treated using the semantics of the OID type.
+  PG_OID = 4;
 }
diff --git a/protos/protos.d.ts b/protos/protos.d.ts
index 98af6928c..99ec6fff4 100644
--- a/protos/protos.d.ts
+++ b/protos/protos.d.ts
@@ -760,6 +760,15 @@ export namespace google {
 
             /** ExtensionRangeOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
+
+            /** ExtensionRangeOptions declaration */
+            declaration?: (google.protobuf.ExtensionRangeOptions.IDeclaration[]|null);
+
+            /** ExtensionRangeOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
+            /** ExtensionRangeOptions verification */
+            verification?: (google.protobuf.ExtensionRangeOptions.VerificationState|keyof typeof google.protobuf.ExtensionRangeOptions.VerificationState|null);
         }
 
         /** Represents an ExtensionRangeOptions. */
@@ -774,6 +783,15 @@ export namespace google {
             /** ExtensionRangeOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
+            /** ExtensionRangeOptions declaration. */
+            public declaration: google.protobuf.ExtensionRangeOptions.IDeclaration[];
+
+            /** ExtensionRangeOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
+            /** ExtensionRangeOptions verification. */
+            public verification: (google.protobuf.ExtensionRangeOptions.VerificationState|keyof typeof google.protobuf.ExtensionRangeOptions.VerificationState);
+
             /**
              * Creates a new ExtensionRangeOptions instance using the specified properties.
              * @param [properties] Properties to set
@@ -852,6 +870,136 @@ export namespace google {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        namespace ExtensionRangeOptions {
+
+            /** Properties of a Declaration. */
+            interface IDeclaration {
+
+                /** Declaration number */
+                number?: (number|null);
+
+                /** Declaration fullName */
+                fullName?: (string|null);
+
+                /** Declaration type */
+                type?: (string|null);
+
+                /** Declaration reserved */
+                reserved?: (boolean|null);
+
+                /** Declaration repeated */
+                repeated?: (boolean|null);
+            }
+
+            /** Represents a Declaration. */
+            class Declaration implements IDeclaration {
+
+                /**
+                 * Constructs a new Declaration.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.protobuf.ExtensionRangeOptions.IDeclaration);
+
+                /** Declaration number. */
+                public number: number;
+
+                /** Declaration fullName. */
+                public fullName: string;
+
+                /** Declaration type. */
+                public type: string;
+
+                /** Declaration reserved. */
+                public reserved: boolean;
+
+                /** Declaration repeated. */
+                public repeated: boolean;
+
+                /**
+                 * Creates a new Declaration instance using the specified properties.
+                 * @param [properties] Properties to set
+                 * @returns Declaration instance
+                 */
+                public static create(properties?: google.protobuf.ExtensionRangeOptions.IDeclaration): google.protobuf.ExtensionRangeOptions.Declaration;
+
+                /**
+                 * Encodes the specified Declaration message. Does not implicitly {@link google.protobuf.ExtensionRangeOptions.Declaration.verify|verify} messages.
+                 * @param message Declaration message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encode(message: google.protobuf.ExtensionRangeOptions.IDeclaration, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Encodes the specified Declaration message, length delimited. Does not implicitly {@link google.protobuf.ExtensionRangeOptions.Declaration.verify|verify} messages.
+                 * @param message Declaration message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encodeDelimited(message: google.protobuf.ExtensionRangeOptions.IDeclaration, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Decodes a Declaration message from the specified reader or buffer.
+                 * @param reader Reader or buffer to decode from
+                 * @param [length] Message length if known beforehand
+                 * @returns Declaration
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.protobuf.ExtensionRangeOptions.Declaration;
+
+                /**
+                 * Decodes a Declaration message from the specified reader or buffer, length delimited.
+                 * @param reader Reader or buffer to decode from
+                 * @returns Declaration
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.protobuf.ExtensionRangeOptions.Declaration;
+
+                /**
+                 * Verifies a Declaration message.
+                 * @param message Plain object to verify
+                 * @returns `null` if valid, otherwise the reason why it is not
+                 */
+                public static verify(message: { [k: string]: any }): (string|null);
+
+                /**
+                 * Creates a Declaration message from a plain object. Also converts values to their respective internal types.
+                 * @param object Plain object
+                 * @returns Declaration
+                 */
+                public static fromObject(object: { [k: string]: any }): google.protobuf.ExtensionRangeOptions.Declaration;
+
+                /**
+                 * Creates a plain object from a Declaration message. Also converts values to other types if specified.
+                 * @param message Declaration
+                 * @param [options] Conversion options
+                 * @returns Plain object
+                 */
+                public static toObject(message: google.protobuf.ExtensionRangeOptions.Declaration, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                /**
+                 * Converts this Declaration to JSON.
+                 * @returns JSON object
+                 */
+                public toJSON(): { [k: string]: any };
+
+                /**
+                 * Gets the default type url for Declaration
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
+            /** VerificationState enum. */
+            enum VerificationState {
+                DECLARATION = 0,
+                UNVERIFIED = 1
+            }
+        }
+
         /** Properties of a FieldDescriptorProto. */
         interface IFieldDescriptorProto {
 
@@ -1779,6 +1927,9 @@ export namespace google {
             /** FileOptions rubyPackage */
             rubyPackage?: (string|null);
 
+            /** FileOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** FileOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
 
@@ -1855,6 +2006,9 @@ export namespace google {
             /** FileOptions rubyPackage. */
             public rubyPackage: string;
 
+            /** FileOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** FileOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -1964,6 +2118,9 @@ export namespace google {
             /** MessageOptions deprecatedLegacyJsonFieldConflicts */
             deprecatedLegacyJsonFieldConflicts?: (boolean|null);
 
+            /** MessageOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** MessageOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
 
@@ -1995,6 +2152,9 @@ export namespace google {
             /** MessageOptions deprecatedLegacyJsonFieldConflicts. */
             public deprecatedLegacyJsonFieldConflicts: boolean;
 
+            /** MessageOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** MessageOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -2106,8 +2266,14 @@ export namespace google {
             /** FieldOptions retention */
             retention?: (google.protobuf.FieldOptions.OptionRetention|keyof typeof google.protobuf.FieldOptions.OptionRetention|null);
 
-            /** FieldOptions target */
-            target?: (google.protobuf.FieldOptions.OptionTargetType|keyof typeof google.protobuf.FieldOptions.OptionTargetType|null);
+            /** FieldOptions targets */
+            targets?: (google.protobuf.FieldOptions.OptionTargetType[]|null);
+
+            /** FieldOptions editionDefaults */
+            editionDefaults?: (google.protobuf.FieldOptions.IEditionDefault[]|null);
+
+            /** FieldOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
 
             /** FieldOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
@@ -2155,8 +2321,14 @@ export namespace google {
             /** FieldOptions retention. */
             public retention: (google.protobuf.FieldOptions.OptionRetention|keyof typeof google.protobuf.FieldOptions.OptionRetention);
 
-            /** FieldOptions target. */
-            public target: (google.protobuf.FieldOptions.OptionTargetType|keyof typeof google.protobuf.FieldOptions.OptionTargetType);
+            /** FieldOptions targets. */
+            public targets: google.protobuf.FieldOptions.OptionTargetType[];
+
+            /** FieldOptions editionDefaults. */
+            public editionDefaults: google.protobuf.FieldOptions.IEditionDefault[];
+
+            /** FieldOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
 
             /** FieldOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
@@ -2275,11 +2447,117 @@ export namespace google {
                 TARGET_TYPE_SERVICE = 8,
                 TARGET_TYPE_METHOD = 9
             }
+
+            /** Properties of an EditionDefault. */
+            interface IEditionDefault {
+
+                /** EditionDefault edition */
+                edition?: (string|null);
+
+                /** EditionDefault value */
+                value?: (string|null);
+            }
+
+            /** Represents an EditionDefault. */
+            class EditionDefault implements IEditionDefault {
+
+                /**
+                 * Constructs a new EditionDefault.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.protobuf.FieldOptions.IEditionDefault);
+
+                /** EditionDefault edition. */
+                public edition: string;
+
+                /** EditionDefault value. */
+                public value: string;
+
+                /**
+                 * Creates a new EditionDefault instance using the specified properties.
+                 * @param [properties] Properties to set
+                 * @returns EditionDefault instance
+                 */
+                public static create(properties?: google.protobuf.FieldOptions.IEditionDefault): google.protobuf.FieldOptions.EditionDefault;
+
+                /**
+                 * Encodes the specified EditionDefault message. Does not implicitly {@link google.protobuf.FieldOptions.EditionDefault.verify|verify} messages.
+                 * @param message EditionDefault message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encode(message: google.protobuf.FieldOptions.IEditionDefault, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Encodes the specified EditionDefault message, length delimited. Does not implicitly {@link google.protobuf.FieldOptions.EditionDefault.verify|verify} messages.
+                 * @param message EditionDefault message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encodeDelimited(message: google.protobuf.FieldOptions.IEditionDefault, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Decodes an EditionDefault message from the specified reader or buffer.
+                 * @param reader Reader or buffer to decode from
+                 * @param [length] Message length if known beforehand
+                 * @returns EditionDefault
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.protobuf.FieldOptions.EditionDefault;
+
+                /**
+                 * Decodes an EditionDefault message from the specified reader or buffer, length delimited.
+                 * @param reader Reader or buffer to decode from
+                 * @returns EditionDefault
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.protobuf.FieldOptions.EditionDefault;
+
+                /**
+                 * Verifies an EditionDefault message.
+                 * @param message Plain object to verify
+                 * @returns `null` if valid, otherwise the reason why it is not
+                 */
+                public static verify(message: { [k: string]: any }): (string|null);
+
+                /**
+                 * Creates an EditionDefault message from a plain object. Also converts values to their respective internal types.
+                 * @param object Plain object
+                 * @returns EditionDefault
+                 */
+                public static fromObject(object: { [k: string]: any }): google.protobuf.FieldOptions.EditionDefault;
+
+                /**
+                 * Creates a plain object from an EditionDefault message. Also converts values to other types if specified.
+                 * @param message EditionDefault
+                 * @param [options] Conversion options
+                 * @returns Plain object
+                 */
+                public static toObject(message: google.protobuf.FieldOptions.EditionDefault, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                /**
+                 * Converts this EditionDefault to JSON.
+                 * @returns JSON object
+                 */
+                public toJSON(): { [k: string]: any };
+
+                /**
+                 * Gets the default type url for EditionDefault
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
         }
 
         /** Properties of an OneofOptions. */
         interface IOneofOptions {
 
+            /** OneofOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** OneofOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
         }
@@ -2293,6 +2571,9 @@ export namespace google {
              */
             constructor(properties?: google.protobuf.IOneofOptions);
 
+            /** OneofOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** OneofOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -2386,6 +2667,9 @@ export namespace google {
             /** EnumOptions deprecatedLegacyJsonFieldConflicts */
             deprecatedLegacyJsonFieldConflicts?: (boolean|null);
 
+            /** EnumOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** EnumOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
         }
@@ -2408,6 +2692,9 @@ export namespace google {
             /** EnumOptions deprecatedLegacyJsonFieldConflicts. */
             public deprecatedLegacyJsonFieldConflicts: boolean;
 
+            /** EnumOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** EnumOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -2495,6 +2782,12 @@ export namespace google {
             /** EnumValueOptions deprecated */
             deprecated?: (boolean|null);
 
+            /** EnumValueOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
+            /** EnumValueOptions debugRedact */
+            debugRedact?: (boolean|null);
+
             /** EnumValueOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
         }
@@ -2511,6 +2804,12 @@ export namespace google {
             /** EnumValueOptions deprecated. */
             public deprecated: boolean;
 
+            /** EnumValueOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
+            /** EnumValueOptions debugRedact. */
+            public debugRedact: boolean;
+
             /** EnumValueOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -2595,6 +2894,9 @@ export namespace google {
         /** Properties of a ServiceOptions. */
         interface IServiceOptions {
 
+            /** ServiceOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** ServiceOptions deprecated */
             deprecated?: (boolean|null);
 
@@ -2617,6 +2919,9 @@ export namespace google {
              */
             constructor(properties?: google.protobuf.IServiceOptions);
 
+            /** ServiceOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** ServiceOptions deprecated. */
             public deprecated: boolean;
 
@@ -2710,6 +3015,9 @@ export namespace google {
             /** MethodOptions idempotencyLevel */
             idempotencyLevel?: (google.protobuf.MethodOptions.IdempotencyLevel|keyof typeof google.protobuf.MethodOptions.IdempotencyLevel|null);
 
+            /** MethodOptions features */
+            features?: (google.protobuf.IFeatureSet|null);
+
             /** MethodOptions uninterpretedOption */
             uninterpretedOption?: (google.protobuf.IUninterpretedOption[]|null);
 
@@ -2738,6 +3046,9 @@ export namespace google {
             /** MethodOptions idempotencyLevel. */
             public idempotencyLevel: (google.protobuf.MethodOptions.IdempotencyLevel|keyof typeof google.protobuf.MethodOptions.IdempotencyLevel);
 
+            /** MethodOptions features. */
+            public features?: (google.protobuf.IFeatureSet|null);
+
             /** MethodOptions uninterpretedOption. */
             public uninterpretedOption: google.protobuf.IUninterpretedOption[];
 
@@ -3068,141 +3379,321 @@ export namespace google {
             }
         }
 
-        /** Properties of a SourceCodeInfo. */
-        interface ISourceCodeInfo {
+        /** Properties of a FeatureSet. */
+        interface IFeatureSet {
 
-            /** SourceCodeInfo location */
-            location?: (google.protobuf.SourceCodeInfo.ILocation[]|null);
+            /** FeatureSet fieldPresence */
+            fieldPresence?: (google.protobuf.FeatureSet.FieldPresence|keyof typeof google.protobuf.FeatureSet.FieldPresence|null);
+
+            /** FeatureSet enumType */
+            enumType?: (google.protobuf.FeatureSet.EnumType|keyof typeof google.protobuf.FeatureSet.EnumType|null);
+
+            /** FeatureSet repeatedFieldEncoding */
+            repeatedFieldEncoding?: (google.protobuf.FeatureSet.RepeatedFieldEncoding|keyof typeof google.protobuf.FeatureSet.RepeatedFieldEncoding|null);
+
+            /** FeatureSet stringFieldValidation */
+            stringFieldValidation?: (google.protobuf.FeatureSet.StringFieldValidation|keyof typeof google.protobuf.FeatureSet.StringFieldValidation|null);
+
+            /** FeatureSet messageEncoding */
+            messageEncoding?: (google.protobuf.FeatureSet.MessageEncoding|keyof typeof google.protobuf.FeatureSet.MessageEncoding|null);
+
+            /** FeatureSet jsonFormat */
+            jsonFormat?: (google.protobuf.FeatureSet.JsonFormat|keyof typeof google.protobuf.FeatureSet.JsonFormat|null);
+
+            /** FeatureSet rawFeatures */
+            rawFeatures?: (google.protobuf.IFeatureSet|null);
         }
 
-        /** Represents a SourceCodeInfo. */
-        class SourceCodeInfo implements ISourceCodeInfo {
+        /** Represents a FeatureSet. */
+        class FeatureSet implements IFeatureSet {
 
             /**
-             * Constructs a new SourceCodeInfo.
+             * Constructs a new FeatureSet.
              * @param [properties] Properties to set
              */
-            constructor(properties?: google.protobuf.ISourceCodeInfo);
+            constructor(properties?: google.protobuf.IFeatureSet);
 
-            /** SourceCodeInfo location. */
-            public location: google.protobuf.SourceCodeInfo.ILocation[];
+            /** FeatureSet fieldPresence. */
+            public fieldPresence: (google.protobuf.FeatureSet.FieldPresence|keyof typeof google.protobuf.FeatureSet.FieldPresence);
+
+            /** FeatureSet enumType. */
+            public enumType: (google.protobuf.FeatureSet.EnumType|keyof typeof google.protobuf.FeatureSet.EnumType);
+
+            /** FeatureSet repeatedFieldEncoding. */
+            public repeatedFieldEncoding: (google.protobuf.FeatureSet.RepeatedFieldEncoding|keyof typeof google.protobuf.FeatureSet.RepeatedFieldEncoding);
+
+            /** FeatureSet stringFieldValidation. */
+            public stringFieldValidation: (google.protobuf.FeatureSet.StringFieldValidation|keyof typeof google.protobuf.FeatureSet.StringFieldValidation);
+
+            /** FeatureSet messageEncoding. */
+            public messageEncoding: (google.protobuf.FeatureSet.MessageEncoding|keyof typeof google.protobuf.FeatureSet.MessageEncoding);
+
+            /** FeatureSet jsonFormat. */
+            public jsonFormat: (google.protobuf.FeatureSet.JsonFormat|keyof typeof google.protobuf.FeatureSet.JsonFormat);
+
+            /** FeatureSet rawFeatures. */
+            public rawFeatures?: (google.protobuf.IFeatureSet|null);
 
             /**
-             * Creates a new SourceCodeInfo instance using the specified properties.
+             * Creates a new FeatureSet instance using the specified properties.
              * @param [properties] Properties to set
-             * @returns SourceCodeInfo instance
+             * @returns FeatureSet instance
              */
-            public static create(properties?: google.protobuf.ISourceCodeInfo): google.protobuf.SourceCodeInfo;
+            public static create(properties?: google.protobuf.IFeatureSet): google.protobuf.FeatureSet;
 
             /**
-             * Encodes the specified SourceCodeInfo message. Does not implicitly {@link google.protobuf.SourceCodeInfo.verify|verify} messages.
-             * @param message SourceCodeInfo message or plain object to encode
+             * Encodes the specified FeatureSet message. Does not implicitly {@link google.protobuf.FeatureSet.verify|verify} messages.
+             * @param message FeatureSet message or plain object to encode
              * @param [writer] Writer to encode to
              * @returns Writer
              */
-            public static encode(message: google.protobuf.ISourceCodeInfo, writer?: $protobuf.Writer): $protobuf.Writer;
+            public static encode(message: google.protobuf.IFeatureSet, writer?: $protobuf.Writer): $protobuf.Writer;
 
             /**
-             * Encodes the specified SourceCodeInfo message, length delimited. Does not implicitly {@link google.protobuf.SourceCodeInfo.verify|verify} messages.
-             * @param message SourceCodeInfo message or plain object to encode
+             * Encodes the specified FeatureSet message, length delimited. Does not implicitly {@link google.protobuf.FeatureSet.verify|verify} messages.
+             * @param message FeatureSet message or plain object to encode
              * @param [writer] Writer to encode to
              * @returns Writer
              */
-            public static encodeDelimited(message: google.protobuf.ISourceCodeInfo, writer?: $protobuf.Writer): $protobuf.Writer;
+            public static encodeDelimited(message: google.protobuf.IFeatureSet, writer?: $protobuf.Writer): $protobuf.Writer;
 
             /**
-             * Decodes a SourceCodeInfo message from the specified reader or buffer.
+             * Decodes a FeatureSet message from the specified reader or buffer.
              * @param reader Reader or buffer to decode from
              * @param [length] Message length if known beforehand
-             * @returns SourceCodeInfo
+             * @returns FeatureSet
              * @throws {Error} If the payload is not a reader or valid buffer
              * @throws {$protobuf.util.ProtocolError} If required fields are missing
              */
-            public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.protobuf.SourceCodeInfo;
+            public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.protobuf.FeatureSet;
 
             /**
-             * Decodes a SourceCodeInfo message from the specified reader or buffer, length delimited.
+             * Decodes a FeatureSet message from the specified reader or buffer, length delimited.
              * @param reader Reader or buffer to decode from
-             * @returns SourceCodeInfo
+             * @returns FeatureSet
              * @throws {Error} If the payload is not a reader or valid buffer
              * @throws {$protobuf.util.ProtocolError} If required fields are missing
              */
-            public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.protobuf.SourceCodeInfo;
+            public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.protobuf.FeatureSet;
 
             /**
-             * Verifies a SourceCodeInfo message.
+             * Verifies a FeatureSet message.
              * @param message Plain object to verify
              * @returns `null` if valid, otherwise the reason why it is not
              */
             public static verify(message: { [k: string]: any }): (string|null);
 
             /**
-             * Creates a SourceCodeInfo message from a plain object. Also converts values to their respective internal types.
+             * Creates a FeatureSet message from a plain object. Also converts values to their respective internal types.
              * @param object Plain object
-             * @returns SourceCodeInfo
+             * @returns FeatureSet
              */
-            public static fromObject(object: { [k: string]: any }): google.protobuf.SourceCodeInfo;
+            public static fromObject(object: { [k: string]: any }): google.protobuf.FeatureSet;
 
             /**
-             * Creates a plain object from a SourceCodeInfo message. Also converts values to other types if specified.
-             * @param message SourceCodeInfo
+             * Creates a plain object from a FeatureSet message. Also converts values to other types if specified.
+             * @param message FeatureSet
              * @param [options] Conversion options
              * @returns Plain object
              */
-            public static toObject(message: google.protobuf.SourceCodeInfo, options?: $protobuf.IConversionOptions): { [k: string]: any };
+            public static toObject(message: google.protobuf.FeatureSet, options?: $protobuf.IConversionOptions): { [k: string]: any };
 
             /**
-             * Converts this SourceCodeInfo to JSON.
+             * Converts this FeatureSet to JSON.
              * @returns JSON object
              */
             public toJSON(): { [k: string]: any };
 
             /**
-             * Gets the default type url for SourceCodeInfo
+             * Gets the default type url for FeatureSet
              * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
              * @returns The default type url
              */
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
-        namespace SourceCodeInfo {
-
-            /** Properties of a Location. */
-            interface ILocation {
+        namespace FeatureSet {
 
-                /** Location path */
-                path?: (number[]|null);
+            /** FieldPresence enum. */
+            enum FieldPresence {
+                FIELD_PRESENCE_UNKNOWN = 0,
+                EXPLICIT = 1,
+                IMPLICIT = 2,
+                LEGACY_REQUIRED = 3
+            }
 
-                /** Location span */
-                span?: (number[]|null);
+            /** EnumType enum. */
+            enum EnumType {
+                ENUM_TYPE_UNKNOWN = 0,
+                OPEN = 1,
+                CLOSED = 2
+            }
 
-                /** Location leadingComments */
-                leadingComments?: (string|null);
+            /** RepeatedFieldEncoding enum. */
+            enum RepeatedFieldEncoding {
+                REPEATED_FIELD_ENCODING_UNKNOWN = 0,
+                PACKED = 1,
+                EXPANDED = 2
+            }
 
-                /** Location trailingComments */
-                trailingComments?: (string|null);
+            /** StringFieldValidation enum. */
+            enum StringFieldValidation {
+                STRING_FIELD_VALIDATION_UNKNOWN = 0,
+                MANDATORY = 1,
+                HINT = 2,
+                NONE = 3
+            }
 
-                /** Location leadingDetachedComments */
-                leadingDetachedComments?: (string[]|null);
+            /** MessageEncoding enum. */
+            enum MessageEncoding {
+                MESSAGE_ENCODING_UNKNOWN = 0,
+                LENGTH_PREFIXED = 1,
+                DELIMITED = 2
             }
 
-            /** Represents a Location. */
-            class Location implements ILocation {
+            /** JsonFormat enum. */
+            enum JsonFormat {
+                JSON_FORMAT_UNKNOWN = 0,
+                ALLOW = 1,
+                LEGACY_BEST_EFFORT = 2
+            }
+        }
 
-                /**
-                 * Constructs a new Location.
-                 * @param [properties] Properties to set
-                 */
-                constructor(properties?: google.protobuf.SourceCodeInfo.ILocation);
+        /** Properties of a SourceCodeInfo. */
+        interface ISourceCodeInfo {
 
-                /** Location path. */
-                public path: number[];
+            /** SourceCodeInfo location */
+            location?: (google.protobuf.SourceCodeInfo.ILocation[]|null);
+        }
 
-                /** Location span. */
-                public span: number[];
+        /** Represents a SourceCodeInfo. */
+        class SourceCodeInfo implements ISourceCodeInfo {
 
-                /** Location leadingComments. */
-                public leadingComments: string;
+            /**
+             * Constructs a new SourceCodeInfo.
+             * @param [properties] Properties to set
+             */
+            constructor(properties?: google.protobuf.ISourceCodeInfo);
+
+            /** SourceCodeInfo location. */
+            public location: google.protobuf.SourceCodeInfo.ILocation[];
+
+            /**
+             * Creates a new SourceCodeInfo instance using the specified properties.
+             * @param [properties] Properties to set
+             * @returns SourceCodeInfo instance
+             */
+            public static create(properties?: google.protobuf.ISourceCodeInfo): google.protobuf.SourceCodeInfo;
+
+            /**
+             * Encodes the specified SourceCodeInfo message. Does not implicitly {@link google.protobuf.SourceCodeInfo.verify|verify} messages.
+             * @param message SourceCodeInfo message or plain object to encode
+             * @param [writer] Writer to encode to
+             * @returns Writer
+             */
+            public static encode(message: google.protobuf.ISourceCodeInfo, writer?: $protobuf.Writer): $protobuf.Writer;
+
+            /**
+             * Encodes the specified SourceCodeInfo message, length delimited. Does not implicitly {@link google.protobuf.SourceCodeInfo.verify|verify} messages.
+             * @param message SourceCodeInfo message or plain object to encode
+             * @param [writer] Writer to encode to
+             * @returns Writer
+             */
+            public static encodeDelimited(message: google.protobuf.ISourceCodeInfo, writer?: $protobuf.Writer): $protobuf.Writer;
+
+            /**
+             * Decodes a SourceCodeInfo message from the specified reader or buffer.
+             * @param reader Reader or buffer to decode from
+             * @param [length] Message length if known beforehand
+             * @returns SourceCodeInfo
+             * @throws {Error} If the payload is not a reader or valid buffer
+             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+             */
+            public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.protobuf.SourceCodeInfo;
+
+            /**
+             * Decodes a SourceCodeInfo message from the specified reader or buffer, length delimited.
+             * @param reader Reader or buffer to decode from
+             * @returns SourceCodeInfo
+             * @throws {Error} If the payload is not a reader or valid buffer
+             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+             */
+            public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.protobuf.SourceCodeInfo;
+
+            /**
+             * Verifies a SourceCodeInfo message.
+             * @param message Plain object to verify
+             * @returns `null` if valid, otherwise the reason why it is not
+             */
+            public static verify(message: { [k: string]: any }): (string|null);
+
+            /**
+             * Creates a SourceCodeInfo message from a plain object. Also converts values to their respective internal types.
+             * @param object Plain object
+             * @returns SourceCodeInfo
+             */
+            public static fromObject(object: { [k: string]: any }): google.protobuf.SourceCodeInfo;
+
+            /**
+             * Creates a plain object from a SourceCodeInfo message. Also converts values to other types if specified.
+             * @param message SourceCodeInfo
+             * @param [options] Conversion options
+             * @returns Plain object
+             */
+            public static toObject(message: google.protobuf.SourceCodeInfo, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+            /**
+             * Converts this SourceCodeInfo to JSON.
+             * @returns JSON object
+             */
+            public toJSON(): { [k: string]: any };
+
+            /**
+             * Gets the default type url for SourceCodeInfo
+             * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+             * @returns The default type url
+             */
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
+        namespace SourceCodeInfo {
+
+            /** Properties of a Location. */
+            interface ILocation {
+
+                /** Location path */
+                path?: (number[]|null);
+
+                /** Location span */
+                span?: (number[]|null);
+
+                /** Location leadingComments */
+                leadingComments?: (string|null);
+
+                /** Location trailingComments */
+                trailingComments?: (string|null);
+
+                /** Location leadingDetachedComments */
+                leadingDetachedComments?: (string[]|null);
+            }
+
+            /** Represents a Location. */
+            class Location implements ILocation {
+
+                /**
+                 * Constructs a new Location.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.protobuf.SourceCodeInfo.ILocation);
+
+                /** Location path. */
+                public path: number[];
+
+                /** Location span. */
+                public span: number[];
+
+                /** Location leadingComments. */
+                public leadingComments: string;
 
                 /** Location trailingComments. */
                 public trailingComments: string;
@@ -11690,6 +12181,336 @@ export namespace google {
                         }
                     }
 
+                    /** Properties of an AutoscalingConfig. */
+                    interface IAutoscalingConfig {
+
+                        /** AutoscalingConfig autoscalingLimits */
+                        autoscalingLimits?: (google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits|null);
+
+                        /** AutoscalingConfig autoscalingTargets */
+                        autoscalingTargets?: (google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets|null);
+                    }
+
+                    /** Represents an AutoscalingConfig. */
+                    class AutoscalingConfig implements IAutoscalingConfig {
+
+                        /**
+                         * Constructs a new AutoscalingConfig.
+                         * @param [properties] Properties to set
+                         */
+                        constructor(properties?: google.spanner.admin.instance.v1.IAutoscalingConfig);
+
+                        /** AutoscalingConfig autoscalingLimits. */
+                        public autoscalingLimits?: (google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits|null);
+
+                        /** AutoscalingConfig autoscalingTargets. */
+                        public autoscalingTargets?: (google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets|null);
+
+                        /**
+                         * Creates a new AutoscalingConfig instance using the specified properties.
+                         * @param [properties] Properties to set
+                         * @returns AutoscalingConfig instance
+                         */
+                        public static create(properties?: google.spanner.admin.instance.v1.IAutoscalingConfig): google.spanner.admin.instance.v1.AutoscalingConfig;
+
+                        /**
+                         * Encodes the specified AutoscalingConfig message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.verify|verify} messages.
+                         * @param message AutoscalingConfig message or plain object to encode
+                         * @param [writer] Writer to encode to
+                         * @returns Writer
+                         */
+                        public static encode(message: google.spanner.admin.instance.v1.IAutoscalingConfig, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                        /**
+                         * Encodes the specified AutoscalingConfig message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.verify|verify} messages.
+                         * @param message AutoscalingConfig message or plain object to encode
+                         * @param [writer] Writer to encode to
+                         * @returns Writer
+                         */
+                        public static encodeDelimited(message: google.spanner.admin.instance.v1.IAutoscalingConfig, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                        /**
+                         * Decodes an AutoscalingConfig message from the specified reader or buffer.
+                         * @param reader Reader or buffer to decode from
+                         * @param [length] Message length if known beforehand
+                         * @returns AutoscalingConfig
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.admin.instance.v1.AutoscalingConfig;
+
+                        /**
+                         * Decodes an AutoscalingConfig message from the specified reader or buffer, length delimited.
+                         * @param reader Reader or buffer to decode from
+                         * @returns AutoscalingConfig
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.admin.instance.v1.AutoscalingConfig;
+
+                        /**
+                         * Verifies an AutoscalingConfig message.
+                         * @param message Plain object to verify
+                         * @returns `null` if valid, otherwise the reason why it is not
+                         */
+                        public static verify(message: { [k: string]: any }): (string|null);
+
+                        /**
+                         * Creates an AutoscalingConfig message from a plain object. Also converts values to their respective internal types.
+                         * @param object Plain object
+                         * @returns AutoscalingConfig
+                         */
+                        public static fromObject(object: { [k: string]: any }): google.spanner.admin.instance.v1.AutoscalingConfig;
+
+                        /**
+                         * Creates a plain object from an AutoscalingConfig message. Also converts values to other types if specified.
+                         * @param message AutoscalingConfig
+                         * @param [options] Conversion options
+                         * @returns Plain object
+                         */
+                        public static toObject(message: google.spanner.admin.instance.v1.AutoscalingConfig, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                        /**
+                         * Converts this AutoscalingConfig to JSON.
+                         * @returns JSON object
+                         */
+                        public toJSON(): { [k: string]: any };
+
+                        /**
+                         * Gets the default type url for AutoscalingConfig
+                         * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                         * @returns The default type url
+                         */
+                        public static getTypeUrl(typeUrlPrefix?: string): string;
+                    }
+
+                    namespace AutoscalingConfig {
+
+                        /** Properties of an AutoscalingLimits. */
+                        interface IAutoscalingLimits {
+
+                            /** AutoscalingLimits minNodes */
+                            minNodes?: (number|null);
+
+                            /** AutoscalingLimits minProcessingUnits */
+                            minProcessingUnits?: (number|null);
+
+                            /** AutoscalingLimits maxNodes */
+                            maxNodes?: (number|null);
+
+                            /** AutoscalingLimits maxProcessingUnits */
+                            maxProcessingUnits?: (number|null);
+                        }
+
+                        /** Represents an AutoscalingLimits. */
+                        class AutoscalingLimits implements IAutoscalingLimits {
+
+                            /**
+                             * Constructs a new AutoscalingLimits.
+                             * @param [properties] Properties to set
+                             */
+                            constructor(properties?: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits);
+
+                            /** AutoscalingLimits minNodes. */
+                            public minNodes?: (number|null);
+
+                            /** AutoscalingLimits minProcessingUnits. */
+                            public minProcessingUnits?: (number|null);
+
+                            /** AutoscalingLimits maxNodes. */
+                            public maxNodes?: (number|null);
+
+                            /** AutoscalingLimits maxProcessingUnits. */
+                            public maxProcessingUnits?: (number|null);
+
+                            /** AutoscalingLimits minLimit. */
+                            public minLimit?: ("minNodes"|"minProcessingUnits");
+
+                            /** AutoscalingLimits maxLimit. */
+                            public maxLimit?: ("maxNodes"|"maxProcessingUnits");
+
+                            /**
+                             * Creates a new AutoscalingLimits instance using the specified properties.
+                             * @param [properties] Properties to set
+                             * @returns AutoscalingLimits instance
+                             */
+                            public static create(properties?: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits;
+
+                            /**
+                             * Encodes the specified AutoscalingLimits message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.verify|verify} messages.
+                             * @param message AutoscalingLimits message or plain object to encode
+                             * @param [writer] Writer to encode to
+                             * @returns Writer
+                             */
+                            public static encode(message: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                            /**
+                             * Encodes the specified AutoscalingLimits message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.verify|verify} messages.
+                             * @param message AutoscalingLimits message or plain object to encode
+                             * @param [writer] Writer to encode to
+                             * @returns Writer
+                             */
+                            public static encodeDelimited(message: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                            /**
+                             * Decodes an AutoscalingLimits message from the specified reader or buffer.
+                             * @param reader Reader or buffer to decode from
+                             * @param [length] Message length if known beforehand
+                             * @returns AutoscalingLimits
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits;
+
+                            /**
+                             * Decodes an AutoscalingLimits message from the specified reader or buffer, length delimited.
+                             * @param reader Reader or buffer to decode from
+                             * @returns AutoscalingLimits
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits;
+
+                            /**
+                             * Verifies an AutoscalingLimits message.
+                             * @param message Plain object to verify
+                             * @returns `null` if valid, otherwise the reason why it is not
+                             */
+                            public static verify(message: { [k: string]: any }): (string|null);
+
+                            /**
+                             * Creates an AutoscalingLimits message from a plain object. Also converts values to their respective internal types.
+                             * @param object Plain object
+                             * @returns AutoscalingLimits
+                             */
+                            public static fromObject(object: { [k: string]: any }): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits;
+
+                            /**
+                             * Creates a plain object from an AutoscalingLimits message. Also converts values to other types if specified.
+                             * @param message AutoscalingLimits
+                             * @param [options] Conversion options
+                             * @returns Plain object
+                             */
+                            public static toObject(message: google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                            /**
+                             * Converts this AutoscalingLimits to JSON.
+                             * @returns JSON object
+                             */
+                            public toJSON(): { [k: string]: any };
+
+                            /**
+                             * Gets the default type url for AutoscalingLimits
+                             * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                             * @returns The default type url
+                             */
+                            public static getTypeUrl(typeUrlPrefix?: string): string;
+                        }
+
+                        /** Properties of an AutoscalingTargets. */
+                        interface IAutoscalingTargets {
+
+                            /** AutoscalingTargets highPriorityCpuUtilizationPercent */
+                            highPriorityCpuUtilizationPercent?: (number|null);
+
+                            /** AutoscalingTargets storageUtilizationPercent */
+                            storageUtilizationPercent?: (number|null);
+                        }
+
+                        /** Represents an AutoscalingTargets. */
+                        class AutoscalingTargets implements IAutoscalingTargets {
+
+                            /**
+                             * Constructs a new AutoscalingTargets.
+                             * @param [properties] Properties to set
+                             */
+                            constructor(properties?: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets);
+
+                            /** AutoscalingTargets highPriorityCpuUtilizationPercent. */
+                            public highPriorityCpuUtilizationPercent: number;
+
+                            /** AutoscalingTargets storageUtilizationPercent. */
+                            public storageUtilizationPercent: number;
+
+                            /**
+                             * Creates a new AutoscalingTargets instance using the specified properties.
+                             * @param [properties] Properties to set
+                             * @returns AutoscalingTargets instance
+                             */
+                            public static create(properties?: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets;
+
+                            /**
+                             * Encodes the specified AutoscalingTargets message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.verify|verify} messages.
+                             * @param message AutoscalingTargets message or plain object to encode
+                             * @param [writer] Writer to encode to
+                             * @returns Writer
+                             */
+                            public static encode(message: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                            /**
+                             * Encodes the specified AutoscalingTargets message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.verify|verify} messages.
+                             * @param message AutoscalingTargets message or plain object to encode
+                             * @param [writer] Writer to encode to
+                             * @returns Writer
+                             */
+                            public static encodeDelimited(message: google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                            /**
+                             * Decodes an AutoscalingTargets message from the specified reader or buffer.
+                             * @param reader Reader or buffer to decode from
+                             * @param [length] Message length if known beforehand
+                             * @returns AutoscalingTargets
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets;
+
+                            /**
+                             * Decodes an AutoscalingTargets message from the specified reader or buffer, length delimited.
+                             * @param reader Reader or buffer to decode from
+                             * @returns AutoscalingTargets
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets;
+
+                            /**
+                             * Verifies an AutoscalingTargets message.
+                             * @param message Plain object to verify
+                             * @returns `null` if valid, otherwise the reason why it is not
+                             */
+                            public static verify(message: { [k: string]: any }): (string|null);
+
+                            /**
+                             * Creates an AutoscalingTargets message from a plain object. Also converts values to their respective internal types.
+                             * @param object Plain object
+                             * @returns AutoscalingTargets
+                             */
+                            public static fromObject(object: { [k: string]: any }): google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets;
+
+                            /**
+                             * Creates a plain object from an AutoscalingTargets message. Also converts values to other types if specified.
+                             * @param message AutoscalingTargets
+                             * @param [options] Conversion options
+                             * @returns Plain object
+                             */
+                            public static toObject(message: google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                            /**
+                             * Converts this AutoscalingTargets to JSON.
+                             * @returns JSON object
+                             */
+                            public toJSON(): { [k: string]: any };
+
+                            /**
+                             * Gets the default type url for AutoscalingTargets
+                             * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                             * @returns The default type url
+                             */
+                            public static getTypeUrl(typeUrlPrefix?: string): string;
+                        }
+                    }
+
                     /** Properties of an Instance. */
                     interface IInstance {
 
@@ -11708,6 +12529,9 @@ export namespace google {
                         /** Instance processingUnits */
                         processingUnits?: (number|null);
 
+                        /** Instance autoscalingConfig */
+                        autoscalingConfig?: (google.spanner.admin.instance.v1.IAutoscalingConfig|null);
+
                         /** Instance state */
                         state?: (google.spanner.admin.instance.v1.Instance.State|keyof typeof google.spanner.admin.instance.v1.Instance.State|null);
 
@@ -11748,6 +12572,9 @@ export namespace google {
                         /** Instance processingUnits. */
                         public processingUnits: number;
 
+                        /** Instance autoscalingConfig. */
+                        public autoscalingConfig?: (google.spanner.admin.instance.v1.IAutoscalingConfig|null);
+
                         /** Instance state. */
                         public state: (google.spanner.admin.instance.v1.Instance.State|keyof typeof google.spanner.admin.instance.v1.Instance.State);
 
@@ -16472,7 +17299,8 @@ export namespace google {
             enum TypeAnnotationCode {
                 TYPE_ANNOTATION_CODE_UNSPECIFIED = 0,
                 PG_NUMERIC = 2,
-                PG_JSONB = 3
+                PG_JSONB = 3,
+                PG_OID = 4
             }
 
             /** Represents a Spanner */
@@ -16704,6 +17532,20 @@ export namespace google {
                  * @returns Promise
                  */
                 public partitionRead(request: google.spanner.v1.IPartitionReadRequest): Promise<google.spanner.v1.PartitionResponse>;
+
+                /**
+                 * Calls BatchWrite.
+                 * @param request BatchWriteRequest message or plain object
+                 * @param callback Node-style callback called with the error, if any, and BatchWriteResponse
+                 */
+                public batchWrite(request: google.spanner.v1.IBatchWriteRequest, callback: google.spanner.v1.Spanner.BatchWriteCallback): void;
+
+                /**
+                 * Calls BatchWrite.
+                 * @param request BatchWriteRequest message or plain object
+                 * @returns Promise
+                 */
+                public batchWrite(request: google.spanner.v1.IBatchWriteRequest): Promise<google.spanner.v1.BatchWriteResponse>;
             }
 
             namespace Spanner {
@@ -16812,6 +17654,13 @@ export namespace google {
                  * @param [response] PartitionResponse
                  */
                 type PartitionReadCallback = (error: (Error|null), response?: google.spanner.v1.PartitionResponse) => void;
+
+                /**
+                 * Callback as used by {@link google.spanner.v1.Spanner|batchWrite}.
+                 * @param error Error, if any
+                 * @param [response] BatchWriteResponse
+                 */
+                type BatchWriteCallback = (error: (Error|null), response?: google.spanner.v1.BatchWriteResponse) => void;
             }
 
             /** Properties of a CreateSessionRequest. */
@@ -17757,22 +18606,444 @@ export namespace google {
                  */
                 public toJSON(): { [k: string]: any };
 
-                /**
-                 * Gets the default type url for RequestOptions
-                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
-                 * @returns The default type url
-                 */
-                public static getTypeUrl(typeUrlPrefix?: string): string;
-            }
+                /**
+                 * Gets the default type url for RequestOptions
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
+            namespace RequestOptions {
+
+                /** Priority enum. */
+                enum Priority {
+                    PRIORITY_UNSPECIFIED = 0,
+                    PRIORITY_LOW = 1,
+                    PRIORITY_MEDIUM = 2,
+                    PRIORITY_HIGH = 3
+                }
+            }
+
+            /** Properties of a DirectedReadOptions. */
+            interface IDirectedReadOptions {
+
+                /** DirectedReadOptions includeReplicas */
+                includeReplicas?: (google.spanner.v1.DirectedReadOptions.IIncludeReplicas|null);
+
+                /** DirectedReadOptions excludeReplicas */
+                excludeReplicas?: (google.spanner.v1.DirectedReadOptions.IExcludeReplicas|null);
+            }
+
+            /** Represents a DirectedReadOptions. */
+            class DirectedReadOptions implements IDirectedReadOptions {
+
+                /**
+                 * Constructs a new DirectedReadOptions.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.spanner.v1.IDirectedReadOptions);
+
+                /** DirectedReadOptions includeReplicas. */
+                public includeReplicas?: (google.spanner.v1.DirectedReadOptions.IIncludeReplicas|null);
+
+                /** DirectedReadOptions excludeReplicas. */
+                public excludeReplicas?: (google.spanner.v1.DirectedReadOptions.IExcludeReplicas|null);
+
+                /** DirectedReadOptions replicas. */
+                public replicas?: ("includeReplicas"|"excludeReplicas");
+
+                /**
+                 * Creates a new DirectedReadOptions instance using the specified properties.
+                 * @param [properties] Properties to set
+                 * @returns DirectedReadOptions instance
+                 */
+                public static create(properties?: google.spanner.v1.IDirectedReadOptions): google.spanner.v1.DirectedReadOptions;
+
+                /**
+                 * Encodes the specified DirectedReadOptions message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.verify|verify} messages.
+                 * @param message DirectedReadOptions message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encode(message: google.spanner.v1.IDirectedReadOptions, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Encodes the specified DirectedReadOptions message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.verify|verify} messages.
+                 * @param message DirectedReadOptions message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encodeDelimited(message: google.spanner.v1.IDirectedReadOptions, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Decodes a DirectedReadOptions message from the specified reader or buffer.
+                 * @param reader Reader or buffer to decode from
+                 * @param [length] Message length if known beforehand
+                 * @returns DirectedReadOptions
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.DirectedReadOptions;
+
+                /**
+                 * Decodes a DirectedReadOptions message from the specified reader or buffer, length delimited.
+                 * @param reader Reader or buffer to decode from
+                 * @returns DirectedReadOptions
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.DirectedReadOptions;
+
+                /**
+                 * Verifies a DirectedReadOptions message.
+                 * @param message Plain object to verify
+                 * @returns `null` if valid, otherwise the reason why it is not
+                 */
+                public static verify(message: { [k: string]: any }): (string|null);
+
+                /**
+                 * Creates a DirectedReadOptions message from a plain object. Also converts values to their respective internal types.
+                 * @param object Plain object
+                 * @returns DirectedReadOptions
+                 */
+                public static fromObject(object: { [k: string]: any }): google.spanner.v1.DirectedReadOptions;
+
+                /**
+                 * Creates a plain object from a DirectedReadOptions message. Also converts values to other types if specified.
+                 * @param message DirectedReadOptions
+                 * @param [options] Conversion options
+                 * @returns Plain object
+                 */
+                public static toObject(message: google.spanner.v1.DirectedReadOptions, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                /**
+                 * Converts this DirectedReadOptions to JSON.
+                 * @returns JSON object
+                 */
+                public toJSON(): { [k: string]: any };
+
+                /**
+                 * Gets the default type url for DirectedReadOptions
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
+            namespace DirectedReadOptions {
+
+                /** Properties of a ReplicaSelection. */
+                interface IReplicaSelection {
+
+                    /** ReplicaSelection location */
+                    location?: (string|null);
+
+                    /** ReplicaSelection type */
+                    type?: (google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type|keyof typeof google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type|null);
+                }
+
+                /** Represents a ReplicaSelection. */
+                class ReplicaSelection implements IReplicaSelection {
+
+                    /**
+                     * Constructs a new ReplicaSelection.
+                     * @param [properties] Properties to set
+                     */
+                    constructor(properties?: google.spanner.v1.DirectedReadOptions.IReplicaSelection);
+
+                    /** ReplicaSelection location. */
+                    public location: string;
+
+                    /** ReplicaSelection type. */
+                    public type: (google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type|keyof typeof google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type);
+
+                    /**
+                     * Creates a new ReplicaSelection instance using the specified properties.
+                     * @param [properties] Properties to set
+                     * @returns ReplicaSelection instance
+                     */
+                    public static create(properties?: google.spanner.v1.DirectedReadOptions.IReplicaSelection): google.spanner.v1.DirectedReadOptions.ReplicaSelection;
+
+                    /**
+                     * Encodes the specified ReplicaSelection message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify|verify} messages.
+                     * @param message ReplicaSelection message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encode(message: google.spanner.v1.DirectedReadOptions.IReplicaSelection, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Encodes the specified ReplicaSelection message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify|verify} messages.
+                     * @param message ReplicaSelection message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encodeDelimited(message: google.spanner.v1.DirectedReadOptions.IReplicaSelection, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Decodes a ReplicaSelection message from the specified reader or buffer.
+                     * @param reader Reader or buffer to decode from
+                     * @param [length] Message length if known beforehand
+                     * @returns ReplicaSelection
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.DirectedReadOptions.ReplicaSelection;
+
+                    /**
+                     * Decodes a ReplicaSelection message from the specified reader or buffer, length delimited.
+                     * @param reader Reader or buffer to decode from
+                     * @returns ReplicaSelection
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.DirectedReadOptions.ReplicaSelection;
+
+                    /**
+                     * Verifies a ReplicaSelection message.
+                     * @param message Plain object to verify
+                     * @returns `null` if valid, otherwise the reason why it is not
+                     */
+                    public static verify(message: { [k: string]: any }): (string|null);
+
+                    /**
+                     * Creates a ReplicaSelection message from a plain object. Also converts values to their respective internal types.
+                     * @param object Plain object
+                     * @returns ReplicaSelection
+                     */
+                    public static fromObject(object: { [k: string]: any }): google.spanner.v1.DirectedReadOptions.ReplicaSelection;
+
+                    /**
+                     * Creates a plain object from a ReplicaSelection message. Also converts values to other types if specified.
+                     * @param message ReplicaSelection
+                     * @param [options] Conversion options
+                     * @returns Plain object
+                     */
+                    public static toObject(message: google.spanner.v1.DirectedReadOptions.ReplicaSelection, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                    /**
+                     * Converts this ReplicaSelection to JSON.
+                     * @returns JSON object
+                     */
+                    public toJSON(): { [k: string]: any };
+
+                    /**
+                     * Gets the default type url for ReplicaSelection
+                     * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns The default type url
+                     */
+                    public static getTypeUrl(typeUrlPrefix?: string): string;
+                }
+
+                namespace ReplicaSelection {
+
+                    /** Type enum. */
+                    enum Type {
+                        TYPE_UNSPECIFIED = 0,
+                        READ_WRITE = 1,
+                        READ_ONLY = 2
+                    }
+                }
+
+                /** Properties of an IncludeReplicas. */
+                interface IIncludeReplicas {
+
+                    /** IncludeReplicas replicaSelections */
+                    replicaSelections?: (google.spanner.v1.DirectedReadOptions.IReplicaSelection[]|null);
+
+                    /** IncludeReplicas autoFailoverDisabled */
+                    autoFailoverDisabled?: (boolean|null);
+                }
+
+                /** Represents an IncludeReplicas. */
+                class IncludeReplicas implements IIncludeReplicas {
+
+                    /**
+                     * Constructs a new IncludeReplicas.
+                     * @param [properties] Properties to set
+                     */
+                    constructor(properties?: google.spanner.v1.DirectedReadOptions.IIncludeReplicas);
+
+                    /** IncludeReplicas replicaSelections. */
+                    public replicaSelections: google.spanner.v1.DirectedReadOptions.IReplicaSelection[];
+
+                    /** IncludeReplicas autoFailoverDisabled. */
+                    public autoFailoverDisabled: boolean;
+
+                    /**
+                     * Creates a new IncludeReplicas instance using the specified properties.
+                     * @param [properties] Properties to set
+                     * @returns IncludeReplicas instance
+                     */
+                    public static create(properties?: google.spanner.v1.DirectedReadOptions.IIncludeReplicas): google.spanner.v1.DirectedReadOptions.IncludeReplicas;
+
+                    /**
+                     * Encodes the specified IncludeReplicas message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.IncludeReplicas.verify|verify} messages.
+                     * @param message IncludeReplicas message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encode(message: google.spanner.v1.DirectedReadOptions.IIncludeReplicas, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Encodes the specified IncludeReplicas message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.IncludeReplicas.verify|verify} messages.
+                     * @param message IncludeReplicas message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encodeDelimited(message: google.spanner.v1.DirectedReadOptions.IIncludeReplicas, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Decodes an IncludeReplicas message from the specified reader or buffer.
+                     * @param reader Reader or buffer to decode from
+                     * @param [length] Message length if known beforehand
+                     * @returns IncludeReplicas
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.DirectedReadOptions.IncludeReplicas;
+
+                    /**
+                     * Decodes an IncludeReplicas message from the specified reader or buffer, length delimited.
+                     * @param reader Reader or buffer to decode from
+                     * @returns IncludeReplicas
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.DirectedReadOptions.IncludeReplicas;
+
+                    /**
+                     * Verifies an IncludeReplicas message.
+                     * @param message Plain object to verify
+                     * @returns `null` if valid, otherwise the reason why it is not
+                     */
+                    public static verify(message: { [k: string]: any }): (string|null);
+
+                    /**
+                     * Creates an IncludeReplicas message from a plain object. Also converts values to their respective internal types.
+                     * @param object Plain object
+                     * @returns IncludeReplicas
+                     */
+                    public static fromObject(object: { [k: string]: any }): google.spanner.v1.DirectedReadOptions.IncludeReplicas;
+
+                    /**
+                     * Creates a plain object from an IncludeReplicas message. Also converts values to other types if specified.
+                     * @param message IncludeReplicas
+                     * @param [options] Conversion options
+                     * @returns Plain object
+                     */
+                    public static toObject(message: google.spanner.v1.DirectedReadOptions.IncludeReplicas, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                    /**
+                     * Converts this IncludeReplicas to JSON.
+                     * @returns JSON object
+                     */
+                    public toJSON(): { [k: string]: any };
+
+                    /**
+                     * Gets the default type url for IncludeReplicas
+                     * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns The default type url
+                     */
+                    public static getTypeUrl(typeUrlPrefix?: string): string;
+                }
+
+                /** Properties of an ExcludeReplicas. */
+                interface IExcludeReplicas {
+
+                    /** ExcludeReplicas replicaSelections */
+                    replicaSelections?: (google.spanner.v1.DirectedReadOptions.IReplicaSelection[]|null);
+                }
+
+                /** Represents an ExcludeReplicas. */
+                class ExcludeReplicas implements IExcludeReplicas {
+
+                    /**
+                     * Constructs a new ExcludeReplicas.
+                     * @param [properties] Properties to set
+                     */
+                    constructor(properties?: google.spanner.v1.DirectedReadOptions.IExcludeReplicas);
+
+                    /** ExcludeReplicas replicaSelections. */
+                    public replicaSelections: google.spanner.v1.DirectedReadOptions.IReplicaSelection[];
+
+                    /**
+                     * Creates a new ExcludeReplicas instance using the specified properties.
+                     * @param [properties] Properties to set
+                     * @returns ExcludeReplicas instance
+                     */
+                    public static create(properties?: google.spanner.v1.DirectedReadOptions.IExcludeReplicas): google.spanner.v1.DirectedReadOptions.ExcludeReplicas;
+
+                    /**
+                     * Encodes the specified ExcludeReplicas message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ExcludeReplicas.verify|verify} messages.
+                     * @param message ExcludeReplicas message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encode(message: google.spanner.v1.DirectedReadOptions.IExcludeReplicas, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Encodes the specified ExcludeReplicas message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ExcludeReplicas.verify|verify} messages.
+                     * @param message ExcludeReplicas message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encodeDelimited(message: google.spanner.v1.DirectedReadOptions.IExcludeReplicas, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Decodes an ExcludeReplicas message from the specified reader or buffer.
+                     * @param reader Reader or buffer to decode from
+                     * @param [length] Message length if known beforehand
+                     * @returns ExcludeReplicas
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.DirectedReadOptions.ExcludeReplicas;
+
+                    /**
+                     * Decodes an ExcludeReplicas message from the specified reader or buffer, length delimited.
+                     * @param reader Reader or buffer to decode from
+                     * @returns ExcludeReplicas
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.DirectedReadOptions.ExcludeReplicas;
+
+                    /**
+                     * Verifies an ExcludeReplicas message.
+                     * @param message Plain object to verify
+                     * @returns `null` if valid, otherwise the reason why it is not
+                     */
+                    public static verify(message: { [k: string]: any }): (string|null);
+
+                    /**
+                     * Creates an ExcludeReplicas message from a plain object. Also converts values to their respective internal types.
+                     * @param object Plain object
+                     * @returns ExcludeReplicas
+                     */
+                    public static fromObject(object: { [k: string]: any }): google.spanner.v1.DirectedReadOptions.ExcludeReplicas;
 
-            namespace RequestOptions {
+                    /**
+                     * Creates a plain object from an ExcludeReplicas message. Also converts values to other types if specified.
+                     * @param message ExcludeReplicas
+                     * @param [options] Conversion options
+                     * @returns Plain object
+                     */
+                    public static toObject(message: google.spanner.v1.DirectedReadOptions.ExcludeReplicas, options?: $protobuf.IConversionOptions): { [k: string]: any };
 
-                /** Priority enum. */
-                enum Priority {
-                    PRIORITY_UNSPECIFIED = 0,
-                    PRIORITY_LOW = 1,
-                    PRIORITY_MEDIUM = 2,
-                    PRIORITY_HIGH = 3
+                    /**
+                     * Converts this ExcludeReplicas to JSON.
+                     * @returns JSON object
+                     */
+                    public toJSON(): { [k: string]: any };
+
+                    /**
+                     * Gets the default type url for ExcludeReplicas
+                     * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns The default type url
+                     */
+                    public static getTypeUrl(typeUrlPrefix?: string): string;
                 }
             }
 
@@ -17812,6 +19083,9 @@ export namespace google {
                 /** ExecuteSqlRequest requestOptions */
                 requestOptions?: (google.spanner.v1.IRequestOptions|null);
 
+                /** ExecuteSqlRequest directedReadOptions */
+                directedReadOptions?: (google.spanner.v1.IDirectedReadOptions|null);
+
                 /** ExecuteSqlRequest dataBoostEnabled */
                 dataBoostEnabled?: (boolean|null);
             }
@@ -17858,6 +19132,9 @@ export namespace google {
                 /** ExecuteSqlRequest requestOptions. */
                 public requestOptions?: (google.spanner.v1.IRequestOptions|null);
 
+                /** ExecuteSqlRequest directedReadOptions. */
+                public directedReadOptions?: (google.spanner.v1.IDirectedReadOptions|null);
+
                 /** ExecuteSqlRequest dataBoostEnabled. */
                 public dataBoostEnabled: boolean;
 
@@ -18984,6 +20261,9 @@ export namespace google {
                 /** ReadRequest requestOptions */
                 requestOptions?: (google.spanner.v1.IRequestOptions|null);
 
+                /** ReadRequest directedReadOptions */
+                directedReadOptions?: (google.spanner.v1.IDirectedReadOptions|null);
+
                 /** ReadRequest dataBoostEnabled */
                 dataBoostEnabled?: (boolean|null);
             }
@@ -19027,6 +20307,9 @@ export namespace google {
                 /** ReadRequest requestOptions. */
                 public requestOptions?: (google.spanner.v1.IRequestOptions|null);
 
+                /** ReadRequest directedReadOptions. */
+                public directedReadOptions?: (google.spanner.v1.IDirectedReadOptions|null);
+
                 /** ReadRequest dataBoostEnabled. */
                 public dataBoostEnabled: boolean;
 
@@ -19449,6 +20732,324 @@ export namespace google {
                  */
                 public static getTypeUrl(typeUrlPrefix?: string): string;
             }
+
+            /** Properties of a BatchWriteRequest. */
+            interface IBatchWriteRequest {
+
+                /** BatchWriteRequest session */
+                session?: (string|null);
+
+                /** BatchWriteRequest requestOptions */
+                requestOptions?: (google.spanner.v1.IRequestOptions|null);
+
+                /** BatchWriteRequest mutationGroups */
+                mutationGroups?: (google.spanner.v1.BatchWriteRequest.IMutationGroup[]|null);
+            }
+
+            /** Represents a BatchWriteRequest. */
+            class BatchWriteRequest implements IBatchWriteRequest {
+
+                /**
+                 * Constructs a new BatchWriteRequest.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.spanner.v1.IBatchWriteRequest);
+
+                /** BatchWriteRequest session. */
+                public session: string;
+
+                /** BatchWriteRequest requestOptions. */
+                public requestOptions?: (google.spanner.v1.IRequestOptions|null);
+
+                /** BatchWriteRequest mutationGroups. */
+                public mutationGroups: google.spanner.v1.BatchWriteRequest.IMutationGroup[];
+
+                /**
+                 * Creates a new BatchWriteRequest instance using the specified properties.
+                 * @param [properties] Properties to set
+                 * @returns BatchWriteRequest instance
+                 */
+                public static create(properties?: google.spanner.v1.IBatchWriteRequest): google.spanner.v1.BatchWriteRequest;
+
+                /**
+                 * Encodes the specified BatchWriteRequest message. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.verify|verify} messages.
+                 * @param message BatchWriteRequest message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encode(message: google.spanner.v1.IBatchWriteRequest, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Encodes the specified BatchWriteRequest message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.verify|verify} messages.
+                 * @param message BatchWriteRequest message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encodeDelimited(message: google.spanner.v1.IBatchWriteRequest, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Decodes a BatchWriteRequest message from the specified reader or buffer.
+                 * @param reader Reader or buffer to decode from
+                 * @param [length] Message length if known beforehand
+                 * @returns BatchWriteRequest
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.BatchWriteRequest;
+
+                /**
+                 * Decodes a BatchWriteRequest message from the specified reader or buffer, length delimited.
+                 * @param reader Reader or buffer to decode from
+                 * @returns BatchWriteRequest
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.BatchWriteRequest;
+
+                /**
+                 * Verifies a BatchWriteRequest message.
+                 * @param message Plain object to verify
+                 * @returns `null` if valid, otherwise the reason why it is not
+                 */
+                public static verify(message: { [k: string]: any }): (string|null);
+
+                /**
+                 * Creates a BatchWriteRequest message from a plain object. Also converts values to their respective internal types.
+                 * @param object Plain object
+                 * @returns BatchWriteRequest
+                 */
+                public static fromObject(object: { [k: string]: any }): google.spanner.v1.BatchWriteRequest;
+
+                /**
+                 * Creates a plain object from a BatchWriteRequest message. Also converts values to other types if specified.
+                 * @param message BatchWriteRequest
+                 * @param [options] Conversion options
+                 * @returns Plain object
+                 */
+                public static toObject(message: google.spanner.v1.BatchWriteRequest, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                /**
+                 * Converts this BatchWriteRequest to JSON.
+                 * @returns JSON object
+                 */
+                public toJSON(): { [k: string]: any };
+
+                /**
+                 * Gets the default type url for BatchWriteRequest
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
+            namespace BatchWriteRequest {
+
+                /** Properties of a MutationGroup. */
+                interface IMutationGroup {
+
+                    /** MutationGroup mutations */
+                    mutations?: (google.spanner.v1.IMutation[]|null);
+                }
+
+                /** Represents a MutationGroup. */
+                class MutationGroup implements IMutationGroup {
+
+                    /**
+                     * Constructs a new MutationGroup.
+                     * @param [properties] Properties to set
+                     */
+                    constructor(properties?: google.spanner.v1.BatchWriteRequest.IMutationGroup);
+
+                    /** MutationGroup mutations. */
+                    public mutations: google.spanner.v1.IMutation[];
+
+                    /**
+                     * Creates a new MutationGroup instance using the specified properties.
+                     * @param [properties] Properties to set
+                     * @returns MutationGroup instance
+                     */
+                    public static create(properties?: google.spanner.v1.BatchWriteRequest.IMutationGroup): google.spanner.v1.BatchWriteRequest.MutationGroup;
+
+                    /**
+                     * Encodes the specified MutationGroup message. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.MutationGroup.verify|verify} messages.
+                     * @param message MutationGroup message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encode(message: google.spanner.v1.BatchWriteRequest.IMutationGroup, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Encodes the specified MutationGroup message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.MutationGroup.verify|verify} messages.
+                     * @param message MutationGroup message or plain object to encode
+                     * @param [writer] Writer to encode to
+                     * @returns Writer
+                     */
+                    public static encodeDelimited(message: google.spanner.v1.BatchWriteRequest.IMutationGroup, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                    /**
+                     * Decodes a MutationGroup message from the specified reader or buffer.
+                     * @param reader Reader or buffer to decode from
+                     * @param [length] Message length if known beforehand
+                     * @returns MutationGroup
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.BatchWriteRequest.MutationGroup;
+
+                    /**
+                     * Decodes a MutationGroup message from the specified reader or buffer, length delimited.
+                     * @param reader Reader or buffer to decode from
+                     * @returns MutationGroup
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.BatchWriteRequest.MutationGroup;
+
+                    /**
+                     * Verifies a MutationGroup message.
+                     * @param message Plain object to verify
+                     * @returns `null` if valid, otherwise the reason why it is not
+                     */
+                    public static verify(message: { [k: string]: any }): (string|null);
+
+                    /**
+                     * Creates a MutationGroup message from a plain object. Also converts values to their respective internal types.
+                     * @param object Plain object
+                     * @returns MutationGroup
+                     */
+                    public static fromObject(object: { [k: string]: any }): google.spanner.v1.BatchWriteRequest.MutationGroup;
+
+                    /**
+                     * Creates a plain object from a MutationGroup message. Also converts values to other types if specified.
+                     * @param message MutationGroup
+                     * @param [options] Conversion options
+                     * @returns Plain object
+                     */
+                    public static toObject(message: google.spanner.v1.BatchWriteRequest.MutationGroup, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                    /**
+                     * Converts this MutationGroup to JSON.
+                     * @returns JSON object
+                     */
+                    public toJSON(): { [k: string]: any };
+
+                    /**
+                     * Gets the default type url for MutationGroup
+                     * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns The default type url
+                     */
+                    public static getTypeUrl(typeUrlPrefix?: string): string;
+                }
+            }
+
+            /** Properties of a BatchWriteResponse. */
+            interface IBatchWriteResponse {
+
+                /** BatchWriteResponse indexes */
+                indexes?: (number[]|null);
+
+                /** BatchWriteResponse status */
+                status?: (google.rpc.IStatus|null);
+
+                /** BatchWriteResponse commitTimestamp */
+                commitTimestamp?: (google.protobuf.ITimestamp|null);
+            }
+
+            /** Represents a BatchWriteResponse. */
+            class BatchWriteResponse implements IBatchWriteResponse {
+
+                /**
+                 * Constructs a new BatchWriteResponse.
+                 * @param [properties] Properties to set
+                 */
+                constructor(properties?: google.spanner.v1.IBatchWriteResponse);
+
+                /** BatchWriteResponse indexes. */
+                public indexes: number[];
+
+                /** BatchWriteResponse status. */
+                public status?: (google.rpc.IStatus|null);
+
+                /** BatchWriteResponse commitTimestamp. */
+                public commitTimestamp?: (google.protobuf.ITimestamp|null);
+
+                /**
+                 * Creates a new BatchWriteResponse instance using the specified properties.
+                 * @param [properties] Properties to set
+                 * @returns BatchWriteResponse instance
+                 */
+                public static create(properties?: google.spanner.v1.IBatchWriteResponse): google.spanner.v1.BatchWriteResponse;
+
+                /**
+                 * Encodes the specified BatchWriteResponse message. Does not implicitly {@link google.spanner.v1.BatchWriteResponse.verify|verify} messages.
+                 * @param message BatchWriteResponse message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encode(message: google.spanner.v1.IBatchWriteResponse, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Encodes the specified BatchWriteResponse message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteResponse.verify|verify} messages.
+                 * @param message BatchWriteResponse message or plain object to encode
+                 * @param [writer] Writer to encode to
+                 * @returns Writer
+                 */
+                public static encodeDelimited(message: google.spanner.v1.IBatchWriteResponse, writer?: $protobuf.Writer): $protobuf.Writer;
+
+                /**
+                 * Decodes a BatchWriteResponse message from the specified reader or buffer.
+                 * @param reader Reader or buffer to decode from
+                 * @param [length] Message length if known beforehand
+                 * @returns BatchWriteResponse
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decode(reader: ($protobuf.Reader|Uint8Array), length?: number): google.spanner.v1.BatchWriteResponse;
+
+                /**
+                 * Decodes a BatchWriteResponse message from the specified reader or buffer, length delimited.
+                 * @param reader Reader or buffer to decode from
+                 * @returns BatchWriteResponse
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                public static decodeDelimited(reader: ($protobuf.Reader|Uint8Array)): google.spanner.v1.BatchWriteResponse;
+
+                /**
+                 * Verifies a BatchWriteResponse message.
+                 * @param message Plain object to verify
+                 * @returns `null` if valid, otherwise the reason why it is not
+                 */
+                public static verify(message: { [k: string]: any }): (string|null);
+
+                /**
+                 * Creates a BatchWriteResponse message from a plain object. Also converts values to their respective internal types.
+                 * @param object Plain object
+                 * @returns BatchWriteResponse
+                 */
+                public static fromObject(object: { [k: string]: any }): google.spanner.v1.BatchWriteResponse;
+
+                /**
+                 * Creates a plain object from a BatchWriteResponse message. Also converts values to other types if specified.
+                 * @param message BatchWriteResponse
+                 * @param [options] Conversion options
+                 * @returns Plain object
+                 */
+                public static toObject(message: google.spanner.v1.BatchWriteResponse, options?: $protobuf.IConversionOptions): { [k: string]: any };
+
+                /**
+                 * Converts this BatchWriteResponse to JSON.
+                 * @returns JSON object
+                 */
+                public toJSON(): { [k: string]: any };
+
+                /**
+                 * Gets the default type url for BatchWriteResponse
+                 * @param [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns The default type url
+                 */
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
         }
     }
 
@@ -20368,6 +21969,9 @@ export namespace google {
 
             /** Publishing librarySettings */
             librarySettings?: (google.api.IClientLibrarySettings[]|null);
+
+            /** Publishing protoReferenceDocumentationUri */
+            protoReferenceDocumentationUri?: (string|null);
         }
 
         /** Represents a Publishing. */
@@ -20406,6 +22010,9 @@ export namespace google {
             /** Publishing librarySettings. */
             public librarySettings: google.api.IClientLibrarySettings[];
 
+            /** Publishing protoReferenceDocumentationUri. */
+            public protoReferenceDocumentationUri: string;
+
             /**
              * Creates a new Publishing instance using the specified properties.
              * @param [properties] Properties to set
@@ -20986,6 +22593,21 @@ export namespace google {
 
             /** DotnetSettings common */
             common?: (google.api.ICommonLanguageSettings|null);
+
+            /** DotnetSettings renamedServices */
+            renamedServices?: ({ [k: string]: string }|null);
+
+            /** DotnetSettings renamedResources */
+            renamedResources?: ({ [k: string]: string }|null);
+
+            /** DotnetSettings ignoredResources */
+            ignoredResources?: (string[]|null);
+
+            /** DotnetSettings forcedNamespaceAliases */
+            forcedNamespaceAliases?: (string[]|null);
+
+            /** DotnetSettings handwrittenSignatures */
+            handwrittenSignatures?: (string[]|null);
         }
 
         /** Represents a DotnetSettings. */
@@ -21000,6 +22622,21 @@ export namespace google {
             /** DotnetSettings common. */
             public common?: (google.api.ICommonLanguageSettings|null);
 
+            /** DotnetSettings renamedServices. */
+            public renamedServices: { [k: string]: string };
+
+            /** DotnetSettings renamedResources. */
+            public renamedResources: { [k: string]: string };
+
+            /** DotnetSettings ignoredResources. */
+            public ignoredResources: string[];
+
+            /** DotnetSettings forcedNamespaceAliases. */
+            public forcedNamespaceAliases: string[];
+
+            /** DotnetSettings handwrittenSignatures. */
+            public handwrittenSignatures: string[];
+
             /**
              * Creates a new DotnetSettings instance using the specified properties.
              * @param [properties] Properties to set
@@ -21499,7 +23136,10 @@ export namespace google {
             CLOUD = 1,
             ADS = 2,
             PHOTOS = 3,
-            STREET_VIEW = 4
+            STREET_VIEW = 4,
+            SHOPPING = 5,
+            GEO = 6,
+            GENERATIVE_AI = 7
         }
 
         /** ClientLibraryDestination enum. */
diff --git a/protos/protos.js b/protos/protos.js
index 296c1cf64..b2ec5546f 100644
--- a/protos/protos.js
+++ b/protos/protos.js
@@ -2217,6 +2217,9 @@
                  * @memberof google.protobuf
                  * @interface IExtensionRangeOptions
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] ExtensionRangeOptions uninterpretedOption
+                 * @property {Array.<google.protobuf.ExtensionRangeOptions.IDeclaration>|null} [declaration] ExtensionRangeOptions declaration
+                 * @property {google.protobuf.IFeatureSet|null} [features] ExtensionRangeOptions features
+                 * @property {google.protobuf.ExtensionRangeOptions.VerificationState|null} [verification] ExtensionRangeOptions verification
                  */
     
                 /**
@@ -2229,6 +2232,7 @@
                  */
                 function ExtensionRangeOptions(properties) {
                     this.uninterpretedOption = [];
+                    this.declaration = [];
                     if (properties)
                         for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                             if (properties[keys[i]] != null)
@@ -2243,6 +2247,30 @@
                  */
                 ExtensionRangeOptions.prototype.uninterpretedOption = $util.emptyArray;
     
+                /**
+                 * ExtensionRangeOptions declaration.
+                 * @member {Array.<google.protobuf.ExtensionRangeOptions.IDeclaration>} declaration
+                 * @memberof google.protobuf.ExtensionRangeOptions
+                 * @instance
+                 */
+                ExtensionRangeOptions.prototype.declaration = $util.emptyArray;
+    
+                /**
+                 * ExtensionRangeOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.ExtensionRangeOptions
+                 * @instance
+                 */
+                ExtensionRangeOptions.prototype.features = null;
+    
+                /**
+                 * ExtensionRangeOptions verification.
+                 * @member {google.protobuf.ExtensionRangeOptions.VerificationState} verification
+                 * @memberof google.protobuf.ExtensionRangeOptions
+                 * @instance
+                 */
+                ExtensionRangeOptions.prototype.verification = 1;
+    
                 /**
                  * Creates a new ExtensionRangeOptions instance using the specified properties.
                  * @function create
@@ -2267,6 +2295,13 @@
                 ExtensionRangeOptions.encode = function encode(message, writer) {
                     if (!writer)
                         writer = $Writer.create();
+                    if (message.declaration != null && message.declaration.length)
+                        for (var i = 0; i < message.declaration.length; ++i)
+                            $root.google.protobuf.ExtensionRangeOptions.Declaration.encode(message.declaration[i], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                    if (message.verification != null && Object.hasOwnProperty.call(message, "verification"))
+                        writer.uint32(/* id 3, wireType 0 =*/24).int32(message.verification);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 50, wireType 2 =*/402).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -2310,6 +2345,20 @@
                                 message.uninterpretedOption.push($root.google.protobuf.UninterpretedOption.decode(reader, reader.uint32()));
                                 break;
                             }
+                        case 2: {
+                                if (!(message.declaration && message.declaration.length))
+                                    message.declaration = [];
+                                message.declaration.push($root.google.protobuf.ExtensionRangeOptions.Declaration.decode(reader, reader.uint32()));
+                                break;
+                            }
+                        case 50: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
+                        case 3: {
+                                message.verification = reader.int32();
+                                break;
+                            }
                         default:
                             reader.skipType(tag & 7);
                             break;
@@ -2354,6 +2403,28 @@
                                 return "uninterpretedOption." + error;
                         }
                     }
+                    if (message.declaration != null && message.hasOwnProperty("declaration")) {
+                        if (!Array.isArray(message.declaration))
+                            return "declaration: array expected";
+                        for (var i = 0; i < message.declaration.length; ++i) {
+                            var error = $root.google.protobuf.ExtensionRangeOptions.Declaration.verify(message.declaration[i]);
+                            if (error)
+                                return "declaration." + error;
+                        }
+                    }
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
+                    if (message.verification != null && message.hasOwnProperty("verification"))
+                        switch (message.verification) {
+                        default:
+                            return "verification: enum value expected";
+                        case 0:
+                        case 1:
+                            break;
+                        }
                     return null;
                 };
     
@@ -2379,6 +2450,37 @@
                             message.uninterpretedOption[i] = $root.google.protobuf.UninterpretedOption.fromObject(object.uninterpretedOption[i]);
                         }
                     }
+                    if (object.declaration) {
+                        if (!Array.isArray(object.declaration))
+                            throw TypeError(".google.protobuf.ExtensionRangeOptions.declaration: array expected");
+                        message.declaration = [];
+                        for (var i = 0; i < object.declaration.length; ++i) {
+                            if (typeof object.declaration[i] !== "object")
+                                throw TypeError(".google.protobuf.ExtensionRangeOptions.declaration: object expected");
+                            message.declaration[i] = $root.google.protobuf.ExtensionRangeOptions.Declaration.fromObject(object.declaration[i]);
+                        }
+                    }
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.ExtensionRangeOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
+                    switch (object.verification) {
+                    case "DECLARATION":
+                    case 0:
+                        message.verification = 0;
+                        break;
+                    default:
+                        if (typeof object.verification === "number") {
+                            message.verification = object.verification;
+                            break;
+                        }
+                        break;
+                    case "UNVERIFIED":
+                    case 1:
+                        message.verification = 1;
+                        break;
+                    }
                     return message;
                 };
     
@@ -2395,8 +2497,23 @@
                     if (!options)
                         options = {};
                     var object = {};
-                    if (options.arrays || options.defaults)
+                    if (options.arrays || options.defaults) {
+                        object.declaration = [];
                         object.uninterpretedOption = [];
+                    }
+                    if (options.defaults) {
+                        object.verification = options.enums === String ? "UNVERIFIED" : 1;
+                        object.features = null;
+                    }
+                    if (message.declaration && message.declaration.length) {
+                        object.declaration = [];
+                        for (var j = 0; j < message.declaration.length; ++j)
+                            object.declaration[j] = $root.google.protobuf.ExtensionRangeOptions.Declaration.toObject(message.declaration[j], options);
+                    }
+                    if (message.verification != null && message.hasOwnProperty("verification"))
+                        object.verification = options.enums === String ? $root.google.protobuf.ExtensionRangeOptions.VerificationState[message.verification] === undefined ? message.verification : $root.google.protobuf.ExtensionRangeOptions.VerificationState[message.verification] : message.verification;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -2431,6 +2548,316 @@
                     return typeUrlPrefix + "/google.protobuf.ExtensionRangeOptions";
                 };
     
+                ExtensionRangeOptions.Declaration = (function() {
+    
+                    /**
+                     * Properties of a Declaration.
+                     * @memberof google.protobuf.ExtensionRangeOptions
+                     * @interface IDeclaration
+                     * @property {number|null} [number] Declaration number
+                     * @property {string|null} [fullName] Declaration fullName
+                     * @property {string|null} [type] Declaration type
+                     * @property {boolean|null} [reserved] Declaration reserved
+                     * @property {boolean|null} [repeated] Declaration repeated
+                     */
+    
+                    /**
+                     * Constructs a new Declaration.
+                     * @memberof google.protobuf.ExtensionRangeOptions
+                     * @classdesc Represents a Declaration.
+                     * @implements IDeclaration
+                     * @constructor
+                     * @param {google.protobuf.ExtensionRangeOptions.IDeclaration=} [properties] Properties to set
+                     */
+                    function Declaration(properties) {
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * Declaration number.
+                     * @member {number} number
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     */
+                    Declaration.prototype.number = 0;
+    
+                    /**
+                     * Declaration fullName.
+                     * @member {string} fullName
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     */
+                    Declaration.prototype.fullName = "";
+    
+                    /**
+                     * Declaration type.
+                     * @member {string} type
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     */
+                    Declaration.prototype.type = "";
+    
+                    /**
+                     * Declaration reserved.
+                     * @member {boolean} reserved
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     */
+                    Declaration.prototype.reserved = false;
+    
+                    /**
+                     * Declaration repeated.
+                     * @member {boolean} repeated
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     */
+                    Declaration.prototype.repeated = false;
+    
+                    /**
+                     * Creates a new Declaration instance using the specified properties.
+                     * @function create
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {google.protobuf.ExtensionRangeOptions.IDeclaration=} [properties] Properties to set
+                     * @returns {google.protobuf.ExtensionRangeOptions.Declaration} Declaration instance
+                     */
+                    Declaration.create = function create(properties) {
+                        return new Declaration(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified Declaration message. Does not implicitly {@link google.protobuf.ExtensionRangeOptions.Declaration.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {google.protobuf.ExtensionRangeOptions.IDeclaration} message Declaration message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    Declaration.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.number != null && Object.hasOwnProperty.call(message, "number"))
+                            writer.uint32(/* id 1, wireType 0 =*/8).int32(message.number);
+                        if (message.fullName != null && Object.hasOwnProperty.call(message, "fullName"))
+                            writer.uint32(/* id 2, wireType 2 =*/18).string(message.fullName);
+                        if (message.type != null && Object.hasOwnProperty.call(message, "type"))
+                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.type);
+                        if (message.reserved != null && Object.hasOwnProperty.call(message, "reserved"))
+                            writer.uint32(/* id 5, wireType 0 =*/40).bool(message.reserved);
+                        if (message.repeated != null && Object.hasOwnProperty.call(message, "repeated"))
+                            writer.uint32(/* id 6, wireType 0 =*/48).bool(message.repeated);
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified Declaration message, length delimited. Does not implicitly {@link google.protobuf.ExtensionRangeOptions.Declaration.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {google.protobuf.ExtensionRangeOptions.IDeclaration} message Declaration message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    Declaration.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes a Declaration message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.protobuf.ExtensionRangeOptions.Declaration} Declaration
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    Declaration.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.protobuf.ExtensionRangeOptions.Declaration();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.number = reader.int32();
+                                    break;
+                                }
+                            case 2: {
+                                    message.fullName = reader.string();
+                                    break;
+                                }
+                            case 3: {
+                                    message.type = reader.string();
+                                    break;
+                                }
+                            case 5: {
+                                    message.reserved = reader.bool();
+                                    break;
+                                }
+                            case 6: {
+                                    message.repeated = reader.bool();
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes a Declaration message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.protobuf.ExtensionRangeOptions.Declaration} Declaration
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    Declaration.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies a Declaration message.
+                     * @function verify
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    Declaration.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.number != null && message.hasOwnProperty("number"))
+                            if (!$util.isInteger(message.number))
+                                return "number: integer expected";
+                        if (message.fullName != null && message.hasOwnProperty("fullName"))
+                            if (!$util.isString(message.fullName))
+                                return "fullName: string expected";
+                        if (message.type != null && message.hasOwnProperty("type"))
+                            if (!$util.isString(message.type))
+                                return "type: string expected";
+                        if (message.reserved != null && message.hasOwnProperty("reserved"))
+                            if (typeof message.reserved !== "boolean")
+                                return "reserved: boolean expected";
+                        if (message.repeated != null && message.hasOwnProperty("repeated"))
+                            if (typeof message.repeated !== "boolean")
+                                return "repeated: boolean expected";
+                        return null;
+                    };
+    
+                    /**
+                     * Creates a Declaration message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.protobuf.ExtensionRangeOptions.Declaration} Declaration
+                     */
+                    Declaration.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.protobuf.ExtensionRangeOptions.Declaration)
+                            return object;
+                        var message = new $root.google.protobuf.ExtensionRangeOptions.Declaration();
+                        if (object.number != null)
+                            message.number = object.number | 0;
+                        if (object.fullName != null)
+                            message.fullName = String(object.fullName);
+                        if (object.type != null)
+                            message.type = String(object.type);
+                        if (object.reserved != null)
+                            message.reserved = Boolean(object.reserved);
+                        if (object.repeated != null)
+                            message.repeated = Boolean(object.repeated);
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from a Declaration message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {google.protobuf.ExtensionRangeOptions.Declaration} message Declaration
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    Declaration.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.defaults) {
+                            object.number = 0;
+                            object.fullName = "";
+                            object.type = "";
+                            object.reserved = false;
+                            object.repeated = false;
+                        }
+                        if (message.number != null && message.hasOwnProperty("number"))
+                            object.number = message.number;
+                        if (message.fullName != null && message.hasOwnProperty("fullName"))
+                            object.fullName = message.fullName;
+                        if (message.type != null && message.hasOwnProperty("type"))
+                            object.type = message.type;
+                        if (message.reserved != null && message.hasOwnProperty("reserved"))
+                            object.reserved = message.reserved;
+                        if (message.repeated != null && message.hasOwnProperty("repeated"))
+                            object.repeated = message.repeated;
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this Declaration to JSON.
+                     * @function toJSON
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    Declaration.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for Declaration
+                     * @function getTypeUrl
+                     * @memberof google.protobuf.ExtensionRangeOptions.Declaration
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    Declaration.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.protobuf.ExtensionRangeOptions.Declaration";
+                    };
+    
+                    return Declaration;
+                })();
+    
+                /**
+                 * VerificationState enum.
+                 * @name google.protobuf.ExtensionRangeOptions.VerificationState
+                 * @enum {number}
+                 * @property {number} DECLARATION=0 DECLARATION value
+                 * @property {number} UNVERIFIED=1 UNVERIFIED value
+                 */
+                ExtensionRangeOptions.VerificationState = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "DECLARATION"] = 0;
+                    values[valuesById[1] = "UNVERIFIED"] = 1;
+                    return values;
+                })();
+    
                 return ExtensionRangeOptions;
             })();
     
@@ -4760,6 +5187,7 @@
                  * @property {string|null} [phpNamespace] FileOptions phpNamespace
                  * @property {string|null} [phpMetadataNamespace] FileOptions phpMetadataNamespace
                  * @property {string|null} [rubyPackage] FileOptions rubyPackage
+                 * @property {google.protobuf.IFeatureSet|null} [features] FileOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] FileOptions uninterpretedOption
                  * @property {Array.<google.api.IResourceDescriptor>|null} [".google.api.resourceDefinition"] FileOptions .google.api.resourceDefinition
                  */
@@ -4941,6 +5369,14 @@
                  */
                 FileOptions.prototype.rubyPackage = "";
     
+                /**
+                 * FileOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.FileOptions
+                 * @instance
+                 */
+                FileOptions.prototype.features = null;
+    
                 /**
                  * FileOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -5021,6 +5457,8 @@
                         writer.uint32(/* id 44, wireType 2 =*/354).string(message.phpMetadataNamespace);
                     if (message.rubyPackage != null && Object.hasOwnProperty.call(message, "rubyPackage"))
                         writer.uint32(/* id 45, wireType 2 =*/362).string(message.rubyPackage);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 50, wireType 2 =*/402).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -5141,6 +5579,10 @@
                                 message.rubyPackage = reader.string();
                                 break;
                             }
+                        case 50: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -5254,6 +5696,11 @@
                     if (message.rubyPackage != null && message.hasOwnProperty("rubyPackage"))
                         if (!$util.isString(message.rubyPackage))
                             return "rubyPackage: string expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -5345,6 +5792,11 @@
                         message.phpMetadataNamespace = String(object.phpMetadataNamespace);
                     if (object.rubyPackage != null)
                         message.rubyPackage = String(object.rubyPackage);
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.FileOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.FileOptions.uninterpretedOption: array expected");
@@ -5406,6 +5858,7 @@
                         object.phpGenericServices = false;
                         object.phpMetadataNamespace = "";
                         object.rubyPackage = "";
+                        object.features = null;
                     }
                     if (message.javaPackage != null && message.hasOwnProperty("javaPackage"))
                         object.javaPackage = message.javaPackage;
@@ -5447,6 +5900,8 @@
                         object.phpMetadataNamespace = message.phpMetadataNamespace;
                     if (message.rubyPackage != null && message.hasOwnProperty("rubyPackage"))
                         object.rubyPackage = message.rubyPackage;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -5516,6 +5971,7 @@
                  * @property {boolean|null} [deprecated] MessageOptions deprecated
                  * @property {boolean|null} [mapEntry] MessageOptions mapEntry
                  * @property {boolean|null} [deprecatedLegacyJsonFieldConflicts] MessageOptions deprecatedLegacyJsonFieldConflicts
+                 * @property {google.protobuf.IFeatureSet|null} [features] MessageOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] MessageOptions uninterpretedOption
                  * @property {google.api.IResourceDescriptor|null} [".google.api.resource"] MessageOptions .google.api.resource
                  */
@@ -5576,6 +6032,14 @@
                  */
                 MessageOptions.prototype.deprecatedLegacyJsonFieldConflicts = false;
     
+                /**
+                 * MessageOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.MessageOptions
+                 * @instance
+                 */
+                MessageOptions.prototype.features = null;
+    
                 /**
                  * MessageOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -5626,6 +6090,8 @@
                         writer.uint32(/* id 7, wireType 0 =*/56).bool(message.mapEntry);
                     if (message.deprecatedLegacyJsonFieldConflicts != null && Object.hasOwnProperty.call(message, "deprecatedLegacyJsonFieldConflicts"))
                         writer.uint32(/* id 11, wireType 0 =*/88).bool(message.deprecatedLegacyJsonFieldConflicts);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 12, wireType 2 =*/98).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -5685,6 +6151,10 @@
                                 message.deprecatedLegacyJsonFieldConflicts = reader.bool();
                                 break;
                             }
+                        case 12: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -5745,6 +6215,11 @@
                     if (message.deprecatedLegacyJsonFieldConflicts != null && message.hasOwnProperty("deprecatedLegacyJsonFieldConflicts"))
                         if (typeof message.deprecatedLegacyJsonFieldConflicts !== "boolean")
                             return "deprecatedLegacyJsonFieldConflicts: boolean expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -5784,6 +6259,11 @@
                         message.mapEntry = Boolean(object.mapEntry);
                     if (object.deprecatedLegacyJsonFieldConflicts != null)
                         message.deprecatedLegacyJsonFieldConflicts = Boolean(object.deprecatedLegacyJsonFieldConflicts);
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.MessageOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.MessageOptions.uninterpretedOption: array expected");
@@ -5823,6 +6303,7 @@
                         object.deprecated = false;
                         object.mapEntry = false;
                         object.deprecatedLegacyJsonFieldConflicts = false;
+                        object.features = null;
                         object[".google.api.resource"] = null;
                     }
                     if (message.messageSetWireFormat != null && message.hasOwnProperty("messageSetWireFormat"))
@@ -5835,6 +6316,8 @@
                         object.mapEntry = message.mapEntry;
                     if (message.deprecatedLegacyJsonFieldConflicts != null && message.hasOwnProperty("deprecatedLegacyJsonFieldConflicts"))
                         object.deprecatedLegacyJsonFieldConflicts = message.deprecatedLegacyJsonFieldConflicts;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -5889,7 +6372,9 @@
                  * @property {boolean|null} [weak] FieldOptions weak
                  * @property {boolean|null} [debugRedact] FieldOptions debugRedact
                  * @property {google.protobuf.FieldOptions.OptionRetention|null} [retention] FieldOptions retention
-                 * @property {google.protobuf.FieldOptions.OptionTargetType|null} [target] FieldOptions target
+                 * @property {Array.<google.protobuf.FieldOptions.OptionTargetType>|null} [targets] FieldOptions targets
+                 * @property {Array.<google.protobuf.FieldOptions.IEditionDefault>|null} [editionDefaults] FieldOptions editionDefaults
+                 * @property {google.protobuf.IFeatureSet|null} [features] FieldOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] FieldOptions uninterpretedOption
                  * @property {Array.<google.api.FieldBehavior>|null} [".google.api.fieldBehavior"] FieldOptions .google.api.fieldBehavior
                  * @property {google.api.IResourceReference|null} [".google.api.resourceReference"] FieldOptions .google.api.resourceReference
@@ -5904,6 +6389,8 @@
                  * @param {google.protobuf.IFieldOptions=} [properties] Properties to set
                  */
                 function FieldOptions(properties) {
+                    this.targets = [];
+                    this.editionDefaults = [];
                     this.uninterpretedOption = [];
                     this[".google.api.fieldBehavior"] = [];
                     if (properties)
@@ -5985,12 +6472,28 @@
                 FieldOptions.prototype.retention = 0;
     
                 /**
-                 * FieldOptions target.
-                 * @member {google.protobuf.FieldOptions.OptionTargetType} target
+                 * FieldOptions targets.
+                 * @member {Array.<google.protobuf.FieldOptions.OptionTargetType>} targets
+                 * @memberof google.protobuf.FieldOptions
+                 * @instance
+                 */
+                FieldOptions.prototype.targets = $util.emptyArray;
+    
+                /**
+                 * FieldOptions editionDefaults.
+                 * @member {Array.<google.protobuf.FieldOptions.IEditionDefault>} editionDefaults
+                 * @memberof google.protobuf.FieldOptions
+                 * @instance
+                 */
+                FieldOptions.prototype.editionDefaults = $util.emptyArray;
+    
+                /**
+                 * FieldOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
                  * @memberof google.protobuf.FieldOptions
                  * @instance
                  */
-                FieldOptions.prototype.target = 0;
+                FieldOptions.prototype.features = null;
     
                 /**
                  * FieldOptions uninterpretedOption.
@@ -6058,8 +6561,14 @@
                         writer.uint32(/* id 16, wireType 0 =*/128).bool(message.debugRedact);
                     if (message.retention != null && Object.hasOwnProperty.call(message, "retention"))
                         writer.uint32(/* id 17, wireType 0 =*/136).int32(message.retention);
-                    if (message.target != null && Object.hasOwnProperty.call(message, "target"))
-                        writer.uint32(/* id 18, wireType 0 =*/144).int32(message.target);
+                    if (message.targets != null && message.targets.length)
+                        for (var i = 0; i < message.targets.length; ++i)
+                            writer.uint32(/* id 19, wireType 0 =*/152).int32(message.targets[i]);
+                    if (message.editionDefaults != null && message.editionDefaults.length)
+                        for (var i = 0; i < message.editionDefaults.length; ++i)
+                            $root.google.protobuf.FieldOptions.EditionDefault.encode(message.editionDefaults[i], writer.uint32(/* id 20, wireType 2 =*/162).fork()).ldelim();
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 21, wireType 2 =*/170).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -6141,8 +6650,25 @@
                                 message.retention = reader.int32();
                                 break;
                             }
-                        case 18: {
-                                message.target = reader.int32();
+                        case 19: {
+                                if (!(message.targets && message.targets.length))
+                                    message.targets = [];
+                                if ((tag & 7) === 2) {
+                                    var end2 = reader.uint32() + reader.pos;
+                                    while (reader.pos < end2)
+                                        message.targets.push(reader.int32());
+                                } else
+                                    message.targets.push(reader.int32());
+                                break;
+                            }
+                        case 20: {
+                                if (!(message.editionDefaults && message.editionDefaults.length))
+                                    message.editionDefaults = [];
+                                message.editionDefaults.push($root.google.protobuf.FieldOptions.EditionDefault.decode(reader, reader.uint32()));
+                                break;
+                            }
+                        case 21: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
                                 break;
                             }
                         case 999: {
@@ -6246,22 +6772,40 @@
                         case 2:
                             break;
                         }
-                    if (message.target != null && message.hasOwnProperty("target"))
-                        switch (message.target) {
-                        default:
-                            return "target: enum value expected";
-                        case 0:
-                        case 1:
-                        case 2:
-                        case 3:
-                        case 4:
-                        case 5:
-                        case 6:
-                        case 7:
-                        case 8:
-                        case 9:
-                            break;
+                    if (message.targets != null && message.hasOwnProperty("targets")) {
+                        if (!Array.isArray(message.targets))
+                            return "targets: array expected";
+                        for (var i = 0; i < message.targets.length; ++i)
+                            switch (message.targets[i]) {
+                            default:
+                                return "targets: enum value[] expected";
+                            case 0:
+                            case 1:
+                            case 2:
+                            case 3:
+                            case 4:
+                            case 5:
+                            case 6:
+                            case 7:
+                            case 8:
+                            case 9:
+                                break;
+                            }
+                    }
+                    if (message.editionDefaults != null && message.hasOwnProperty("editionDefaults")) {
+                        if (!Array.isArray(message.editionDefaults))
+                            return "editionDefaults: array expected";
+                        for (var i = 0; i < message.editionDefaults.length; ++i) {
+                            var error = $root.google.protobuf.FieldOptions.EditionDefault.verify(message.editionDefaults[i]);
+                            if (error)
+                                return "editionDefaults." + error;
                         }
+                    }
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -6381,53 +6925,73 @@
                         message.retention = 2;
                         break;
                     }
-                    switch (object.target) {
-                    default:
-                        if (typeof object.target === "number") {
-                            message.target = object.target;
-                            break;
+                    if (object.targets) {
+                        if (!Array.isArray(object.targets))
+                            throw TypeError(".google.protobuf.FieldOptions.targets: array expected");
+                        message.targets = [];
+                        for (var i = 0; i < object.targets.length; ++i)
+                            switch (object.targets[i]) {
+                            default:
+                                if (typeof object.targets[i] === "number") {
+                                    message.targets[i] = object.targets[i];
+                                    break;
+                                }
+                            case "TARGET_TYPE_UNKNOWN":
+                            case 0:
+                                message.targets[i] = 0;
+                                break;
+                            case "TARGET_TYPE_FILE":
+                            case 1:
+                                message.targets[i] = 1;
+                                break;
+                            case "TARGET_TYPE_EXTENSION_RANGE":
+                            case 2:
+                                message.targets[i] = 2;
+                                break;
+                            case "TARGET_TYPE_MESSAGE":
+                            case 3:
+                                message.targets[i] = 3;
+                                break;
+                            case "TARGET_TYPE_FIELD":
+                            case 4:
+                                message.targets[i] = 4;
+                                break;
+                            case "TARGET_TYPE_ONEOF":
+                            case 5:
+                                message.targets[i] = 5;
+                                break;
+                            case "TARGET_TYPE_ENUM":
+                            case 6:
+                                message.targets[i] = 6;
+                                break;
+                            case "TARGET_TYPE_ENUM_ENTRY":
+                            case 7:
+                                message.targets[i] = 7;
+                                break;
+                            case "TARGET_TYPE_SERVICE":
+                            case 8:
+                                message.targets[i] = 8;
+                                break;
+                            case "TARGET_TYPE_METHOD":
+                            case 9:
+                                message.targets[i] = 9;
+                                break;
+                            }
+                    }
+                    if (object.editionDefaults) {
+                        if (!Array.isArray(object.editionDefaults))
+                            throw TypeError(".google.protobuf.FieldOptions.editionDefaults: array expected");
+                        message.editionDefaults = [];
+                        for (var i = 0; i < object.editionDefaults.length; ++i) {
+                            if (typeof object.editionDefaults[i] !== "object")
+                                throw TypeError(".google.protobuf.FieldOptions.editionDefaults: object expected");
+                            message.editionDefaults[i] = $root.google.protobuf.FieldOptions.EditionDefault.fromObject(object.editionDefaults[i]);
                         }
-                        break;
-                    case "TARGET_TYPE_UNKNOWN":
-                    case 0:
-                        message.target = 0;
-                        break;
-                    case "TARGET_TYPE_FILE":
-                    case 1:
-                        message.target = 1;
-                        break;
-                    case "TARGET_TYPE_EXTENSION_RANGE":
-                    case 2:
-                        message.target = 2;
-                        break;
-                    case "TARGET_TYPE_MESSAGE":
-                    case 3:
-                        message.target = 3;
-                        break;
-                    case "TARGET_TYPE_FIELD":
-                    case 4:
-                        message.target = 4;
-                        break;
-                    case "TARGET_TYPE_ONEOF":
-                    case 5:
-                        message.target = 5;
-                        break;
-                    case "TARGET_TYPE_ENUM":
-                    case 6:
-                        message.target = 6;
-                        break;
-                    case "TARGET_TYPE_ENUM_ENTRY":
-                    case 7:
-                        message.target = 7;
-                        break;
-                    case "TARGET_TYPE_SERVICE":
-                    case 8:
-                        message.target = 8;
-                        break;
-                    case "TARGET_TYPE_METHOD":
-                    case 9:
-                        message.target = 9;
-                        break;
+                    }
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.FieldOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
                     }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
@@ -6506,6 +7070,8 @@
                         options = {};
                     var object = {};
                     if (options.arrays || options.defaults) {
+                        object.targets = [];
+                        object.editionDefaults = [];
                         object.uninterpretedOption = [];
                         object[".google.api.fieldBehavior"] = [];
                     }
@@ -6519,7 +7085,7 @@
                         object.unverifiedLazy = false;
                         object.debugRedact = false;
                         object.retention = options.enums === String ? "RETENTION_UNKNOWN" : 0;
-                        object.target = options.enums === String ? "TARGET_TYPE_UNKNOWN" : 0;
+                        object.features = null;
                         object[".google.api.resourceReference"] = null;
                     }
                     if (message.ctype != null && message.hasOwnProperty("ctype"))
@@ -6540,8 +7106,18 @@
                         object.debugRedact = message.debugRedact;
                     if (message.retention != null && message.hasOwnProperty("retention"))
                         object.retention = options.enums === String ? $root.google.protobuf.FieldOptions.OptionRetention[message.retention] === undefined ? message.retention : $root.google.protobuf.FieldOptions.OptionRetention[message.retention] : message.retention;
-                    if (message.target != null && message.hasOwnProperty("target"))
-                        object.target = options.enums === String ? $root.google.protobuf.FieldOptions.OptionTargetType[message.target] === undefined ? message.target : $root.google.protobuf.FieldOptions.OptionTargetType[message.target] : message.target;
+                    if (message.targets && message.targets.length) {
+                        object.targets = [];
+                        for (var j = 0; j < message.targets.length; ++j)
+                            object.targets[j] = options.enums === String ? $root.google.protobuf.FieldOptions.OptionTargetType[message.targets[j]] === undefined ? message.targets[j] : $root.google.protobuf.FieldOptions.OptionTargetType[message.targets[j]] : message.targets[j];
+                    }
+                    if (message.editionDefaults && message.editionDefaults.length) {
+                        object.editionDefaults = [];
+                        for (var j = 0; j < message.editionDefaults.length; ++j)
+                            object.editionDefaults[j] = $root.google.protobuf.FieldOptions.EditionDefault.toObject(message.editionDefaults[j], options);
+                    }
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -6661,6 +7237,233 @@
                     return values;
                 })();
     
+                FieldOptions.EditionDefault = (function() {
+    
+                    /**
+                     * Properties of an EditionDefault.
+                     * @memberof google.protobuf.FieldOptions
+                     * @interface IEditionDefault
+                     * @property {string|null} [edition] EditionDefault edition
+                     * @property {string|null} [value] EditionDefault value
+                     */
+    
+                    /**
+                     * Constructs a new EditionDefault.
+                     * @memberof google.protobuf.FieldOptions
+                     * @classdesc Represents an EditionDefault.
+                     * @implements IEditionDefault
+                     * @constructor
+                     * @param {google.protobuf.FieldOptions.IEditionDefault=} [properties] Properties to set
+                     */
+                    function EditionDefault(properties) {
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * EditionDefault edition.
+                     * @member {string} edition
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @instance
+                     */
+                    EditionDefault.prototype.edition = "";
+    
+                    /**
+                     * EditionDefault value.
+                     * @member {string} value
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @instance
+                     */
+                    EditionDefault.prototype.value = "";
+    
+                    /**
+                     * Creates a new EditionDefault instance using the specified properties.
+                     * @function create
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {google.protobuf.FieldOptions.IEditionDefault=} [properties] Properties to set
+                     * @returns {google.protobuf.FieldOptions.EditionDefault} EditionDefault instance
+                     */
+                    EditionDefault.create = function create(properties) {
+                        return new EditionDefault(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified EditionDefault message. Does not implicitly {@link google.protobuf.FieldOptions.EditionDefault.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {google.protobuf.FieldOptions.IEditionDefault} message EditionDefault message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    EditionDefault.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.edition != null && Object.hasOwnProperty.call(message, "edition"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.edition);
+                        if (message.value != null && Object.hasOwnProperty.call(message, "value"))
+                            writer.uint32(/* id 2, wireType 2 =*/18).string(message.value);
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified EditionDefault message, length delimited. Does not implicitly {@link google.protobuf.FieldOptions.EditionDefault.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {google.protobuf.FieldOptions.IEditionDefault} message EditionDefault message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    EditionDefault.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes an EditionDefault message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.protobuf.FieldOptions.EditionDefault} EditionDefault
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    EditionDefault.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.protobuf.FieldOptions.EditionDefault();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.edition = reader.string();
+                                    break;
+                                }
+                            case 2: {
+                                    message.value = reader.string();
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes an EditionDefault message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.protobuf.FieldOptions.EditionDefault} EditionDefault
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    EditionDefault.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies an EditionDefault message.
+                     * @function verify
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    EditionDefault.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.edition != null && message.hasOwnProperty("edition"))
+                            if (!$util.isString(message.edition))
+                                return "edition: string expected";
+                        if (message.value != null && message.hasOwnProperty("value"))
+                            if (!$util.isString(message.value))
+                                return "value: string expected";
+                        return null;
+                    };
+    
+                    /**
+                     * Creates an EditionDefault message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.protobuf.FieldOptions.EditionDefault} EditionDefault
+                     */
+                    EditionDefault.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.protobuf.FieldOptions.EditionDefault)
+                            return object;
+                        var message = new $root.google.protobuf.FieldOptions.EditionDefault();
+                        if (object.edition != null)
+                            message.edition = String(object.edition);
+                        if (object.value != null)
+                            message.value = String(object.value);
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from an EditionDefault message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {google.protobuf.FieldOptions.EditionDefault} message EditionDefault
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    EditionDefault.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.defaults) {
+                            object.edition = "";
+                            object.value = "";
+                        }
+                        if (message.edition != null && message.hasOwnProperty("edition"))
+                            object.edition = message.edition;
+                        if (message.value != null && message.hasOwnProperty("value"))
+                            object.value = message.value;
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this EditionDefault to JSON.
+                     * @function toJSON
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    EditionDefault.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for EditionDefault
+                     * @function getTypeUrl
+                     * @memberof google.protobuf.FieldOptions.EditionDefault
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    EditionDefault.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.protobuf.FieldOptions.EditionDefault";
+                    };
+    
+                    return EditionDefault;
+                })();
+    
                 return FieldOptions;
             })();
     
@@ -6670,6 +7473,7 @@
                  * Properties of an OneofOptions.
                  * @memberof google.protobuf
                  * @interface IOneofOptions
+                 * @property {google.protobuf.IFeatureSet|null} [features] OneofOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] OneofOptions uninterpretedOption
                  */
     
@@ -6689,6 +7493,14 @@
                                 this[keys[i]] = properties[keys[i]];
                 }
     
+                /**
+                 * OneofOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.OneofOptions
+                 * @instance
+                 */
+                OneofOptions.prototype.features = null;
+    
                 /**
                  * OneofOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -6721,6 +7533,8 @@
                 OneofOptions.encode = function encode(message, writer) {
                     if (!writer)
                         writer = $Writer.create();
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -6758,6 +7572,10 @@
                     while (reader.pos < end) {
                         var tag = reader.uint32();
                         switch (tag >>> 3) {
+                        case 1: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -6799,6 +7617,11 @@
                 OneofOptions.verify = function verify(message) {
                     if (typeof message !== "object" || message === null)
                         return "object expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -6823,6 +7646,11 @@
                     if (object instanceof $root.google.protobuf.OneofOptions)
                         return object;
                     var message = new $root.google.protobuf.OneofOptions();
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.OneofOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.OneofOptions.uninterpretedOption: array expected");
@@ -6851,6 +7679,10 @@
                     var object = {};
                     if (options.arrays || options.defaults)
                         object.uninterpretedOption = [];
+                    if (options.defaults)
+                        object.features = null;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -6897,6 +7729,7 @@
                  * @property {boolean|null} [allowAlias] EnumOptions allowAlias
                  * @property {boolean|null} [deprecated] EnumOptions deprecated
                  * @property {boolean|null} [deprecatedLegacyJsonFieldConflicts] EnumOptions deprecatedLegacyJsonFieldConflicts
+                 * @property {google.protobuf.IFeatureSet|null} [features] EnumOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] EnumOptions uninterpretedOption
                  */
     
@@ -6940,6 +7773,14 @@
                  */
                 EnumOptions.prototype.deprecatedLegacyJsonFieldConflicts = false;
     
+                /**
+                 * EnumOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.EnumOptions
+                 * @instance
+                 */
+                EnumOptions.prototype.features = null;
+    
                 /**
                  * EnumOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -6978,6 +7819,8 @@
                         writer.uint32(/* id 3, wireType 0 =*/24).bool(message.deprecated);
                     if (message.deprecatedLegacyJsonFieldConflicts != null && Object.hasOwnProperty.call(message, "deprecatedLegacyJsonFieldConflicts"))
                         writer.uint32(/* id 6, wireType 0 =*/48).bool(message.deprecatedLegacyJsonFieldConflicts);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 7, wireType 2 =*/58).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -7027,6 +7870,10 @@
                                 message.deprecatedLegacyJsonFieldConflicts = reader.bool();
                                 break;
                             }
+                        case 7: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -7077,6 +7924,11 @@
                     if (message.deprecatedLegacyJsonFieldConflicts != null && message.hasOwnProperty("deprecatedLegacyJsonFieldConflicts"))
                         if (typeof message.deprecatedLegacyJsonFieldConflicts !== "boolean")
                             return "deprecatedLegacyJsonFieldConflicts: boolean expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -7107,6 +7959,11 @@
                         message.deprecated = Boolean(object.deprecated);
                     if (object.deprecatedLegacyJsonFieldConflicts != null)
                         message.deprecatedLegacyJsonFieldConflicts = Boolean(object.deprecatedLegacyJsonFieldConflicts);
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.EnumOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.EnumOptions.uninterpretedOption: array expected");
@@ -7139,6 +7996,7 @@
                         object.allowAlias = false;
                         object.deprecated = false;
                         object.deprecatedLegacyJsonFieldConflicts = false;
+                        object.features = null;
                     }
                     if (message.allowAlias != null && message.hasOwnProperty("allowAlias"))
                         object.allowAlias = message.allowAlias;
@@ -7146,6 +8004,8 @@
                         object.deprecated = message.deprecated;
                     if (message.deprecatedLegacyJsonFieldConflicts != null && message.hasOwnProperty("deprecatedLegacyJsonFieldConflicts"))
                         object.deprecatedLegacyJsonFieldConflicts = message.deprecatedLegacyJsonFieldConflicts;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -7190,6 +8050,8 @@
                  * @memberof google.protobuf
                  * @interface IEnumValueOptions
                  * @property {boolean|null} [deprecated] EnumValueOptions deprecated
+                 * @property {google.protobuf.IFeatureSet|null} [features] EnumValueOptions features
+                 * @property {boolean|null} [debugRedact] EnumValueOptions debugRedact
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] EnumValueOptions uninterpretedOption
                  */
     
@@ -7217,6 +8079,22 @@
                  */
                 EnumValueOptions.prototype.deprecated = false;
     
+                /**
+                 * EnumValueOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.EnumValueOptions
+                 * @instance
+                 */
+                EnumValueOptions.prototype.features = null;
+    
+                /**
+                 * EnumValueOptions debugRedact.
+                 * @member {boolean} debugRedact
+                 * @memberof google.protobuf.EnumValueOptions
+                 * @instance
+                 */
+                EnumValueOptions.prototype.debugRedact = false;
+    
                 /**
                  * EnumValueOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -7251,6 +8129,10 @@
                         writer = $Writer.create();
                     if (message.deprecated != null && Object.hasOwnProperty.call(message, "deprecated"))
                         writer.uint32(/* id 1, wireType 0 =*/8).bool(message.deprecated);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                    if (message.debugRedact != null && Object.hasOwnProperty.call(message, "debugRedact"))
+                        writer.uint32(/* id 3, wireType 0 =*/24).bool(message.debugRedact);
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -7292,6 +8174,14 @@
                                 message.deprecated = reader.bool();
                                 break;
                             }
+                        case 2: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
+                        case 3: {
+                                message.debugRedact = reader.bool();
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -7336,6 +8226,14 @@
                     if (message.deprecated != null && message.hasOwnProperty("deprecated"))
                         if (typeof message.deprecated !== "boolean")
                             return "deprecated: boolean expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
+                    if (message.debugRedact != null && message.hasOwnProperty("debugRedact"))
+                        if (typeof message.debugRedact !== "boolean")
+                            return "debugRedact: boolean expected";
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -7362,6 +8260,13 @@
                     var message = new $root.google.protobuf.EnumValueOptions();
                     if (object.deprecated != null)
                         message.deprecated = Boolean(object.deprecated);
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.EnumValueOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
+                    if (object.debugRedact != null)
+                        message.debugRedact = Boolean(object.debugRedact);
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.EnumValueOptions.uninterpretedOption: array expected");
@@ -7390,10 +8295,17 @@
                     var object = {};
                     if (options.arrays || options.defaults)
                         object.uninterpretedOption = [];
-                    if (options.defaults)
+                    if (options.defaults) {
                         object.deprecated = false;
+                        object.features = null;
+                        object.debugRedact = false;
+                    }
                     if (message.deprecated != null && message.hasOwnProperty("deprecated"))
                         object.deprecated = message.deprecated;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
+                    if (message.debugRedact != null && message.hasOwnProperty("debugRedact"))
+                        object.debugRedact = message.debugRedact;
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -7437,6 +8349,7 @@
                  * Properties of a ServiceOptions.
                  * @memberof google.protobuf
                  * @interface IServiceOptions
+                 * @property {google.protobuf.IFeatureSet|null} [features] ServiceOptions features
                  * @property {boolean|null} [deprecated] ServiceOptions deprecated
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] ServiceOptions uninterpretedOption
                  * @property {string|null} [".google.api.defaultHost"] ServiceOptions .google.api.defaultHost
@@ -7459,6 +8372,14 @@
                                 this[keys[i]] = properties[keys[i]];
                 }
     
+                /**
+                 * ServiceOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.ServiceOptions
+                 * @instance
+                 */
+                ServiceOptions.prototype.features = null;
+    
                 /**
                  * ServiceOptions deprecated.
                  * @member {boolean} deprecated
@@ -7517,6 +8438,8 @@
                         writer = $Writer.create();
                     if (message.deprecated != null && Object.hasOwnProperty.call(message, "deprecated"))
                         writer.uint32(/* id 33, wireType 0 =*/264).bool(message.deprecated);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 34, wireType 2 =*/274).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -7558,6 +8481,10 @@
                     while (reader.pos < end) {
                         var tag = reader.uint32();
                         switch (tag >>> 3) {
+                        case 34: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 33: {
                                 message.deprecated = reader.bool();
                                 break;
@@ -7611,6 +8538,11 @@
                 ServiceOptions.verify = function verify(message) {
                     if (typeof message !== "object" || message === null)
                         return "object expected";
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.deprecated != null && message.hasOwnProperty("deprecated"))
                         if (typeof message.deprecated !== "boolean")
                             return "deprecated: boolean expected";
@@ -7644,6 +8576,11 @@
                     if (object instanceof $root.google.protobuf.ServiceOptions)
                         return object;
                     var message = new $root.google.protobuf.ServiceOptions();
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.ServiceOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.deprecated != null)
                         message.deprecated = Boolean(object.deprecated);
                     if (object.uninterpretedOption) {
@@ -7680,11 +8617,14 @@
                         object.uninterpretedOption = [];
                     if (options.defaults) {
                         object.deprecated = false;
+                        object.features = null;
                         object[".google.api.defaultHost"] = "";
                         object[".google.api.oauthScopes"] = "";
                     }
                     if (message.deprecated != null && message.hasOwnProperty("deprecated"))
                         object.deprecated = message.deprecated;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -7734,6 +8674,7 @@
                  * @interface IMethodOptions
                  * @property {boolean|null} [deprecated] MethodOptions deprecated
                  * @property {google.protobuf.MethodOptions.IdempotencyLevel|null} [idempotencyLevel] MethodOptions idempotencyLevel
+                 * @property {google.protobuf.IFeatureSet|null} [features] MethodOptions features
                  * @property {Array.<google.protobuf.IUninterpretedOption>|null} [uninterpretedOption] MethodOptions uninterpretedOption
                  * @property {google.api.IHttpRule|null} [".google.api.http"] MethodOptions .google.api.http
                  * @property {Array.<string>|null} [".google.api.methodSignature"] MethodOptions .google.api.methodSignature
@@ -7773,6 +8714,14 @@
                  */
                 MethodOptions.prototype.idempotencyLevel = 0;
     
+                /**
+                 * MethodOptions features.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} features
+                 * @memberof google.protobuf.MethodOptions
+                 * @instance
+                 */
+                MethodOptions.prototype.features = null;
+    
                 /**
                  * MethodOptions uninterpretedOption.
                  * @member {Array.<google.protobuf.IUninterpretedOption>} uninterpretedOption
@@ -7833,6 +8782,8 @@
                         writer.uint32(/* id 33, wireType 0 =*/264).bool(message.deprecated);
                     if (message.idempotencyLevel != null && Object.hasOwnProperty.call(message, "idempotencyLevel"))
                         writer.uint32(/* id 34, wireType 0 =*/272).int32(message.idempotencyLevel);
+                    if (message.features != null && Object.hasOwnProperty.call(message, "features"))
+                        $root.google.protobuf.FeatureSet.encode(message.features, writer.uint32(/* id 35, wireType 2 =*/282).fork()).ldelim();
                     if (message.uninterpretedOption != null && message.uninterpretedOption.length)
                         for (var i = 0; i < message.uninterpretedOption.length; ++i)
                             $root.google.protobuf.UninterpretedOption.encode(message.uninterpretedOption[i], writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
@@ -7885,6 +8836,10 @@
                                 message.idempotencyLevel = reader.int32();
                                 break;
                             }
+                        case 35: {
+                                message.features = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
                         case 999: {
                                 if (!(message.uninterpretedOption && message.uninterpretedOption.length))
                                     message.uninterpretedOption = [];
@@ -7952,6 +8907,11 @@
                         case 2:
                             break;
                         }
+                    if (message.features != null && message.hasOwnProperty("features")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.features);
+                        if (error)
+                            return "features." + error;
+                    }
                     if (message.uninterpretedOption != null && message.hasOwnProperty("uninterpretedOption")) {
                         if (!Array.isArray(message.uninterpretedOption))
                             return "uninterpretedOption: array expected";
@@ -8015,6 +8975,11 @@
                         message.idempotencyLevel = 2;
                         break;
                     }
+                    if (object.features != null) {
+                        if (typeof object.features !== "object")
+                            throw TypeError(".google.protobuf.MethodOptions.features: object expected");
+                        message.features = $root.google.protobuf.FeatureSet.fromObject(object.features);
+                    }
                     if (object.uninterpretedOption) {
                         if (!Array.isArray(object.uninterpretedOption))
                             throw TypeError(".google.protobuf.MethodOptions.uninterpretedOption: array expected");
@@ -8065,6 +9030,7 @@
                     if (options.defaults) {
                         object.deprecated = false;
                         object.idempotencyLevel = options.enums === String ? "IDEMPOTENCY_UNKNOWN" : 0;
+                        object.features = null;
                         object[".google.longrunning.operationInfo"] = null;
                         object[".google.api.http"] = null;
                     }
@@ -8072,6 +9038,8 @@
                         object.deprecated = message.deprecated;
                     if (message.idempotencyLevel != null && message.hasOwnProperty("idempotencyLevel"))
                         object.idempotencyLevel = options.enums === String ? $root.google.protobuf.MethodOptions.IdempotencyLevel[message.idempotencyLevel] === undefined ? message.idempotencyLevel : $root.google.protobuf.MethodOptions.IdempotencyLevel[message.idempotencyLevel] : message.idempotencyLevel;
+                    if (message.features != null && message.hasOwnProperty("features"))
+                        object.features = $root.google.protobuf.FeatureSet.toObject(message.features, options);
                     if (message.uninterpretedOption && message.uninterpretedOption.length) {
                         object.uninterpretedOption = [];
                         for (var j = 0; j < message.uninterpretedOption.length; ++j)
@@ -8762,6 +9730,607 @@
                 return UninterpretedOption;
             })();
     
+            protobuf.FeatureSet = (function() {
+    
+                /**
+                 * Properties of a FeatureSet.
+                 * @memberof google.protobuf
+                 * @interface IFeatureSet
+                 * @property {google.protobuf.FeatureSet.FieldPresence|null} [fieldPresence] FeatureSet fieldPresence
+                 * @property {google.protobuf.FeatureSet.EnumType|null} [enumType] FeatureSet enumType
+                 * @property {google.protobuf.FeatureSet.RepeatedFieldEncoding|null} [repeatedFieldEncoding] FeatureSet repeatedFieldEncoding
+                 * @property {google.protobuf.FeatureSet.StringFieldValidation|null} [stringFieldValidation] FeatureSet stringFieldValidation
+                 * @property {google.protobuf.FeatureSet.MessageEncoding|null} [messageEncoding] FeatureSet messageEncoding
+                 * @property {google.protobuf.FeatureSet.JsonFormat|null} [jsonFormat] FeatureSet jsonFormat
+                 * @property {google.protobuf.IFeatureSet|null} [rawFeatures] FeatureSet rawFeatures
+                 */
+    
+                /**
+                 * Constructs a new FeatureSet.
+                 * @memberof google.protobuf
+                 * @classdesc Represents a FeatureSet.
+                 * @implements IFeatureSet
+                 * @constructor
+                 * @param {google.protobuf.IFeatureSet=} [properties] Properties to set
+                 */
+                function FeatureSet(properties) {
+                    if (properties)
+                        for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                            if (properties[keys[i]] != null)
+                                this[keys[i]] = properties[keys[i]];
+                }
+    
+                /**
+                 * FeatureSet fieldPresence.
+                 * @member {google.protobuf.FeatureSet.FieldPresence} fieldPresence
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.fieldPresence = 0;
+    
+                /**
+                 * FeatureSet enumType.
+                 * @member {google.protobuf.FeatureSet.EnumType} enumType
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.enumType = 0;
+    
+                /**
+                 * FeatureSet repeatedFieldEncoding.
+                 * @member {google.protobuf.FeatureSet.RepeatedFieldEncoding} repeatedFieldEncoding
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.repeatedFieldEncoding = 0;
+    
+                /**
+                 * FeatureSet stringFieldValidation.
+                 * @member {google.protobuf.FeatureSet.StringFieldValidation} stringFieldValidation
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.stringFieldValidation = 0;
+    
+                /**
+                 * FeatureSet messageEncoding.
+                 * @member {google.protobuf.FeatureSet.MessageEncoding} messageEncoding
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.messageEncoding = 0;
+    
+                /**
+                 * FeatureSet jsonFormat.
+                 * @member {google.protobuf.FeatureSet.JsonFormat} jsonFormat
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.jsonFormat = 0;
+    
+                /**
+                 * FeatureSet rawFeatures.
+                 * @member {google.protobuf.IFeatureSet|null|undefined} rawFeatures
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 */
+                FeatureSet.prototype.rawFeatures = null;
+    
+                /**
+                 * Creates a new FeatureSet instance using the specified properties.
+                 * @function create
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {google.protobuf.IFeatureSet=} [properties] Properties to set
+                 * @returns {google.protobuf.FeatureSet} FeatureSet instance
+                 */
+                FeatureSet.create = function create(properties) {
+                    return new FeatureSet(properties);
+                };
+    
+                /**
+                 * Encodes the specified FeatureSet message. Does not implicitly {@link google.protobuf.FeatureSet.verify|verify} messages.
+                 * @function encode
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {google.protobuf.IFeatureSet} message FeatureSet message or plain object to encode
+                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                 * @returns {$protobuf.Writer} Writer
+                 */
+                FeatureSet.encode = function encode(message, writer) {
+                    if (!writer)
+                        writer = $Writer.create();
+                    if (message.fieldPresence != null && Object.hasOwnProperty.call(message, "fieldPresence"))
+                        writer.uint32(/* id 1, wireType 0 =*/8).int32(message.fieldPresence);
+                    if (message.enumType != null && Object.hasOwnProperty.call(message, "enumType"))
+                        writer.uint32(/* id 2, wireType 0 =*/16).int32(message.enumType);
+                    if (message.repeatedFieldEncoding != null && Object.hasOwnProperty.call(message, "repeatedFieldEncoding"))
+                        writer.uint32(/* id 3, wireType 0 =*/24).int32(message.repeatedFieldEncoding);
+                    if (message.stringFieldValidation != null && Object.hasOwnProperty.call(message, "stringFieldValidation"))
+                        writer.uint32(/* id 4, wireType 0 =*/32).int32(message.stringFieldValidation);
+                    if (message.messageEncoding != null && Object.hasOwnProperty.call(message, "messageEncoding"))
+                        writer.uint32(/* id 5, wireType 0 =*/40).int32(message.messageEncoding);
+                    if (message.jsonFormat != null && Object.hasOwnProperty.call(message, "jsonFormat"))
+                        writer.uint32(/* id 6, wireType 0 =*/48).int32(message.jsonFormat);
+                    if (message.rawFeatures != null && Object.hasOwnProperty.call(message, "rawFeatures"))
+                        $root.google.protobuf.FeatureSet.encode(message.rawFeatures, writer.uint32(/* id 999, wireType 2 =*/7994).fork()).ldelim();
+                    return writer;
+                };
+    
+                /**
+                 * Encodes the specified FeatureSet message, length delimited. Does not implicitly {@link google.protobuf.FeatureSet.verify|verify} messages.
+                 * @function encodeDelimited
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {google.protobuf.IFeatureSet} message FeatureSet message or plain object to encode
+                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                 * @returns {$protobuf.Writer} Writer
+                 */
+                FeatureSet.encodeDelimited = function encodeDelimited(message, writer) {
+                    return this.encode(message, writer).ldelim();
+                };
+    
+                /**
+                 * Decodes a FeatureSet message from the specified reader or buffer.
+                 * @function decode
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                 * @param {number} [length] Message length if known beforehand
+                 * @returns {google.protobuf.FeatureSet} FeatureSet
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                FeatureSet.decode = function decode(reader, length) {
+                    if (!(reader instanceof $Reader))
+                        reader = $Reader.create(reader);
+                    var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.protobuf.FeatureSet();
+                    while (reader.pos < end) {
+                        var tag = reader.uint32();
+                        switch (tag >>> 3) {
+                        case 1: {
+                                message.fieldPresence = reader.int32();
+                                break;
+                            }
+                        case 2: {
+                                message.enumType = reader.int32();
+                                break;
+                            }
+                        case 3: {
+                                message.repeatedFieldEncoding = reader.int32();
+                                break;
+                            }
+                        case 4: {
+                                message.stringFieldValidation = reader.int32();
+                                break;
+                            }
+                        case 5: {
+                                message.messageEncoding = reader.int32();
+                                break;
+                            }
+                        case 6: {
+                                message.jsonFormat = reader.int32();
+                                break;
+                            }
+                        case 999: {
+                                message.rawFeatures = $root.google.protobuf.FeatureSet.decode(reader, reader.uint32());
+                                break;
+                            }
+                        default:
+                            reader.skipType(tag & 7);
+                            break;
+                        }
+                    }
+                    return message;
+                };
+    
+                /**
+                 * Decodes a FeatureSet message from the specified reader or buffer, length delimited.
+                 * @function decodeDelimited
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                 * @returns {google.protobuf.FeatureSet} FeatureSet
+                 * @throws {Error} If the payload is not a reader or valid buffer
+                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                 */
+                FeatureSet.decodeDelimited = function decodeDelimited(reader) {
+                    if (!(reader instanceof $Reader))
+                        reader = new $Reader(reader);
+                    return this.decode(reader, reader.uint32());
+                };
+    
+                /**
+                 * Verifies a FeatureSet message.
+                 * @function verify
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {Object.<string,*>} message Plain object to verify
+                 * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                 */
+                FeatureSet.verify = function verify(message) {
+                    if (typeof message !== "object" || message === null)
+                        return "object expected";
+                    if (message.fieldPresence != null && message.hasOwnProperty("fieldPresence"))
+                        switch (message.fieldPresence) {
+                        default:
+                            return "fieldPresence: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                        case 3:
+                            break;
+                        }
+                    if (message.enumType != null && message.hasOwnProperty("enumType"))
+                        switch (message.enumType) {
+                        default:
+                            return "enumType: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                            break;
+                        }
+                    if (message.repeatedFieldEncoding != null && message.hasOwnProperty("repeatedFieldEncoding"))
+                        switch (message.repeatedFieldEncoding) {
+                        default:
+                            return "repeatedFieldEncoding: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                            break;
+                        }
+                    if (message.stringFieldValidation != null && message.hasOwnProperty("stringFieldValidation"))
+                        switch (message.stringFieldValidation) {
+                        default:
+                            return "stringFieldValidation: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                        case 3:
+                            break;
+                        }
+                    if (message.messageEncoding != null && message.hasOwnProperty("messageEncoding"))
+                        switch (message.messageEncoding) {
+                        default:
+                            return "messageEncoding: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                            break;
+                        }
+                    if (message.jsonFormat != null && message.hasOwnProperty("jsonFormat"))
+                        switch (message.jsonFormat) {
+                        default:
+                            return "jsonFormat: enum value expected";
+                        case 0:
+                        case 1:
+                        case 2:
+                            break;
+                        }
+                    if (message.rawFeatures != null && message.hasOwnProperty("rawFeatures")) {
+                        var error = $root.google.protobuf.FeatureSet.verify(message.rawFeatures);
+                        if (error)
+                            return "rawFeatures." + error;
+                    }
+                    return null;
+                };
+    
+                /**
+                 * Creates a FeatureSet message from a plain object. Also converts values to their respective internal types.
+                 * @function fromObject
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {Object.<string,*>} object Plain object
+                 * @returns {google.protobuf.FeatureSet} FeatureSet
+                 */
+                FeatureSet.fromObject = function fromObject(object) {
+                    if (object instanceof $root.google.protobuf.FeatureSet)
+                        return object;
+                    var message = new $root.google.protobuf.FeatureSet();
+                    switch (object.fieldPresence) {
+                    default:
+                        if (typeof object.fieldPresence === "number") {
+                            message.fieldPresence = object.fieldPresence;
+                            break;
+                        }
+                        break;
+                    case "FIELD_PRESENCE_UNKNOWN":
+                    case 0:
+                        message.fieldPresence = 0;
+                        break;
+                    case "EXPLICIT":
+                    case 1:
+                        message.fieldPresence = 1;
+                        break;
+                    case "IMPLICIT":
+                    case 2:
+                        message.fieldPresence = 2;
+                        break;
+                    case "LEGACY_REQUIRED":
+                    case 3:
+                        message.fieldPresence = 3;
+                        break;
+                    }
+                    switch (object.enumType) {
+                    default:
+                        if (typeof object.enumType === "number") {
+                            message.enumType = object.enumType;
+                            break;
+                        }
+                        break;
+                    case "ENUM_TYPE_UNKNOWN":
+                    case 0:
+                        message.enumType = 0;
+                        break;
+                    case "OPEN":
+                    case 1:
+                        message.enumType = 1;
+                        break;
+                    case "CLOSED":
+                    case 2:
+                        message.enumType = 2;
+                        break;
+                    }
+                    switch (object.repeatedFieldEncoding) {
+                    default:
+                        if (typeof object.repeatedFieldEncoding === "number") {
+                            message.repeatedFieldEncoding = object.repeatedFieldEncoding;
+                            break;
+                        }
+                        break;
+                    case "REPEATED_FIELD_ENCODING_UNKNOWN":
+                    case 0:
+                        message.repeatedFieldEncoding = 0;
+                        break;
+                    case "PACKED":
+                    case 1:
+                        message.repeatedFieldEncoding = 1;
+                        break;
+                    case "EXPANDED":
+                    case 2:
+                        message.repeatedFieldEncoding = 2;
+                        break;
+                    }
+                    switch (object.stringFieldValidation) {
+                    default:
+                        if (typeof object.stringFieldValidation === "number") {
+                            message.stringFieldValidation = object.stringFieldValidation;
+                            break;
+                        }
+                        break;
+                    case "STRING_FIELD_VALIDATION_UNKNOWN":
+                    case 0:
+                        message.stringFieldValidation = 0;
+                        break;
+                    case "MANDATORY":
+                    case 1:
+                        message.stringFieldValidation = 1;
+                        break;
+                    case "HINT":
+                    case 2:
+                        message.stringFieldValidation = 2;
+                        break;
+                    case "NONE":
+                    case 3:
+                        message.stringFieldValidation = 3;
+                        break;
+                    }
+                    switch (object.messageEncoding) {
+                    default:
+                        if (typeof object.messageEncoding === "number") {
+                            message.messageEncoding = object.messageEncoding;
+                            break;
+                        }
+                        break;
+                    case "MESSAGE_ENCODING_UNKNOWN":
+                    case 0:
+                        message.messageEncoding = 0;
+                        break;
+                    case "LENGTH_PREFIXED":
+                    case 1:
+                        message.messageEncoding = 1;
+                        break;
+                    case "DELIMITED":
+                    case 2:
+                        message.messageEncoding = 2;
+                        break;
+                    }
+                    switch (object.jsonFormat) {
+                    default:
+                        if (typeof object.jsonFormat === "number") {
+                            message.jsonFormat = object.jsonFormat;
+                            break;
+                        }
+                        break;
+                    case "JSON_FORMAT_UNKNOWN":
+                    case 0:
+                        message.jsonFormat = 0;
+                        break;
+                    case "ALLOW":
+                    case 1:
+                        message.jsonFormat = 1;
+                        break;
+                    case "LEGACY_BEST_EFFORT":
+                    case 2:
+                        message.jsonFormat = 2;
+                        break;
+                    }
+                    if (object.rawFeatures != null) {
+                        if (typeof object.rawFeatures !== "object")
+                            throw TypeError(".google.protobuf.FeatureSet.rawFeatures: object expected");
+                        message.rawFeatures = $root.google.protobuf.FeatureSet.fromObject(object.rawFeatures);
+                    }
+                    return message;
+                };
+    
+                /**
+                 * Creates a plain object from a FeatureSet message. Also converts values to other types if specified.
+                 * @function toObject
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {google.protobuf.FeatureSet} message FeatureSet
+                 * @param {$protobuf.IConversionOptions} [options] Conversion options
+                 * @returns {Object.<string,*>} Plain object
+                 */
+                FeatureSet.toObject = function toObject(message, options) {
+                    if (!options)
+                        options = {};
+                    var object = {};
+                    if (options.defaults) {
+                        object.fieldPresence = options.enums === String ? "FIELD_PRESENCE_UNKNOWN" : 0;
+                        object.enumType = options.enums === String ? "ENUM_TYPE_UNKNOWN" : 0;
+                        object.repeatedFieldEncoding = options.enums === String ? "REPEATED_FIELD_ENCODING_UNKNOWN" : 0;
+                        object.stringFieldValidation = options.enums === String ? "STRING_FIELD_VALIDATION_UNKNOWN" : 0;
+                        object.messageEncoding = options.enums === String ? "MESSAGE_ENCODING_UNKNOWN" : 0;
+                        object.jsonFormat = options.enums === String ? "JSON_FORMAT_UNKNOWN" : 0;
+                        object.rawFeatures = null;
+                    }
+                    if (message.fieldPresence != null && message.hasOwnProperty("fieldPresence"))
+                        object.fieldPresence = options.enums === String ? $root.google.protobuf.FeatureSet.FieldPresence[message.fieldPresence] === undefined ? message.fieldPresence : $root.google.protobuf.FeatureSet.FieldPresence[message.fieldPresence] : message.fieldPresence;
+                    if (message.enumType != null && message.hasOwnProperty("enumType"))
+                        object.enumType = options.enums === String ? $root.google.protobuf.FeatureSet.EnumType[message.enumType] === undefined ? message.enumType : $root.google.protobuf.FeatureSet.EnumType[message.enumType] : message.enumType;
+                    if (message.repeatedFieldEncoding != null && message.hasOwnProperty("repeatedFieldEncoding"))
+                        object.repeatedFieldEncoding = options.enums === String ? $root.google.protobuf.FeatureSet.RepeatedFieldEncoding[message.repeatedFieldEncoding] === undefined ? message.repeatedFieldEncoding : $root.google.protobuf.FeatureSet.RepeatedFieldEncoding[message.repeatedFieldEncoding] : message.repeatedFieldEncoding;
+                    if (message.stringFieldValidation != null && message.hasOwnProperty("stringFieldValidation"))
+                        object.stringFieldValidation = options.enums === String ? $root.google.protobuf.FeatureSet.StringFieldValidation[message.stringFieldValidation] === undefined ? message.stringFieldValidation : $root.google.protobuf.FeatureSet.StringFieldValidation[message.stringFieldValidation] : message.stringFieldValidation;
+                    if (message.messageEncoding != null && message.hasOwnProperty("messageEncoding"))
+                        object.messageEncoding = options.enums === String ? $root.google.protobuf.FeatureSet.MessageEncoding[message.messageEncoding] === undefined ? message.messageEncoding : $root.google.protobuf.FeatureSet.MessageEncoding[message.messageEncoding] : message.messageEncoding;
+                    if (message.jsonFormat != null && message.hasOwnProperty("jsonFormat"))
+                        object.jsonFormat = options.enums === String ? $root.google.protobuf.FeatureSet.JsonFormat[message.jsonFormat] === undefined ? message.jsonFormat : $root.google.protobuf.FeatureSet.JsonFormat[message.jsonFormat] : message.jsonFormat;
+                    if (message.rawFeatures != null && message.hasOwnProperty("rawFeatures"))
+                        object.rawFeatures = $root.google.protobuf.FeatureSet.toObject(message.rawFeatures, options);
+                    return object;
+                };
+    
+                /**
+                 * Converts this FeatureSet to JSON.
+                 * @function toJSON
+                 * @memberof google.protobuf.FeatureSet
+                 * @instance
+                 * @returns {Object.<string,*>} JSON object
+                 */
+                FeatureSet.prototype.toJSON = function toJSON() {
+                    return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                };
+    
+                /**
+                 * Gets the default type url for FeatureSet
+                 * @function getTypeUrl
+                 * @memberof google.protobuf.FeatureSet
+                 * @static
+                 * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                 * @returns {string} The default type url
+                 */
+                FeatureSet.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    if (typeUrlPrefix === undefined) {
+                        typeUrlPrefix = "type.googleapis.com";
+                    }
+                    return typeUrlPrefix + "/google.protobuf.FeatureSet";
+                };
+    
+                /**
+                 * FieldPresence enum.
+                 * @name google.protobuf.FeatureSet.FieldPresence
+                 * @enum {number}
+                 * @property {number} FIELD_PRESENCE_UNKNOWN=0 FIELD_PRESENCE_UNKNOWN value
+                 * @property {number} EXPLICIT=1 EXPLICIT value
+                 * @property {number} IMPLICIT=2 IMPLICIT value
+                 * @property {number} LEGACY_REQUIRED=3 LEGACY_REQUIRED value
+                 */
+                FeatureSet.FieldPresence = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "FIELD_PRESENCE_UNKNOWN"] = 0;
+                    values[valuesById[1] = "EXPLICIT"] = 1;
+                    values[valuesById[2] = "IMPLICIT"] = 2;
+                    values[valuesById[3] = "LEGACY_REQUIRED"] = 3;
+                    return values;
+                })();
+    
+                /**
+                 * EnumType enum.
+                 * @name google.protobuf.FeatureSet.EnumType
+                 * @enum {number}
+                 * @property {number} ENUM_TYPE_UNKNOWN=0 ENUM_TYPE_UNKNOWN value
+                 * @property {number} OPEN=1 OPEN value
+                 * @property {number} CLOSED=2 CLOSED value
+                 */
+                FeatureSet.EnumType = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "ENUM_TYPE_UNKNOWN"] = 0;
+                    values[valuesById[1] = "OPEN"] = 1;
+                    values[valuesById[2] = "CLOSED"] = 2;
+                    return values;
+                })();
+    
+                /**
+                 * RepeatedFieldEncoding enum.
+                 * @name google.protobuf.FeatureSet.RepeatedFieldEncoding
+                 * @enum {number}
+                 * @property {number} REPEATED_FIELD_ENCODING_UNKNOWN=0 REPEATED_FIELD_ENCODING_UNKNOWN value
+                 * @property {number} PACKED=1 PACKED value
+                 * @property {number} EXPANDED=2 EXPANDED value
+                 */
+                FeatureSet.RepeatedFieldEncoding = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "REPEATED_FIELD_ENCODING_UNKNOWN"] = 0;
+                    values[valuesById[1] = "PACKED"] = 1;
+                    values[valuesById[2] = "EXPANDED"] = 2;
+                    return values;
+                })();
+    
+                /**
+                 * StringFieldValidation enum.
+                 * @name google.protobuf.FeatureSet.StringFieldValidation
+                 * @enum {number}
+                 * @property {number} STRING_FIELD_VALIDATION_UNKNOWN=0 STRING_FIELD_VALIDATION_UNKNOWN value
+                 * @property {number} MANDATORY=1 MANDATORY value
+                 * @property {number} HINT=2 HINT value
+                 * @property {number} NONE=3 NONE value
+                 */
+                FeatureSet.StringFieldValidation = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "STRING_FIELD_VALIDATION_UNKNOWN"] = 0;
+                    values[valuesById[1] = "MANDATORY"] = 1;
+                    values[valuesById[2] = "HINT"] = 2;
+                    values[valuesById[3] = "NONE"] = 3;
+                    return values;
+                })();
+    
+                /**
+                 * MessageEncoding enum.
+                 * @name google.protobuf.FeatureSet.MessageEncoding
+                 * @enum {number}
+                 * @property {number} MESSAGE_ENCODING_UNKNOWN=0 MESSAGE_ENCODING_UNKNOWN value
+                 * @property {number} LENGTH_PREFIXED=1 LENGTH_PREFIXED value
+                 * @property {number} DELIMITED=2 DELIMITED value
+                 */
+                FeatureSet.MessageEncoding = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "MESSAGE_ENCODING_UNKNOWN"] = 0;
+                    values[valuesById[1] = "LENGTH_PREFIXED"] = 1;
+                    values[valuesById[2] = "DELIMITED"] = 2;
+                    return values;
+                })();
+    
+                /**
+                 * JsonFormat enum.
+                 * @name google.protobuf.FeatureSet.JsonFormat
+                 * @enum {number}
+                 * @property {number} JSON_FORMAT_UNKNOWN=0 JSON_FORMAT_UNKNOWN value
+                 * @property {number} ALLOW=1 ALLOW value
+                 * @property {number} LEGACY_BEST_EFFORT=2 LEGACY_BEST_EFFORT value
+                 */
+                FeatureSet.JsonFormat = (function() {
+                    var valuesById = {}, values = Object.create(valuesById);
+                    values[valuesById[0] = "JSON_FORMAT_UNKNOWN"] = 0;
+                    values[valuesById[1] = "ALLOW"] = 1;
+                    values[valuesById[2] = "LEGACY_BEST_EFFORT"] = 2;
+                    return values;
+                })();
+    
+                return FeatureSet;
+            })();
+    
             protobuf.SourceCodeInfo = (function() {
     
                 /**
@@ -29272,6 +30841,787 @@
                             return InstanceConfig;
                         })();
     
+                        v1.AutoscalingConfig = (function() {
+    
+                            /**
+                             * Properties of an AutoscalingConfig.
+                             * @memberof google.spanner.admin.instance.v1
+                             * @interface IAutoscalingConfig
+                             * @property {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits|null} [autoscalingLimits] AutoscalingConfig autoscalingLimits
+                             * @property {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets|null} [autoscalingTargets] AutoscalingConfig autoscalingTargets
+                             */
+    
+                            /**
+                             * Constructs a new AutoscalingConfig.
+                             * @memberof google.spanner.admin.instance.v1
+                             * @classdesc Represents an AutoscalingConfig.
+                             * @implements IAutoscalingConfig
+                             * @constructor
+                             * @param {google.spanner.admin.instance.v1.IAutoscalingConfig=} [properties] Properties to set
+                             */
+                            function AutoscalingConfig(properties) {
+                                if (properties)
+                                    for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                        if (properties[keys[i]] != null)
+                                            this[keys[i]] = properties[keys[i]];
+                            }
+    
+                            /**
+                             * AutoscalingConfig autoscalingLimits.
+                             * @member {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits|null|undefined} autoscalingLimits
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @instance
+                             */
+                            AutoscalingConfig.prototype.autoscalingLimits = null;
+    
+                            /**
+                             * AutoscalingConfig autoscalingTargets.
+                             * @member {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets|null|undefined} autoscalingTargets
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @instance
+                             */
+                            AutoscalingConfig.prototype.autoscalingTargets = null;
+    
+                            /**
+                             * Creates a new AutoscalingConfig instance using the specified properties.
+                             * @function create
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {google.spanner.admin.instance.v1.IAutoscalingConfig=} [properties] Properties to set
+                             * @returns {google.spanner.admin.instance.v1.AutoscalingConfig} AutoscalingConfig instance
+                             */
+                            AutoscalingConfig.create = function create(properties) {
+                                return new AutoscalingConfig(properties);
+                            };
+    
+                            /**
+                             * Encodes the specified AutoscalingConfig message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.verify|verify} messages.
+                             * @function encode
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {google.spanner.admin.instance.v1.IAutoscalingConfig} message AutoscalingConfig message or plain object to encode
+                             * @param {$protobuf.Writer} [writer] Writer to encode to
+                             * @returns {$protobuf.Writer} Writer
+                             */
+                            AutoscalingConfig.encode = function encode(message, writer) {
+                                if (!writer)
+                                    writer = $Writer.create();
+                                if (message.autoscalingLimits != null && Object.hasOwnProperty.call(message, "autoscalingLimits"))
+                                    $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.encode(message.autoscalingLimits, writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                                if (message.autoscalingTargets != null && Object.hasOwnProperty.call(message, "autoscalingTargets"))
+                                    $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.encode(message.autoscalingTargets, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                                return writer;
+                            };
+    
+                            /**
+                             * Encodes the specified AutoscalingConfig message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.verify|verify} messages.
+                             * @function encodeDelimited
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {google.spanner.admin.instance.v1.IAutoscalingConfig} message AutoscalingConfig message or plain object to encode
+                             * @param {$protobuf.Writer} [writer] Writer to encode to
+                             * @returns {$protobuf.Writer} Writer
+                             */
+                            AutoscalingConfig.encodeDelimited = function encodeDelimited(message, writer) {
+                                return this.encode(message, writer).ldelim();
+                            };
+    
+                            /**
+                             * Decodes an AutoscalingConfig message from the specified reader or buffer.
+                             * @function decode
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                             * @param {number} [length] Message length if known beforehand
+                             * @returns {google.spanner.admin.instance.v1.AutoscalingConfig} AutoscalingConfig
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            AutoscalingConfig.decode = function decode(reader, length) {
+                                if (!(reader instanceof $Reader))
+                                    reader = $Reader.create(reader);
+                                var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig();
+                                while (reader.pos < end) {
+                                    var tag = reader.uint32();
+                                    switch (tag >>> 3) {
+                                    case 1: {
+                                            message.autoscalingLimits = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.decode(reader, reader.uint32());
+                                            break;
+                                        }
+                                    case 2: {
+                                            message.autoscalingTargets = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.decode(reader, reader.uint32());
+                                            break;
+                                        }
+                                    default:
+                                        reader.skipType(tag & 7);
+                                        break;
+                                    }
+                                }
+                                return message;
+                            };
+    
+                            /**
+                             * Decodes an AutoscalingConfig message from the specified reader or buffer, length delimited.
+                             * @function decodeDelimited
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                             * @returns {google.spanner.admin.instance.v1.AutoscalingConfig} AutoscalingConfig
+                             * @throws {Error} If the payload is not a reader or valid buffer
+                             * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                             */
+                            AutoscalingConfig.decodeDelimited = function decodeDelimited(reader) {
+                                if (!(reader instanceof $Reader))
+                                    reader = new $Reader(reader);
+                                return this.decode(reader, reader.uint32());
+                            };
+    
+                            /**
+                             * Verifies an AutoscalingConfig message.
+                             * @function verify
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {Object.<string,*>} message Plain object to verify
+                             * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                             */
+                            AutoscalingConfig.verify = function verify(message) {
+                                if (typeof message !== "object" || message === null)
+                                    return "object expected";
+                                if (message.autoscalingLimits != null && message.hasOwnProperty("autoscalingLimits")) {
+                                    var error = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.verify(message.autoscalingLimits);
+                                    if (error)
+                                        return "autoscalingLimits." + error;
+                                }
+                                if (message.autoscalingTargets != null && message.hasOwnProperty("autoscalingTargets")) {
+                                    var error = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.verify(message.autoscalingTargets);
+                                    if (error)
+                                        return "autoscalingTargets." + error;
+                                }
+                                return null;
+                            };
+    
+                            /**
+                             * Creates an AutoscalingConfig message from a plain object. Also converts values to their respective internal types.
+                             * @function fromObject
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {Object.<string,*>} object Plain object
+                             * @returns {google.spanner.admin.instance.v1.AutoscalingConfig} AutoscalingConfig
+                             */
+                            AutoscalingConfig.fromObject = function fromObject(object) {
+                                if (object instanceof $root.google.spanner.admin.instance.v1.AutoscalingConfig)
+                                    return object;
+                                var message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig();
+                                if (object.autoscalingLimits != null) {
+                                    if (typeof object.autoscalingLimits !== "object")
+                                        throw TypeError(".google.spanner.admin.instance.v1.AutoscalingConfig.autoscalingLimits: object expected");
+                                    message.autoscalingLimits = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.fromObject(object.autoscalingLimits);
+                                }
+                                if (object.autoscalingTargets != null) {
+                                    if (typeof object.autoscalingTargets !== "object")
+                                        throw TypeError(".google.spanner.admin.instance.v1.AutoscalingConfig.autoscalingTargets: object expected");
+                                    message.autoscalingTargets = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.fromObject(object.autoscalingTargets);
+                                }
+                                return message;
+                            };
+    
+                            /**
+                             * Creates a plain object from an AutoscalingConfig message. Also converts values to other types if specified.
+                             * @function toObject
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {google.spanner.admin.instance.v1.AutoscalingConfig} message AutoscalingConfig
+                             * @param {$protobuf.IConversionOptions} [options] Conversion options
+                             * @returns {Object.<string,*>} Plain object
+                             */
+                            AutoscalingConfig.toObject = function toObject(message, options) {
+                                if (!options)
+                                    options = {};
+                                var object = {};
+                                if (options.defaults) {
+                                    object.autoscalingLimits = null;
+                                    object.autoscalingTargets = null;
+                                }
+                                if (message.autoscalingLimits != null && message.hasOwnProperty("autoscalingLimits"))
+                                    object.autoscalingLimits = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.toObject(message.autoscalingLimits, options);
+                                if (message.autoscalingTargets != null && message.hasOwnProperty("autoscalingTargets"))
+                                    object.autoscalingTargets = $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.toObject(message.autoscalingTargets, options);
+                                return object;
+                            };
+    
+                            /**
+                             * Converts this AutoscalingConfig to JSON.
+                             * @function toJSON
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @instance
+                             * @returns {Object.<string,*>} JSON object
+                             */
+                            AutoscalingConfig.prototype.toJSON = function toJSON() {
+                                return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                            };
+    
+                            /**
+                             * Gets the default type url for AutoscalingConfig
+                             * @function getTypeUrl
+                             * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                             * @static
+                             * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                             * @returns {string} The default type url
+                             */
+                            AutoscalingConfig.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                                if (typeUrlPrefix === undefined) {
+                                    typeUrlPrefix = "type.googleapis.com";
+                                }
+                                return typeUrlPrefix + "/google.spanner.admin.instance.v1.AutoscalingConfig";
+                            };
+    
+                            AutoscalingConfig.AutoscalingLimits = (function() {
+    
+                                /**
+                                 * Properties of an AutoscalingLimits.
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                                 * @interface IAutoscalingLimits
+                                 * @property {number|null} [minNodes] AutoscalingLimits minNodes
+                                 * @property {number|null} [minProcessingUnits] AutoscalingLimits minProcessingUnits
+                                 * @property {number|null} [maxNodes] AutoscalingLimits maxNodes
+                                 * @property {number|null} [maxProcessingUnits] AutoscalingLimits maxProcessingUnits
+                                 */
+    
+                                /**
+                                 * Constructs a new AutoscalingLimits.
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                                 * @classdesc Represents an AutoscalingLimits.
+                                 * @implements IAutoscalingLimits
+                                 * @constructor
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits=} [properties] Properties to set
+                                 */
+                                function AutoscalingLimits(properties) {
+                                    if (properties)
+                                        for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                            if (properties[keys[i]] != null)
+                                                this[keys[i]] = properties[keys[i]];
+                                }
+    
+                                /**
+                                 * AutoscalingLimits minNodes.
+                                 * @member {number|null|undefined} minNodes
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                AutoscalingLimits.prototype.minNodes = null;
+    
+                                /**
+                                 * AutoscalingLimits minProcessingUnits.
+                                 * @member {number|null|undefined} minProcessingUnits
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                AutoscalingLimits.prototype.minProcessingUnits = null;
+    
+                                /**
+                                 * AutoscalingLimits maxNodes.
+                                 * @member {number|null|undefined} maxNodes
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                AutoscalingLimits.prototype.maxNodes = null;
+    
+                                /**
+                                 * AutoscalingLimits maxProcessingUnits.
+                                 * @member {number|null|undefined} maxProcessingUnits
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                AutoscalingLimits.prototype.maxProcessingUnits = null;
+    
+                                // OneOf field names bound to virtual getters and setters
+                                var $oneOfFields;
+    
+                                /**
+                                 * AutoscalingLimits minLimit.
+                                 * @member {"minNodes"|"minProcessingUnits"|undefined} minLimit
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                Object.defineProperty(AutoscalingLimits.prototype, "minLimit", {
+                                    get: $util.oneOfGetter($oneOfFields = ["minNodes", "minProcessingUnits"]),
+                                    set: $util.oneOfSetter($oneOfFields)
+                                });
+    
+                                /**
+                                 * AutoscalingLimits maxLimit.
+                                 * @member {"maxNodes"|"maxProcessingUnits"|undefined} maxLimit
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 */
+                                Object.defineProperty(AutoscalingLimits.prototype, "maxLimit", {
+                                    get: $util.oneOfGetter($oneOfFields = ["maxNodes", "maxProcessingUnits"]),
+                                    set: $util.oneOfSetter($oneOfFields)
+                                });
+    
+                                /**
+                                 * Creates a new AutoscalingLimits instance using the specified properties.
+                                 * @function create
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits=} [properties] Properties to set
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits} AutoscalingLimits instance
+                                 */
+                                AutoscalingLimits.create = function create(properties) {
+                                    return new AutoscalingLimits(properties);
+                                };
+    
+                                /**
+                                 * Encodes the specified AutoscalingLimits message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.verify|verify} messages.
+                                 * @function encode
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits} message AutoscalingLimits message or plain object to encode
+                                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                                 * @returns {$protobuf.Writer} Writer
+                                 */
+                                AutoscalingLimits.encode = function encode(message, writer) {
+                                    if (!writer)
+                                        writer = $Writer.create();
+                                    if (message.minNodes != null && Object.hasOwnProperty.call(message, "minNodes"))
+                                        writer.uint32(/* id 1, wireType 0 =*/8).int32(message.minNodes);
+                                    if (message.minProcessingUnits != null && Object.hasOwnProperty.call(message, "minProcessingUnits"))
+                                        writer.uint32(/* id 2, wireType 0 =*/16).int32(message.minProcessingUnits);
+                                    if (message.maxNodes != null && Object.hasOwnProperty.call(message, "maxNodes"))
+                                        writer.uint32(/* id 3, wireType 0 =*/24).int32(message.maxNodes);
+                                    if (message.maxProcessingUnits != null && Object.hasOwnProperty.call(message, "maxProcessingUnits"))
+                                        writer.uint32(/* id 4, wireType 0 =*/32).int32(message.maxProcessingUnits);
+                                    return writer;
+                                };
+    
+                                /**
+                                 * Encodes the specified AutoscalingLimits message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits.verify|verify} messages.
+                                 * @function encodeDelimited
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingLimits} message AutoscalingLimits message or plain object to encode
+                                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                                 * @returns {$protobuf.Writer} Writer
+                                 */
+                                AutoscalingLimits.encodeDelimited = function encodeDelimited(message, writer) {
+                                    return this.encode(message, writer).ldelim();
+                                };
+    
+                                /**
+                                 * Decodes an AutoscalingLimits message from the specified reader or buffer.
+                                 * @function decode
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                                 * @param {number} [length] Message length if known beforehand
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits} AutoscalingLimits
+                                 * @throws {Error} If the payload is not a reader or valid buffer
+                                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                                 */
+                                AutoscalingLimits.decode = function decode(reader, length) {
+                                    if (!(reader instanceof $Reader))
+                                        reader = $Reader.create(reader);
+                                    var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits();
+                                    while (reader.pos < end) {
+                                        var tag = reader.uint32();
+                                        switch (tag >>> 3) {
+                                        case 1: {
+                                                message.minNodes = reader.int32();
+                                                break;
+                                            }
+                                        case 2: {
+                                                message.minProcessingUnits = reader.int32();
+                                                break;
+                                            }
+                                        case 3: {
+                                                message.maxNodes = reader.int32();
+                                                break;
+                                            }
+                                        case 4: {
+                                                message.maxProcessingUnits = reader.int32();
+                                                break;
+                                            }
+                                        default:
+                                            reader.skipType(tag & 7);
+                                            break;
+                                        }
+                                    }
+                                    return message;
+                                };
+    
+                                /**
+                                 * Decodes an AutoscalingLimits message from the specified reader or buffer, length delimited.
+                                 * @function decodeDelimited
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits} AutoscalingLimits
+                                 * @throws {Error} If the payload is not a reader or valid buffer
+                                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                                 */
+                                AutoscalingLimits.decodeDelimited = function decodeDelimited(reader) {
+                                    if (!(reader instanceof $Reader))
+                                        reader = new $Reader(reader);
+                                    return this.decode(reader, reader.uint32());
+                                };
+    
+                                /**
+                                 * Verifies an AutoscalingLimits message.
+                                 * @function verify
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {Object.<string,*>} message Plain object to verify
+                                 * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                                 */
+                                AutoscalingLimits.verify = function verify(message) {
+                                    if (typeof message !== "object" || message === null)
+                                        return "object expected";
+                                    var properties = {};
+                                    if (message.minNodes != null && message.hasOwnProperty("minNodes")) {
+                                        properties.minLimit = 1;
+                                        if (!$util.isInteger(message.minNodes))
+                                            return "minNodes: integer expected";
+                                    }
+                                    if (message.minProcessingUnits != null && message.hasOwnProperty("minProcessingUnits")) {
+                                        if (properties.minLimit === 1)
+                                            return "minLimit: multiple values";
+                                        properties.minLimit = 1;
+                                        if (!$util.isInteger(message.minProcessingUnits))
+                                            return "minProcessingUnits: integer expected";
+                                    }
+                                    if (message.maxNodes != null && message.hasOwnProperty("maxNodes")) {
+                                        properties.maxLimit = 1;
+                                        if (!$util.isInteger(message.maxNodes))
+                                            return "maxNodes: integer expected";
+                                    }
+                                    if (message.maxProcessingUnits != null && message.hasOwnProperty("maxProcessingUnits")) {
+                                        if (properties.maxLimit === 1)
+                                            return "maxLimit: multiple values";
+                                        properties.maxLimit = 1;
+                                        if (!$util.isInteger(message.maxProcessingUnits))
+                                            return "maxProcessingUnits: integer expected";
+                                    }
+                                    return null;
+                                };
+    
+                                /**
+                                 * Creates an AutoscalingLimits message from a plain object. Also converts values to their respective internal types.
+                                 * @function fromObject
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {Object.<string,*>} object Plain object
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits} AutoscalingLimits
+                                 */
+                                AutoscalingLimits.fromObject = function fromObject(object) {
+                                    if (object instanceof $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits)
+                                        return object;
+                                    var message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits();
+                                    if (object.minNodes != null)
+                                        message.minNodes = object.minNodes | 0;
+                                    if (object.minProcessingUnits != null)
+                                        message.minProcessingUnits = object.minProcessingUnits | 0;
+                                    if (object.maxNodes != null)
+                                        message.maxNodes = object.maxNodes | 0;
+                                    if (object.maxProcessingUnits != null)
+                                        message.maxProcessingUnits = object.maxProcessingUnits | 0;
+                                    return message;
+                                };
+    
+                                /**
+                                 * Creates a plain object from an AutoscalingLimits message. Also converts values to other types if specified.
+                                 * @function toObject
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits} message AutoscalingLimits
+                                 * @param {$protobuf.IConversionOptions} [options] Conversion options
+                                 * @returns {Object.<string,*>} Plain object
+                                 */
+                                AutoscalingLimits.toObject = function toObject(message, options) {
+                                    if (!options)
+                                        options = {};
+                                    var object = {};
+                                    if (message.minNodes != null && message.hasOwnProperty("minNodes")) {
+                                        object.minNodes = message.minNodes;
+                                        if (options.oneofs)
+                                            object.minLimit = "minNodes";
+                                    }
+                                    if (message.minProcessingUnits != null && message.hasOwnProperty("minProcessingUnits")) {
+                                        object.minProcessingUnits = message.minProcessingUnits;
+                                        if (options.oneofs)
+                                            object.minLimit = "minProcessingUnits";
+                                    }
+                                    if (message.maxNodes != null && message.hasOwnProperty("maxNodes")) {
+                                        object.maxNodes = message.maxNodes;
+                                        if (options.oneofs)
+                                            object.maxLimit = "maxNodes";
+                                    }
+                                    if (message.maxProcessingUnits != null && message.hasOwnProperty("maxProcessingUnits")) {
+                                        object.maxProcessingUnits = message.maxProcessingUnits;
+                                        if (options.oneofs)
+                                            object.maxLimit = "maxProcessingUnits";
+                                    }
+                                    return object;
+                                };
+    
+                                /**
+                                 * Converts this AutoscalingLimits to JSON.
+                                 * @function toJSON
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @instance
+                                 * @returns {Object.<string,*>} JSON object
+                                 */
+                                AutoscalingLimits.prototype.toJSON = function toJSON() {
+                                    return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                                };
+    
+                                /**
+                                 * Gets the default type url for AutoscalingLimits
+                                 * @function getTypeUrl
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits
+                                 * @static
+                                 * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                                 * @returns {string} The default type url
+                                 */
+                                AutoscalingLimits.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                                    if (typeUrlPrefix === undefined) {
+                                        typeUrlPrefix = "type.googleapis.com";
+                                    }
+                                    return typeUrlPrefix + "/google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingLimits";
+                                };
+    
+                                return AutoscalingLimits;
+                            })();
+    
+                            AutoscalingConfig.AutoscalingTargets = (function() {
+    
+                                /**
+                                 * Properties of an AutoscalingTargets.
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                                 * @interface IAutoscalingTargets
+                                 * @property {number|null} [highPriorityCpuUtilizationPercent] AutoscalingTargets highPriorityCpuUtilizationPercent
+                                 * @property {number|null} [storageUtilizationPercent] AutoscalingTargets storageUtilizationPercent
+                                 */
+    
+                                /**
+                                 * Constructs a new AutoscalingTargets.
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig
+                                 * @classdesc Represents an AutoscalingTargets.
+                                 * @implements IAutoscalingTargets
+                                 * @constructor
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets=} [properties] Properties to set
+                                 */
+                                function AutoscalingTargets(properties) {
+                                    if (properties)
+                                        for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                            if (properties[keys[i]] != null)
+                                                this[keys[i]] = properties[keys[i]];
+                                }
+    
+                                /**
+                                 * AutoscalingTargets highPriorityCpuUtilizationPercent.
+                                 * @member {number} highPriorityCpuUtilizationPercent
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @instance
+                                 */
+                                AutoscalingTargets.prototype.highPriorityCpuUtilizationPercent = 0;
+    
+                                /**
+                                 * AutoscalingTargets storageUtilizationPercent.
+                                 * @member {number} storageUtilizationPercent
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @instance
+                                 */
+                                AutoscalingTargets.prototype.storageUtilizationPercent = 0;
+    
+                                /**
+                                 * Creates a new AutoscalingTargets instance using the specified properties.
+                                 * @function create
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets=} [properties] Properties to set
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets} AutoscalingTargets instance
+                                 */
+                                AutoscalingTargets.create = function create(properties) {
+                                    return new AutoscalingTargets(properties);
+                                };
+    
+                                /**
+                                 * Encodes the specified AutoscalingTargets message. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.verify|verify} messages.
+                                 * @function encode
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets} message AutoscalingTargets message or plain object to encode
+                                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                                 * @returns {$protobuf.Writer} Writer
+                                 */
+                                AutoscalingTargets.encode = function encode(message, writer) {
+                                    if (!writer)
+                                        writer = $Writer.create();
+                                    if (message.highPriorityCpuUtilizationPercent != null && Object.hasOwnProperty.call(message, "highPriorityCpuUtilizationPercent"))
+                                        writer.uint32(/* id 1, wireType 0 =*/8).int32(message.highPriorityCpuUtilizationPercent);
+                                    if (message.storageUtilizationPercent != null && Object.hasOwnProperty.call(message, "storageUtilizationPercent"))
+                                        writer.uint32(/* id 2, wireType 0 =*/16).int32(message.storageUtilizationPercent);
+                                    return writer;
+                                };
+    
+                                /**
+                                 * Encodes the specified AutoscalingTargets message, length delimited. Does not implicitly {@link google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets.verify|verify} messages.
+                                 * @function encodeDelimited
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.IAutoscalingTargets} message AutoscalingTargets message or plain object to encode
+                                 * @param {$protobuf.Writer} [writer] Writer to encode to
+                                 * @returns {$protobuf.Writer} Writer
+                                 */
+                                AutoscalingTargets.encodeDelimited = function encodeDelimited(message, writer) {
+                                    return this.encode(message, writer).ldelim();
+                                };
+    
+                                /**
+                                 * Decodes an AutoscalingTargets message from the specified reader or buffer.
+                                 * @function decode
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                                 * @param {number} [length] Message length if known beforehand
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets} AutoscalingTargets
+                                 * @throws {Error} If the payload is not a reader or valid buffer
+                                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                                 */
+                                AutoscalingTargets.decode = function decode(reader, length) {
+                                    if (!(reader instanceof $Reader))
+                                        reader = $Reader.create(reader);
+                                    var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets();
+                                    while (reader.pos < end) {
+                                        var tag = reader.uint32();
+                                        switch (tag >>> 3) {
+                                        case 1: {
+                                                message.highPriorityCpuUtilizationPercent = reader.int32();
+                                                break;
+                                            }
+                                        case 2: {
+                                                message.storageUtilizationPercent = reader.int32();
+                                                break;
+                                            }
+                                        default:
+                                            reader.skipType(tag & 7);
+                                            break;
+                                        }
+                                    }
+                                    return message;
+                                };
+    
+                                /**
+                                 * Decodes an AutoscalingTargets message from the specified reader or buffer, length delimited.
+                                 * @function decodeDelimited
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets} AutoscalingTargets
+                                 * @throws {Error} If the payload is not a reader or valid buffer
+                                 * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                                 */
+                                AutoscalingTargets.decodeDelimited = function decodeDelimited(reader) {
+                                    if (!(reader instanceof $Reader))
+                                        reader = new $Reader(reader);
+                                    return this.decode(reader, reader.uint32());
+                                };
+    
+                                /**
+                                 * Verifies an AutoscalingTargets message.
+                                 * @function verify
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {Object.<string,*>} message Plain object to verify
+                                 * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                                 */
+                                AutoscalingTargets.verify = function verify(message) {
+                                    if (typeof message !== "object" || message === null)
+                                        return "object expected";
+                                    if (message.highPriorityCpuUtilizationPercent != null && message.hasOwnProperty("highPriorityCpuUtilizationPercent"))
+                                        if (!$util.isInteger(message.highPriorityCpuUtilizationPercent))
+                                            return "highPriorityCpuUtilizationPercent: integer expected";
+                                    if (message.storageUtilizationPercent != null && message.hasOwnProperty("storageUtilizationPercent"))
+                                        if (!$util.isInteger(message.storageUtilizationPercent))
+                                            return "storageUtilizationPercent: integer expected";
+                                    return null;
+                                };
+    
+                                /**
+                                 * Creates an AutoscalingTargets message from a plain object. Also converts values to their respective internal types.
+                                 * @function fromObject
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {Object.<string,*>} object Plain object
+                                 * @returns {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets} AutoscalingTargets
+                                 */
+                                AutoscalingTargets.fromObject = function fromObject(object) {
+                                    if (object instanceof $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets)
+                                        return object;
+                                    var message = new $root.google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets();
+                                    if (object.highPriorityCpuUtilizationPercent != null)
+                                        message.highPriorityCpuUtilizationPercent = object.highPriorityCpuUtilizationPercent | 0;
+                                    if (object.storageUtilizationPercent != null)
+                                        message.storageUtilizationPercent = object.storageUtilizationPercent | 0;
+                                    return message;
+                                };
+    
+                                /**
+                                 * Creates a plain object from an AutoscalingTargets message. Also converts values to other types if specified.
+                                 * @function toObject
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets} message AutoscalingTargets
+                                 * @param {$protobuf.IConversionOptions} [options] Conversion options
+                                 * @returns {Object.<string,*>} Plain object
+                                 */
+                                AutoscalingTargets.toObject = function toObject(message, options) {
+                                    if (!options)
+                                        options = {};
+                                    var object = {};
+                                    if (options.defaults) {
+                                        object.highPriorityCpuUtilizationPercent = 0;
+                                        object.storageUtilizationPercent = 0;
+                                    }
+                                    if (message.highPriorityCpuUtilizationPercent != null && message.hasOwnProperty("highPriorityCpuUtilizationPercent"))
+                                        object.highPriorityCpuUtilizationPercent = message.highPriorityCpuUtilizationPercent;
+                                    if (message.storageUtilizationPercent != null && message.hasOwnProperty("storageUtilizationPercent"))
+                                        object.storageUtilizationPercent = message.storageUtilizationPercent;
+                                    return object;
+                                };
+    
+                                /**
+                                 * Converts this AutoscalingTargets to JSON.
+                                 * @function toJSON
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @instance
+                                 * @returns {Object.<string,*>} JSON object
+                                 */
+                                AutoscalingTargets.prototype.toJSON = function toJSON() {
+                                    return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                                };
+    
+                                /**
+                                 * Gets the default type url for AutoscalingTargets
+                                 * @function getTypeUrl
+                                 * @memberof google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets
+                                 * @static
+                                 * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                                 * @returns {string} The default type url
+                                 */
+                                AutoscalingTargets.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                                    if (typeUrlPrefix === undefined) {
+                                        typeUrlPrefix = "type.googleapis.com";
+                                    }
+                                    return typeUrlPrefix + "/google.spanner.admin.instance.v1.AutoscalingConfig.AutoscalingTargets";
+                                };
+    
+                                return AutoscalingTargets;
+                            })();
+    
+                            return AutoscalingConfig;
+                        })();
+    
                         v1.Instance = (function() {
     
                             /**
@@ -29283,6 +31633,7 @@
                              * @property {string|null} [displayName] Instance displayName
                              * @property {number|null} [nodeCount] Instance nodeCount
                              * @property {number|null} [processingUnits] Instance processingUnits
+                             * @property {google.spanner.admin.instance.v1.IAutoscalingConfig|null} [autoscalingConfig] Instance autoscalingConfig
                              * @property {google.spanner.admin.instance.v1.Instance.State|null} [state] Instance state
                              * @property {Object.<string,string>|null} [labels] Instance labels
                              * @property {Array.<string>|null} [endpointUris] Instance endpointUris
@@ -29347,6 +31698,14 @@
                              */
                             Instance.prototype.processingUnits = 0;
     
+                            /**
+                             * Instance autoscalingConfig.
+                             * @member {google.spanner.admin.instance.v1.IAutoscalingConfig|null|undefined} autoscalingConfig
+                             * @memberof google.spanner.admin.instance.v1.Instance
+                             * @instance
+                             */
+                            Instance.prototype.autoscalingConfig = null;
+    
                             /**
                              * Instance state.
                              * @member {google.spanner.admin.instance.v1.Instance.State} state
@@ -29433,6 +31792,8 @@
                                     $root.google.protobuf.Timestamp.encode(message.createTime, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
                                 if (message.updateTime != null && Object.hasOwnProperty.call(message, "updateTime"))
                                     $root.google.protobuf.Timestamp.encode(message.updateTime, writer.uint32(/* id 12, wireType 2 =*/98).fork()).ldelim();
+                                if (message.autoscalingConfig != null && Object.hasOwnProperty.call(message, "autoscalingConfig"))
+                                    $root.google.spanner.admin.instance.v1.AutoscalingConfig.encode(message.autoscalingConfig, writer.uint32(/* id 17, wireType 2 =*/138).fork()).ldelim();
                                 return writer;
                             };
     
@@ -29487,6 +31848,10 @@
                                             message.processingUnits = reader.int32();
                                             break;
                                         }
+                                    case 17: {
+                                            message.autoscalingConfig = $root.google.spanner.admin.instance.v1.AutoscalingConfig.decode(reader, reader.uint32());
+                                            break;
+                                        }
                                     case 6: {
                                             message.state = reader.int32();
                                             break;
@@ -29578,6 +31943,11 @@
                                 if (message.processingUnits != null && message.hasOwnProperty("processingUnits"))
                                     if (!$util.isInteger(message.processingUnits))
                                         return "processingUnits: integer expected";
+                                if (message.autoscalingConfig != null && message.hasOwnProperty("autoscalingConfig")) {
+                                    var error = $root.google.spanner.admin.instance.v1.AutoscalingConfig.verify(message.autoscalingConfig);
+                                    if (error)
+                                        return "autoscalingConfig." + error;
+                                }
                                 if (message.state != null && message.hasOwnProperty("state"))
                                     switch (message.state) {
                                     default:
@@ -29637,6 +32007,11 @@
                                     message.nodeCount = object.nodeCount | 0;
                                 if (object.processingUnits != null)
                                     message.processingUnits = object.processingUnits | 0;
+                                if (object.autoscalingConfig != null) {
+                                    if (typeof object.autoscalingConfig !== "object")
+                                        throw TypeError(".google.spanner.admin.instance.v1.Instance.autoscalingConfig: object expected");
+                                    message.autoscalingConfig = $root.google.spanner.admin.instance.v1.AutoscalingConfig.fromObject(object.autoscalingConfig);
+                                }
                                 switch (object.state) {
                                 default:
                                     if (typeof object.state === "number") {
@@ -29710,6 +32085,7 @@
                                     object.processingUnits = 0;
                                     object.createTime = null;
                                     object.updateTime = null;
+                                    object.autoscalingConfig = null;
                                 }
                                 if (message.name != null && message.hasOwnProperty("name"))
                                     object.name = message.name;
@@ -29738,6 +32114,8 @@
                                     object.createTime = $root.google.protobuf.Timestamp.toObject(message.createTime, options);
                                 if (message.updateTime != null && message.hasOwnProperty("updateTime"))
                                     object.updateTime = $root.google.protobuf.Timestamp.toObject(message.updateTime, options);
+                                if (message.autoscalingConfig != null && message.hasOwnProperty("autoscalingConfig"))
+                                    object.autoscalingConfig = $root.google.spanner.admin.instance.v1.AutoscalingConfig.toObject(message.autoscalingConfig, options);
                                 return object;
                             };
     
@@ -40566,6 +42944,7 @@
                             case 0:
                             case 2:
                             case 3:
+                            case 4:
                                 break;
                             }
                         return null;
@@ -40668,6 +43047,10 @@
                         case 3:
                             message.typeAnnotation = 3;
                             break;
+                        case "PG_OID":
+                        case 4:
+                            message.typeAnnotation = 4;
+                            break;
                         }
                         return message;
                     };
@@ -41228,12 +43611,14 @@
                  * @property {number} TYPE_ANNOTATION_CODE_UNSPECIFIED=0 TYPE_ANNOTATION_CODE_UNSPECIFIED value
                  * @property {number} PG_NUMERIC=2 PG_NUMERIC value
                  * @property {number} PG_JSONB=3 PG_JSONB value
+                 * @property {number} PG_OID=4 PG_OID value
                  */
                 v1.TypeAnnotationCode = (function() {
                     var valuesById = {}, values = Object.create(valuesById);
                     values[valuesById[0] = "TYPE_ANNOTATION_CODE_UNSPECIFIED"] = 0;
                     values[valuesById[2] = "PG_NUMERIC"] = 2;
                     values[valuesById[3] = "PG_JSONB"] = 3;
+                    values[valuesById[4] = "PG_OID"] = 4;
                     return values;
                 })();
     
@@ -41764,6 +44149,39 @@
                      * @variation 2
                      */
     
+                    /**
+                     * Callback as used by {@link google.spanner.v1.Spanner|batchWrite}.
+                     * @memberof google.spanner.v1.Spanner
+                     * @typedef BatchWriteCallback
+                     * @type {function}
+                     * @param {Error|null} error Error, if any
+                     * @param {google.spanner.v1.BatchWriteResponse} [response] BatchWriteResponse
+                     */
+    
+                    /**
+                     * Calls BatchWrite.
+                     * @function batchWrite
+                     * @memberof google.spanner.v1.Spanner
+                     * @instance
+                     * @param {google.spanner.v1.IBatchWriteRequest} request BatchWriteRequest message or plain object
+                     * @param {google.spanner.v1.Spanner.BatchWriteCallback} callback Node-style callback called with the error, if any, and BatchWriteResponse
+                     * @returns {undefined}
+                     * @variation 1
+                     */
+                    Object.defineProperty(Spanner.prototype.batchWrite = function batchWrite(request, callback) {
+                        return this.rpcCall(batchWrite, $root.google.spanner.v1.BatchWriteRequest, $root.google.spanner.v1.BatchWriteResponse, request, callback);
+                    }, "name", { value: "BatchWrite" });
+    
+                    /**
+                     * Calls BatchWrite.
+                     * @function batchWrite
+                     * @memberof google.spanner.v1.Spanner
+                     * @instance
+                     * @param {google.spanner.v1.IBatchWriteRequest} request BatchWriteRequest message or plain object
+                     * @returns {Promise<google.spanner.v1.BatchWriteResponse>} Promise
+                     * @variation 2
+                     */
+    
                     return Spanner;
                 })();
     
@@ -44044,36 +46462,25 @@
                     return RequestOptions;
                 })();
     
-                v1.ExecuteSqlRequest = (function() {
+                v1.DirectedReadOptions = (function() {
     
                     /**
-                     * Properties of an ExecuteSqlRequest.
+                     * Properties of a DirectedReadOptions.
                      * @memberof google.spanner.v1
-                     * @interface IExecuteSqlRequest
-                     * @property {string|null} [session] ExecuteSqlRequest session
-                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ExecuteSqlRequest transaction
-                     * @property {string|null} [sql] ExecuteSqlRequest sql
-                     * @property {google.protobuf.IStruct|null} [params] ExecuteSqlRequest params
-                     * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] ExecuteSqlRequest paramTypes
-                     * @property {Uint8Array|null} [resumeToken] ExecuteSqlRequest resumeToken
-                     * @property {google.spanner.v1.ExecuteSqlRequest.QueryMode|null} [queryMode] ExecuteSqlRequest queryMode
-                     * @property {Uint8Array|null} [partitionToken] ExecuteSqlRequest partitionToken
-                     * @property {number|Long|null} [seqno] ExecuteSqlRequest seqno
-                     * @property {google.spanner.v1.ExecuteSqlRequest.IQueryOptions|null} [queryOptions] ExecuteSqlRequest queryOptions
-                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ExecuteSqlRequest requestOptions
-                     * @property {boolean|null} [dataBoostEnabled] ExecuteSqlRequest dataBoostEnabled
+                     * @interface IDirectedReadOptions
+                     * @property {google.spanner.v1.DirectedReadOptions.IIncludeReplicas|null} [includeReplicas] DirectedReadOptions includeReplicas
+                     * @property {google.spanner.v1.DirectedReadOptions.IExcludeReplicas|null} [excludeReplicas] DirectedReadOptions excludeReplicas
                      */
     
                     /**
-                     * Constructs a new ExecuteSqlRequest.
+                     * Constructs a new DirectedReadOptions.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents an ExecuteSqlRequest.
-                     * @implements IExecuteSqlRequest
+                     * @classdesc Represents a DirectedReadOptions.
+                     * @implements IDirectedReadOptions
                      * @constructor
-                     * @param {google.spanner.v1.IExecuteSqlRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IDirectedReadOptions=} [properties] Properties to set
                      */
-                    function ExecuteSqlRequest(properties) {
-                        this.paramTypes = {};
+                    function DirectedReadOptions(properties) {
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -44081,251 +46488,103 @@
                     }
     
                     /**
-                     * ExecuteSqlRequest session.
-                     * @member {string} session
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.session = "";
-    
-                    /**
-                     * ExecuteSqlRequest transaction.
-                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.transaction = null;
-    
-                    /**
-                     * ExecuteSqlRequest sql.
-                     * @member {string} sql
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.sql = "";
-    
-                    /**
-                     * ExecuteSqlRequest params.
-                     * @member {google.protobuf.IStruct|null|undefined} params
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.params = null;
-    
-                    /**
-                     * ExecuteSqlRequest paramTypes.
-                     * @member {Object.<string,google.spanner.v1.IType>} paramTypes
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.paramTypes = $util.emptyObject;
-    
-                    /**
-                     * ExecuteSqlRequest resumeToken.
-                     * @member {Uint8Array} resumeToken
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.resumeToken = $util.newBuffer([]);
-    
-                    /**
-                     * ExecuteSqlRequest queryMode.
-                     * @member {google.spanner.v1.ExecuteSqlRequest.QueryMode} queryMode
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.queryMode = 0;
-    
-                    /**
-                     * ExecuteSqlRequest partitionToken.
-                     * @member {Uint8Array} partitionToken
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.partitionToken = $util.newBuffer([]);
-    
-                    /**
-                     * ExecuteSqlRequest seqno.
-                     * @member {number|Long} seqno
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * DirectedReadOptions includeReplicas.
+                     * @member {google.spanner.v1.DirectedReadOptions.IIncludeReplicas|null|undefined} includeReplicas
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @instance
                      */
-                    ExecuteSqlRequest.prototype.seqno = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+                    DirectedReadOptions.prototype.includeReplicas = null;
     
                     /**
-                     * ExecuteSqlRequest queryOptions.
-                     * @member {google.spanner.v1.ExecuteSqlRequest.IQueryOptions|null|undefined} queryOptions
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * DirectedReadOptions excludeReplicas.
+                     * @member {google.spanner.v1.DirectedReadOptions.IExcludeReplicas|null|undefined} excludeReplicas
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @instance
                      */
-                    ExecuteSqlRequest.prototype.queryOptions = null;
+                    DirectedReadOptions.prototype.excludeReplicas = null;
     
-                    /**
-                     * ExecuteSqlRequest requestOptions.
-                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
-                     * @instance
-                     */
-                    ExecuteSqlRequest.prototype.requestOptions = null;
+                    // OneOf field names bound to virtual getters and setters
+                    var $oneOfFields;
     
                     /**
-                     * ExecuteSqlRequest dataBoostEnabled.
-                     * @member {boolean} dataBoostEnabled
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * DirectedReadOptions replicas.
+                     * @member {"includeReplicas"|"excludeReplicas"|undefined} replicas
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @instance
                      */
-                    ExecuteSqlRequest.prototype.dataBoostEnabled = false;
+                    Object.defineProperty(DirectedReadOptions.prototype, "replicas", {
+                        get: $util.oneOfGetter($oneOfFields = ["includeReplicas", "excludeReplicas"]),
+                        set: $util.oneOfSetter($oneOfFields)
+                    });
     
                     /**
-                     * Creates a new ExecuteSqlRequest instance using the specified properties.
+                     * Creates a new DirectedReadOptions instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
-                     * @param {google.spanner.v1.IExecuteSqlRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest instance
+                     * @param {google.spanner.v1.IDirectedReadOptions=} [properties] Properties to set
+                     * @returns {google.spanner.v1.DirectedReadOptions} DirectedReadOptions instance
                      */
-                    ExecuteSqlRequest.create = function create(properties) {
-                        return new ExecuteSqlRequest(properties);
+                    DirectedReadOptions.create = function create(properties) {
+                        return new DirectedReadOptions(properties);
                     };
     
                     /**
-                     * Encodes the specified ExecuteSqlRequest message. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.verify|verify} messages.
+                     * Encodes the specified DirectedReadOptions message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
-                     * @param {google.spanner.v1.IExecuteSqlRequest} message ExecuteSqlRequest message or plain object to encode
+                     * @param {google.spanner.v1.IDirectedReadOptions} message DirectedReadOptions message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    ExecuteSqlRequest.encode = function encode(message, writer) {
+                    DirectedReadOptions.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
-                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
-                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
-                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
-                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.sql);
-                        if (message.params != null && Object.hasOwnProperty.call(message, "params"))
-                            $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
-                        if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
-                            for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
-                                writer.uint32(/* id 5, wireType 2 =*/42).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
-                                $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
-                            }
-                        if (message.resumeToken != null && Object.hasOwnProperty.call(message, "resumeToken"))
-                            writer.uint32(/* id 6, wireType 2 =*/50).bytes(message.resumeToken);
-                        if (message.queryMode != null && Object.hasOwnProperty.call(message, "queryMode"))
-                            writer.uint32(/* id 7, wireType 0 =*/56).int32(message.queryMode);
-                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
-                            writer.uint32(/* id 8, wireType 2 =*/66).bytes(message.partitionToken);
-                        if (message.seqno != null && Object.hasOwnProperty.call(message, "seqno"))
-                            writer.uint32(/* id 9, wireType 0 =*/72).int64(message.seqno);
-                        if (message.queryOptions != null && Object.hasOwnProperty.call(message, "queryOptions"))
-                            $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.encode(message.queryOptions, writer.uint32(/* id 10, wireType 2 =*/82).fork()).ldelim();
-                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
-                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
-                        if (message.dataBoostEnabled != null && Object.hasOwnProperty.call(message, "dataBoostEnabled"))
-                            writer.uint32(/* id 16, wireType 0 =*/128).bool(message.dataBoostEnabled);
+                        if (message.includeReplicas != null && Object.hasOwnProperty.call(message, "includeReplicas"))
+                            $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas.encode(message.includeReplicas, writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                        if (message.excludeReplicas != null && Object.hasOwnProperty.call(message, "excludeReplicas"))
+                            $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas.encode(message.excludeReplicas, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified ExecuteSqlRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.verify|verify} messages.
+                     * Encodes the specified DirectedReadOptions message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
-                     * @param {google.spanner.v1.IExecuteSqlRequest} message ExecuteSqlRequest message or plain object to encode
+                     * @param {google.spanner.v1.IDirectedReadOptions} message DirectedReadOptions message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    ExecuteSqlRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    DirectedReadOptions.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes an ExecuteSqlRequest message from the specified reader or buffer.
+                     * Decodes a DirectedReadOptions message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     * @returns {google.spanner.v1.DirectedReadOptions} DirectedReadOptions
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    ExecuteSqlRequest.decode = function decode(reader, length) {
+                    DirectedReadOptions.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteSqlRequest(), key, value;
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.DirectedReadOptions();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
                             case 1: {
-                                    message.session = reader.string();
+                                    message.includeReplicas = $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas.decode(reader, reader.uint32());
                                     break;
                                 }
                             case 2: {
-                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 3: {
-                                    message.sql = reader.string();
-                                    break;
-                                }
-                            case 4: {
-                                    message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 5: {
-                                    if (message.paramTypes === $util.emptyObject)
-                                        message.paramTypes = {};
-                                    var end2 = reader.uint32() + reader.pos;
-                                    key = "";
-                                    value = null;
-                                    while (reader.pos < end2) {
-                                        var tag2 = reader.uint32();
-                                        switch (tag2 >>> 3) {
-                                        case 1:
-                                            key = reader.string();
-                                            break;
-                                        case 2:
-                                            value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
-                                            break;
-                                        default:
-                                            reader.skipType(tag2 & 7);
-                                            break;
-                                        }
-                                    }
-                                    message.paramTypes[key] = value;
-                                    break;
-                                }
-                            case 6: {
-                                    message.resumeToken = reader.bytes();
-                                    break;
-                                }
-                            case 7: {
-                                    message.queryMode = reader.int32();
-                                    break;
-                                }
-                            case 8: {
-                                    message.partitionToken = reader.bytes();
-                                    break;
-                                }
-                            case 9: {
-                                    message.seqno = reader.int64();
-                                    break;
-                                }
-                            case 10: {
-                                    message.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 11: {
-                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 16: {
-                                    message.dataBoostEnabled = reader.bool();
+                                    message.excludeReplicas = $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas.decode(reader, reader.uint32());
                                     break;
                                 }
                             default:
@@ -44337,321 +46596,150 @@
                     };
     
                     /**
-                     * Decodes an ExecuteSqlRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a DirectedReadOptions message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     * @returns {google.spanner.v1.DirectedReadOptions} DirectedReadOptions
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    ExecuteSqlRequest.decodeDelimited = function decodeDelimited(reader) {
+                    DirectedReadOptions.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies an ExecuteSqlRequest message.
+                     * Verifies a DirectedReadOptions message.
                      * @function verify
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    ExecuteSqlRequest.verify = function verify(message) {
+                    DirectedReadOptions.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            if (!$util.isString(message.session))
-                                return "session: string expected";
-                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
-                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
-                            if (error)
-                                return "transaction." + error;
-                        }
-                        if (message.sql != null && message.hasOwnProperty("sql"))
-                            if (!$util.isString(message.sql))
-                                return "sql: string expected";
-                        if (message.params != null && message.hasOwnProperty("params")) {
-                            var error = $root.google.protobuf.Struct.verify(message.params);
-                            if (error)
-                                return "params." + error;
-                        }
-                        if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
-                            if (!$util.isObject(message.paramTypes))
-                                return "paramTypes: object expected";
-                            var key = Object.keys(message.paramTypes);
-                            for (var i = 0; i < key.length; ++i) {
-                                var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
+                        var properties = {};
+                        if (message.includeReplicas != null && message.hasOwnProperty("includeReplicas")) {
+                            properties.replicas = 1;
+                            {
+                                var error = $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas.verify(message.includeReplicas);
                                 if (error)
-                                    return "paramTypes." + error;
+                                    return "includeReplicas." + error;
                             }
                         }
-                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
-                            if (!(message.resumeToken && typeof message.resumeToken.length === "number" || $util.isString(message.resumeToken)))
-                                return "resumeToken: buffer expected";
-                        if (message.queryMode != null && message.hasOwnProperty("queryMode"))
-                            switch (message.queryMode) {
-                            default:
-                                return "queryMode: enum value expected";
-                            case 0:
-                            case 1:
-                            case 2:
-                                break;
+                        if (message.excludeReplicas != null && message.hasOwnProperty("excludeReplicas")) {
+                            if (properties.replicas === 1)
+                                return "replicas: multiple values";
+                            properties.replicas = 1;
+                            {
+                                var error = $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas.verify(message.excludeReplicas);
+                                if (error)
+                                    return "excludeReplicas." + error;
                             }
-                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
-                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
-                                return "partitionToken: buffer expected";
-                        if (message.seqno != null && message.hasOwnProperty("seqno"))
-                            if (!$util.isInteger(message.seqno) && !(message.seqno && $util.isInteger(message.seqno.low) && $util.isInteger(message.seqno.high)))
-                                return "seqno: integer|Long expected";
-                        if (message.queryOptions != null && message.hasOwnProperty("queryOptions")) {
-                            var error = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify(message.queryOptions);
-                            if (error)
-                                return "queryOptions." + error;
                         }
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
-                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
-                            if (error)
-                                return "requestOptions." + error;
-                        }
-                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
-                            if (typeof message.dataBoostEnabled !== "boolean")
-                                return "dataBoostEnabled: boolean expected";
                         return null;
                     };
     
                     /**
-                     * Creates an ExecuteSqlRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a DirectedReadOptions message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     * @returns {google.spanner.v1.DirectedReadOptions} DirectedReadOptions
                      */
-                    ExecuteSqlRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.ExecuteSqlRequest)
+                    DirectedReadOptions.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.DirectedReadOptions)
                             return object;
-                        var message = new $root.google.spanner.v1.ExecuteSqlRequest();
-                        if (object.session != null)
-                            message.session = String(object.session);
-                        if (object.transaction != null) {
-                            if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.transaction: object expected");
-                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
+                        var message = new $root.google.spanner.v1.DirectedReadOptions();
+                        if (object.includeReplicas != null) {
+                            if (typeof object.includeReplicas !== "object")
+                                throw TypeError(".google.spanner.v1.DirectedReadOptions.includeReplicas: object expected");
+                            message.includeReplicas = $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas.fromObject(object.includeReplicas);
                         }
-                        if (object.sql != null)
-                            message.sql = String(object.sql);
-                        if (object.params != null) {
-                            if (typeof object.params !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.params: object expected");
-                            message.params = $root.google.protobuf.Struct.fromObject(object.params);
-                        }
-                        if (object.paramTypes) {
-                            if (typeof object.paramTypes !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.paramTypes: object expected");
-                            message.paramTypes = {};
-                            for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
-                                if (typeof object.paramTypes[keys[i]] !== "object")
-                                    throw TypeError(".google.spanner.v1.ExecuteSqlRequest.paramTypes: object expected");
-                                message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
-                            }
-                        }
-                        if (object.resumeToken != null)
-                            if (typeof object.resumeToken === "string")
-                                $util.base64.decode(object.resumeToken, message.resumeToken = $util.newBuffer($util.base64.length(object.resumeToken)), 0);
-                            else if (object.resumeToken.length >= 0)
-                                message.resumeToken = object.resumeToken;
-                        switch (object.queryMode) {
-                        default:
-                            if (typeof object.queryMode === "number") {
-                                message.queryMode = object.queryMode;
-                                break;
-                            }
-                            break;
-                        case "NORMAL":
-                        case 0:
-                            message.queryMode = 0;
-                            break;
-                        case "PLAN":
-                        case 1:
-                            message.queryMode = 1;
-                            break;
-                        case "PROFILE":
-                        case 2:
-                            message.queryMode = 2;
-                            break;
-                        }
-                        if (object.partitionToken != null)
-                            if (typeof object.partitionToken === "string")
-                                $util.base64.decode(object.partitionToken, message.partitionToken = $util.newBuffer($util.base64.length(object.partitionToken)), 0);
-                            else if (object.partitionToken.length >= 0)
-                                message.partitionToken = object.partitionToken;
-                        if (object.seqno != null)
-                            if ($util.Long)
-                                (message.seqno = $util.Long.fromValue(object.seqno)).unsigned = false;
-                            else if (typeof object.seqno === "string")
-                                message.seqno = parseInt(object.seqno, 10);
-                            else if (typeof object.seqno === "number")
-                                message.seqno = object.seqno;
-                            else if (typeof object.seqno === "object")
-                                message.seqno = new $util.LongBits(object.seqno.low >>> 0, object.seqno.high >>> 0).toNumber();
-                        if (object.queryOptions != null) {
-                            if (typeof object.queryOptions !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.queryOptions: object expected");
-                            message.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.fromObject(object.queryOptions);
+                        if (object.excludeReplicas != null) {
+                            if (typeof object.excludeReplicas !== "object")
+                                throw TypeError(".google.spanner.v1.DirectedReadOptions.excludeReplicas: object expected");
+                            message.excludeReplicas = $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas.fromObject(object.excludeReplicas);
                         }
-                        if (object.requestOptions != null) {
-                            if (typeof object.requestOptions !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.requestOptions: object expected");
-                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
-                        }
-                        if (object.dataBoostEnabled != null)
-                            message.dataBoostEnabled = Boolean(object.dataBoostEnabled);
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from an ExecuteSqlRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a DirectedReadOptions message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
-                     * @param {google.spanner.v1.ExecuteSqlRequest} message ExecuteSqlRequest
+                     * @param {google.spanner.v1.DirectedReadOptions} message DirectedReadOptions
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    ExecuteSqlRequest.toObject = function toObject(message, options) {
+                    DirectedReadOptions.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
-                        if (options.objects || options.defaults)
-                            object.paramTypes = {};
-                        if (options.defaults) {
-                            object.session = "";
-                            object.transaction = null;
-                            object.sql = "";
-                            object.params = null;
-                            if (options.bytes === String)
-                                object.resumeToken = "";
-                            else {
-                                object.resumeToken = [];
-                                if (options.bytes !== Array)
-                                    object.resumeToken = $util.newBuffer(object.resumeToken);
-                            }
-                            object.queryMode = options.enums === String ? "NORMAL" : 0;
-                            if (options.bytes === String)
-                                object.partitionToken = "";
-                            else {
-                                object.partitionToken = [];
-                                if (options.bytes !== Array)
-                                    object.partitionToken = $util.newBuffer(object.partitionToken);
-                            }
-                            if ($util.Long) {
-                                var long = new $util.Long(0, 0, false);
-                                object.seqno = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
-                            } else
-                                object.seqno = options.longs === String ? "0" : 0;
-                            object.queryOptions = null;
-                            object.requestOptions = null;
-                            object.dataBoostEnabled = false;
+                        if (message.includeReplicas != null && message.hasOwnProperty("includeReplicas")) {
+                            object.includeReplicas = $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas.toObject(message.includeReplicas, options);
+                            if (options.oneofs)
+                                object.replicas = "includeReplicas";
                         }
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            object.session = message.session;
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
-                        if (message.sql != null && message.hasOwnProperty("sql"))
-                            object.sql = message.sql;
-                        if (message.params != null && message.hasOwnProperty("params"))
-                            object.params = $root.google.protobuf.Struct.toObject(message.params, options);
-                        var keys2;
-                        if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
-                            object.paramTypes = {};
-                            for (var j = 0; j < keys2.length; ++j)
-                                object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                        if (message.excludeReplicas != null && message.hasOwnProperty("excludeReplicas")) {
+                            object.excludeReplicas = $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas.toObject(message.excludeReplicas, options);
+                            if (options.oneofs)
+                                object.replicas = "excludeReplicas";
                         }
-                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
-                            object.resumeToken = options.bytes === String ? $util.base64.encode(message.resumeToken, 0, message.resumeToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.resumeToken) : message.resumeToken;
-                        if (message.queryMode != null && message.hasOwnProperty("queryMode"))
-                            object.queryMode = options.enums === String ? $root.google.spanner.v1.ExecuteSqlRequest.QueryMode[message.queryMode] === undefined ? message.queryMode : $root.google.spanner.v1.ExecuteSqlRequest.QueryMode[message.queryMode] : message.queryMode;
-                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
-                            object.partitionToken = options.bytes === String ? $util.base64.encode(message.partitionToken, 0, message.partitionToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.partitionToken) : message.partitionToken;
-                        if (message.seqno != null && message.hasOwnProperty("seqno"))
-                            if (typeof message.seqno === "number")
-                                object.seqno = options.longs === String ? String(message.seqno) : message.seqno;
-                            else
-                                object.seqno = options.longs === String ? $util.Long.prototype.toString.call(message.seqno) : options.longs === Number ? new $util.LongBits(message.seqno.low >>> 0, message.seqno.high >>> 0).toNumber() : message.seqno;
-                        if (message.queryOptions != null && message.hasOwnProperty("queryOptions"))
-                            object.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.toObject(message.queryOptions, options);
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
-                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
-                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
-                            object.dataBoostEnabled = message.dataBoostEnabled;
                         return object;
                     };
     
                     /**
-                     * Converts this ExecuteSqlRequest to JSON.
+                     * Converts this DirectedReadOptions to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    ExecuteSqlRequest.prototype.toJSON = function toJSON() {
+                    DirectedReadOptions.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for ExecuteSqlRequest
+                     * Gets the default type url for DirectedReadOptions
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @memberof google.spanner.v1.DirectedReadOptions
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    ExecuteSqlRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    DirectedReadOptions.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.ExecuteSqlRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.DirectedReadOptions";
                     };
     
-                    /**
-                     * QueryMode enum.
-                     * @name google.spanner.v1.ExecuteSqlRequest.QueryMode
-                     * @enum {number}
-                     * @property {number} NORMAL=0 NORMAL value
-                     * @property {number} PLAN=1 PLAN value
-                     * @property {number} PROFILE=2 PROFILE value
-                     */
-                    ExecuteSqlRequest.QueryMode = (function() {
-                        var valuesById = {}, values = Object.create(valuesById);
-                        values[valuesById[0] = "NORMAL"] = 0;
-                        values[valuesById[1] = "PLAN"] = 1;
-                        values[valuesById[2] = "PROFILE"] = 2;
-                        return values;
-                    })();
-    
-                    ExecuteSqlRequest.QueryOptions = (function() {
+                    DirectedReadOptions.ReplicaSelection = (function() {
     
                         /**
-                         * Properties of a QueryOptions.
-                         * @memberof google.spanner.v1.ExecuteSqlRequest
-                         * @interface IQueryOptions
-                         * @property {string|null} [optimizerVersion] QueryOptions optimizerVersion
-                         * @property {string|null} [optimizerStatisticsPackage] QueryOptions optimizerStatisticsPackage
+                         * Properties of a ReplicaSelection.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @interface IReplicaSelection
+                         * @property {string|null} [location] ReplicaSelection location
+                         * @property {google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type|null} [type] ReplicaSelection type
                          */
     
                         /**
-                         * Constructs a new QueryOptions.
-                         * @memberof google.spanner.v1.ExecuteSqlRequest
-                         * @classdesc Represents a QueryOptions.
-                         * @implements IQueryOptions
+                         * Constructs a new ReplicaSelection.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @classdesc Represents a ReplicaSelection.
+                         * @implements IReplicaSelection
                          * @constructor
-                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions=} [properties] Properties to set
+                         * @param {google.spanner.v1.DirectedReadOptions.IReplicaSelection=} [properties] Properties to set
                          */
-                        function QueryOptions(properties) {
+                        function ReplicaSelection(properties) {
                             if (properties)
                                 for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                     if (properties[keys[i]] != null)
@@ -44659,89 +46747,89 @@
                         }
     
                         /**
-                         * QueryOptions optimizerVersion.
-                         * @member {string} optimizerVersion
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * ReplicaSelection location.
+                         * @member {string} location
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @instance
                          */
-                        QueryOptions.prototype.optimizerVersion = "";
+                        ReplicaSelection.prototype.location = "";
     
                         /**
-                         * QueryOptions optimizerStatisticsPackage.
-                         * @member {string} optimizerStatisticsPackage
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * ReplicaSelection type.
+                         * @member {google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type} type
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @instance
                          */
-                        QueryOptions.prototype.optimizerStatisticsPackage = "";
+                        ReplicaSelection.prototype.type = 0;
     
                         /**
-                         * Creates a new QueryOptions instance using the specified properties.
+                         * Creates a new ReplicaSelection instance using the specified properties.
                          * @function create
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
-                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions=} [properties] Properties to set
-                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions instance
+                         * @param {google.spanner.v1.DirectedReadOptions.IReplicaSelection=} [properties] Properties to set
+                         * @returns {google.spanner.v1.DirectedReadOptions.ReplicaSelection} ReplicaSelection instance
                          */
-                        QueryOptions.create = function create(properties) {
-                            return new QueryOptions(properties);
+                        ReplicaSelection.create = function create(properties) {
+                            return new ReplicaSelection(properties);
                         };
     
                         /**
-                         * Encodes the specified QueryOptions message. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify|verify} messages.
+                         * Encodes the specified ReplicaSelection message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify|verify} messages.
                          * @function encode
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
-                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions} message QueryOptions message or plain object to encode
+                         * @param {google.spanner.v1.DirectedReadOptions.IReplicaSelection} message ReplicaSelection message or plain object to encode
                          * @param {$protobuf.Writer} [writer] Writer to encode to
                          * @returns {$protobuf.Writer} Writer
                          */
-                        QueryOptions.encode = function encode(message, writer) {
+                        ReplicaSelection.encode = function encode(message, writer) {
                             if (!writer)
                                 writer = $Writer.create();
-                            if (message.optimizerVersion != null && Object.hasOwnProperty.call(message, "optimizerVersion"))
-                                writer.uint32(/* id 1, wireType 2 =*/10).string(message.optimizerVersion);
-                            if (message.optimizerStatisticsPackage != null && Object.hasOwnProperty.call(message, "optimizerStatisticsPackage"))
-                                writer.uint32(/* id 2, wireType 2 =*/18).string(message.optimizerStatisticsPackage);
+                            if (message.location != null && Object.hasOwnProperty.call(message, "location"))
+                                writer.uint32(/* id 1, wireType 2 =*/10).string(message.location);
+                            if (message.type != null && Object.hasOwnProperty.call(message, "type"))
+                                writer.uint32(/* id 2, wireType 0 =*/16).int32(message.type);
                             return writer;
                         };
     
                         /**
-                         * Encodes the specified QueryOptions message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify|verify} messages.
+                         * Encodes the specified ReplicaSelection message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify|verify} messages.
                          * @function encodeDelimited
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
-                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions} message QueryOptions message or plain object to encode
+                         * @param {google.spanner.v1.DirectedReadOptions.IReplicaSelection} message ReplicaSelection message or plain object to encode
                          * @param {$protobuf.Writer} [writer] Writer to encode to
                          * @returns {$protobuf.Writer} Writer
                          */
-                        QueryOptions.encodeDelimited = function encodeDelimited(message, writer) {
+                        ReplicaSelection.encodeDelimited = function encodeDelimited(message, writer) {
                             return this.encode(message, writer).ldelim();
                         };
     
                         /**
-                         * Decodes a QueryOptions message from the specified reader or buffer.
+                         * Decodes a ReplicaSelection message from the specified reader or buffer.
                          * @function decode
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
                          * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                          * @param {number} [length] Message length if known beforehand
-                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         * @returns {google.spanner.v1.DirectedReadOptions.ReplicaSelection} ReplicaSelection
                          * @throws {Error} If the payload is not a reader or valid buffer
                          * @throws {$protobuf.util.ProtocolError} If required fields are missing
                          */
-                        QueryOptions.decode = function decode(reader, length) {
+                        ReplicaSelection.decode = function decode(reader, length) {
                             if (!(reader instanceof $Reader))
                                 reader = $Reader.create(reader);
-                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions();
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection();
                             while (reader.pos < end) {
                                 var tag = reader.uint32();
                                 switch (tag >>> 3) {
                                 case 1: {
-                                        message.optimizerVersion = reader.string();
+                                        message.location = reader.string();
                                         break;
                                     }
                                 case 2: {
-                                        message.optimizerStatisticsPackage = reader.string();
+                                        message.type = reader.int32();
                                         break;
                                     }
                                 default:
@@ -44753,476 +46841,420 @@
                         };
     
                         /**
-                         * Decodes a QueryOptions message from the specified reader or buffer, length delimited.
+                         * Decodes a ReplicaSelection message from the specified reader or buffer, length delimited.
                          * @function decodeDelimited
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
                          * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         * @returns {google.spanner.v1.DirectedReadOptions.ReplicaSelection} ReplicaSelection
                          * @throws {Error} If the payload is not a reader or valid buffer
                          * @throws {$protobuf.util.ProtocolError} If required fields are missing
                          */
-                        QueryOptions.decodeDelimited = function decodeDelimited(reader) {
+                        ReplicaSelection.decodeDelimited = function decodeDelimited(reader) {
                             if (!(reader instanceof $Reader))
                                 reader = new $Reader(reader);
                             return this.decode(reader, reader.uint32());
                         };
     
                         /**
-                         * Verifies a QueryOptions message.
+                         * Verifies a ReplicaSelection message.
                          * @function verify
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
                          * @param {Object.<string,*>} message Plain object to verify
                          * @returns {string|null} `null` if valid, otherwise the reason why it is not
                          */
-                        QueryOptions.verify = function verify(message) {
+                        ReplicaSelection.verify = function verify(message) {
                             if (typeof message !== "object" || message === null)
                                 return "object expected";
-                            if (message.optimizerVersion != null && message.hasOwnProperty("optimizerVersion"))
-                                if (!$util.isString(message.optimizerVersion))
-                                    return "optimizerVersion: string expected";
-                            if (message.optimizerStatisticsPackage != null && message.hasOwnProperty("optimizerStatisticsPackage"))
-                                if (!$util.isString(message.optimizerStatisticsPackage))
-                                    return "optimizerStatisticsPackage: string expected";
+                            if (message.location != null && message.hasOwnProperty("location"))
+                                if (!$util.isString(message.location))
+                                    return "location: string expected";
+                            if (message.type != null && message.hasOwnProperty("type"))
+                                switch (message.type) {
+                                default:
+                                    return "type: enum value expected";
+                                case 0:
+                                case 1:
+                                case 2:
+                                    break;
+                                }
                             return null;
                         };
     
                         /**
-                         * Creates a QueryOptions message from a plain object. Also converts values to their respective internal types.
+                         * Creates a ReplicaSelection message from a plain object. Also converts values to their respective internal types.
                          * @function fromObject
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
                          * @param {Object.<string,*>} object Plain object
-                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         * @returns {google.spanner.v1.DirectedReadOptions.ReplicaSelection} ReplicaSelection
                          */
-                        QueryOptions.fromObject = function fromObject(object) {
-                            if (object instanceof $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions)
+                        ReplicaSelection.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection)
                                 return object;
-                            var message = new $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions();
-                            if (object.optimizerVersion != null)
-                                message.optimizerVersion = String(object.optimizerVersion);
-                            if (object.optimizerStatisticsPackage != null)
-                                message.optimizerStatisticsPackage = String(object.optimizerStatisticsPackage);
+                            var message = new $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection();
+                            if (object.location != null)
+                                message.location = String(object.location);
+                            switch (object.type) {
+                            default:
+                                if (typeof object.type === "number") {
+                                    message.type = object.type;
+                                    break;
+                                }
+                                break;
+                            case "TYPE_UNSPECIFIED":
+                            case 0:
+                                message.type = 0;
+                                break;
+                            case "READ_WRITE":
+                            case 1:
+                                message.type = 1;
+                                break;
+                            case "READ_ONLY":
+                            case 2:
+                                message.type = 2;
+                                break;
+                            }
                             return message;
                         };
     
                         /**
-                         * Creates a plain object from a QueryOptions message. Also converts values to other types if specified.
+                         * Creates a plain object from a ReplicaSelection message. Also converts values to other types if specified.
                          * @function toObject
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
-                         * @param {google.spanner.v1.ExecuteSqlRequest.QueryOptions} message QueryOptions
+                         * @param {google.spanner.v1.DirectedReadOptions.ReplicaSelection} message ReplicaSelection
                          * @param {$protobuf.IConversionOptions} [options] Conversion options
                          * @returns {Object.<string,*>} Plain object
                          */
-                        QueryOptions.toObject = function toObject(message, options) {
+                        ReplicaSelection.toObject = function toObject(message, options) {
                             if (!options)
                                 options = {};
                             var object = {};
                             if (options.defaults) {
-                                object.optimizerVersion = "";
-                                object.optimizerStatisticsPackage = "";
+                                object.location = "";
+                                object.type = options.enums === String ? "TYPE_UNSPECIFIED" : 0;
                             }
-                            if (message.optimizerVersion != null && message.hasOwnProperty("optimizerVersion"))
-                                object.optimizerVersion = message.optimizerVersion;
-                            if (message.optimizerStatisticsPackage != null && message.hasOwnProperty("optimizerStatisticsPackage"))
-                                object.optimizerStatisticsPackage = message.optimizerStatisticsPackage;
+                            if (message.location != null && message.hasOwnProperty("location"))
+                                object.location = message.location;
+                            if (message.type != null && message.hasOwnProperty("type"))
+                                object.type = options.enums === String ? $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type[message.type] === undefined ? message.type : $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type[message.type] : message.type;
                             return object;
                         };
     
                         /**
-                         * Converts this QueryOptions to JSON.
+                         * Converts this ReplicaSelection to JSON.
                          * @function toJSON
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @instance
                          * @returns {Object.<string,*>} JSON object
                          */
-                        QueryOptions.prototype.toJSON = function toJSON() {
+                        ReplicaSelection.prototype.toJSON = function toJSON() {
                             return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                         };
     
                         /**
-                         * Gets the default type url for QueryOptions
+                         * Gets the default type url for ReplicaSelection
                          * @function getTypeUrl
-                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @memberof google.spanner.v1.DirectedReadOptions.ReplicaSelection
                          * @static
                          * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                          * @returns {string} The default type url
                          */
-                        QueryOptions.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        ReplicaSelection.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                             if (typeUrlPrefix === undefined) {
                                 typeUrlPrefix = "type.googleapis.com";
                             }
-                            return typeUrlPrefix + "/google.spanner.v1.ExecuteSqlRequest.QueryOptions";
+                            return typeUrlPrefix + "/google.spanner.v1.DirectedReadOptions.ReplicaSelection";
                         };
     
-                        return QueryOptions;
-                    })();
-    
-                    return ExecuteSqlRequest;
-                })();
-    
-                v1.ExecuteBatchDmlRequest = (function() {
-    
-                    /**
-                     * Properties of an ExecuteBatchDmlRequest.
-                     * @memberof google.spanner.v1
-                     * @interface IExecuteBatchDmlRequest
-                     * @property {string|null} [session] ExecuteBatchDmlRequest session
-                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ExecuteBatchDmlRequest transaction
-                     * @property {Array.<google.spanner.v1.ExecuteBatchDmlRequest.IStatement>|null} [statements] ExecuteBatchDmlRequest statements
-                     * @property {number|Long|null} [seqno] ExecuteBatchDmlRequest seqno
-                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ExecuteBatchDmlRequest requestOptions
-                     */
+                        /**
+                         * Type enum.
+                         * @name google.spanner.v1.DirectedReadOptions.ReplicaSelection.Type
+                         * @enum {number}
+                         * @property {number} TYPE_UNSPECIFIED=0 TYPE_UNSPECIFIED value
+                         * @property {number} READ_WRITE=1 READ_WRITE value
+                         * @property {number} READ_ONLY=2 READ_ONLY value
+                         */
+                        ReplicaSelection.Type = (function() {
+                            var valuesById = {}, values = Object.create(valuesById);
+                            values[valuesById[0] = "TYPE_UNSPECIFIED"] = 0;
+                            values[valuesById[1] = "READ_WRITE"] = 1;
+                            values[valuesById[2] = "READ_ONLY"] = 2;
+                            return values;
+                        })();
     
-                    /**
-                     * Constructs a new ExecuteBatchDmlRequest.
-                     * @memberof google.spanner.v1
-                     * @classdesc Represents an ExecuteBatchDmlRequest.
-                     * @implements IExecuteBatchDmlRequest
-                     * @constructor
-                     * @param {google.spanner.v1.IExecuteBatchDmlRequest=} [properties] Properties to set
-                     */
-                    function ExecuteBatchDmlRequest(properties) {
-                        this.statements = [];
-                        if (properties)
-                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
-                                if (properties[keys[i]] != null)
-                                    this[keys[i]] = properties[keys[i]];
-                    }
+                        return ReplicaSelection;
+                    })();
     
-                    /**
-                     * ExecuteBatchDmlRequest session.
-                     * @member {string} session
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     */
-                    ExecuteBatchDmlRequest.prototype.session = "";
+                    DirectedReadOptions.IncludeReplicas = (function() {
     
-                    /**
-                     * ExecuteBatchDmlRequest transaction.
-                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     */
-                    ExecuteBatchDmlRequest.prototype.transaction = null;
+                        /**
+                         * Properties of an IncludeReplicas.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @interface IIncludeReplicas
+                         * @property {Array.<google.spanner.v1.DirectedReadOptions.IReplicaSelection>|null} [replicaSelections] IncludeReplicas replicaSelections
+                         * @property {boolean|null} [autoFailoverDisabled] IncludeReplicas autoFailoverDisabled
+                         */
     
-                    /**
-                     * ExecuteBatchDmlRequest statements.
-                     * @member {Array.<google.spanner.v1.ExecuteBatchDmlRequest.IStatement>} statements
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     */
-                    ExecuteBatchDmlRequest.prototype.statements = $util.emptyArray;
+                        /**
+                         * Constructs a new IncludeReplicas.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @classdesc Represents an IncludeReplicas.
+                         * @implements IIncludeReplicas
+                         * @constructor
+                         * @param {google.spanner.v1.DirectedReadOptions.IIncludeReplicas=} [properties] Properties to set
+                         */
+                        function IncludeReplicas(properties) {
+                            this.replicaSelections = [];
+                            if (properties)
+                                for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                    if (properties[keys[i]] != null)
+                                        this[keys[i]] = properties[keys[i]];
+                        }
     
-                    /**
-                     * ExecuteBatchDmlRequest seqno.
-                     * @member {number|Long} seqno
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     */
-                    ExecuteBatchDmlRequest.prototype.seqno = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+                        /**
+                         * IncludeReplicas replicaSelections.
+                         * @member {Array.<google.spanner.v1.DirectedReadOptions.IReplicaSelection>} replicaSelections
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @instance
+                         */
+                        IncludeReplicas.prototype.replicaSelections = $util.emptyArray;
     
-                    /**
-                     * ExecuteBatchDmlRequest requestOptions.
-                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     */
-                    ExecuteBatchDmlRequest.prototype.requestOptions = null;
+                        /**
+                         * IncludeReplicas autoFailoverDisabled.
+                         * @member {boolean} autoFailoverDisabled
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @instance
+                         */
+                        IncludeReplicas.prototype.autoFailoverDisabled = false;
     
-                    /**
-                     * Creates a new ExecuteBatchDmlRequest instance using the specified properties.
-                     * @function create
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest instance
-                     */
-                    ExecuteBatchDmlRequest.create = function create(properties) {
-                        return new ExecuteBatchDmlRequest(properties);
-                    };
+                        /**
+                         * Creates a new IncludeReplicas instance using the specified properties.
+                         * @function create
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {google.spanner.v1.DirectedReadOptions.IIncludeReplicas=} [properties] Properties to set
+                         * @returns {google.spanner.v1.DirectedReadOptions.IncludeReplicas} IncludeReplicas instance
+                         */
+                        IncludeReplicas.create = function create(properties) {
+                            return new IncludeReplicas(properties);
+                        };
     
-                    /**
-                     * Encodes the specified ExecuteBatchDmlRequest message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.verify|verify} messages.
-                     * @function encode
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlRequest} message ExecuteBatchDmlRequest message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
-                     */
-                    ExecuteBatchDmlRequest.encode = function encode(message, writer) {
-                        if (!writer)
-                            writer = $Writer.create();
-                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
-                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
-                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        if (message.statements != null && message.statements.length)
-                            for (var i = 0; i < message.statements.length; ++i)
-                                $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.encode(message.statements[i], writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
-                        if (message.seqno != null && Object.hasOwnProperty.call(message, "seqno"))
-                            writer.uint32(/* id 4, wireType 0 =*/32).int64(message.seqno);
-                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
-                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 5, wireType 2 =*/42).fork()).ldelim();
-                        return writer;
-                    };
+                        /**
+                         * Encodes the specified IncludeReplicas message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.IncludeReplicas.verify|verify} messages.
+                         * @function encode
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {google.spanner.v1.DirectedReadOptions.IIncludeReplicas} message IncludeReplicas message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        IncludeReplicas.encode = function encode(message, writer) {
+                            if (!writer)
+                                writer = $Writer.create();
+                            if (message.replicaSelections != null && message.replicaSelections.length)
+                                for (var i = 0; i < message.replicaSelections.length; ++i)
+                                    $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.encode(message.replicaSelections[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                            if (message.autoFailoverDisabled != null && Object.hasOwnProperty.call(message, "autoFailoverDisabled"))
+                                writer.uint32(/* id 2, wireType 0 =*/16).bool(message.autoFailoverDisabled);
+                            return writer;
+                        };
     
-                    /**
-                     * Encodes the specified ExecuteBatchDmlRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.verify|verify} messages.
-                     * @function encodeDelimited
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlRequest} message ExecuteBatchDmlRequest message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
-                     */
-                    ExecuteBatchDmlRequest.encodeDelimited = function encodeDelimited(message, writer) {
-                        return this.encode(message, writer).ldelim();
-                    };
+                        /**
+                         * Encodes the specified IncludeReplicas message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.IncludeReplicas.verify|verify} messages.
+                         * @function encodeDelimited
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {google.spanner.v1.DirectedReadOptions.IIncludeReplicas} message IncludeReplicas message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        IncludeReplicas.encodeDelimited = function encodeDelimited(message, writer) {
+                            return this.encode(message, writer).ldelim();
+                        };
     
-                    /**
-                     * Decodes an ExecuteBatchDmlRequest message from the specified reader or buffer.
-                     * @function decode
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
-                     */
-                    ExecuteBatchDmlRequest.decode = function decode(reader, length) {
-                        if (!(reader instanceof $Reader))
-                            reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlRequest();
-                        while (reader.pos < end) {
-                            var tag = reader.uint32();
-                            switch (tag >>> 3) {
-                            case 1: {
-                                    message.session = reader.string();
-                                    break;
-                                }
-                            case 2: {
-                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 3: {
-                                    if (!(message.statements && message.statements.length))
-                                        message.statements = [];
-                                    message.statements.push($root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.decode(reader, reader.uint32()));
-                                    break;
-                                }
-                            case 4: {
-                                    message.seqno = reader.int64();
+                        /**
+                         * Decodes an IncludeReplicas message from the specified reader or buffer.
+                         * @function decode
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @param {number} [length] Message length if known beforehand
+                         * @returns {google.spanner.v1.DirectedReadOptions.IncludeReplicas} IncludeReplicas
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        IncludeReplicas.decode = function decode(reader, length) {
+                            if (!(reader instanceof $Reader))
+                                reader = $Reader.create(reader);
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas();
+                            while (reader.pos < end) {
+                                var tag = reader.uint32();
+                                switch (tag >>> 3) {
+                                case 1: {
+                                        if (!(message.replicaSelections && message.replicaSelections.length))
+                                            message.replicaSelections = [];
+                                        message.replicaSelections.push($root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.decode(reader, reader.uint32()));
+                                        break;
+                                    }
+                                case 2: {
+                                        message.autoFailoverDisabled = reader.bool();
+                                        break;
+                                    }
+                                default:
+                                    reader.skipType(tag & 7);
                                     break;
                                 }
-                            case 5: {
-                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
-                                    break;
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Decodes an IncludeReplicas message from the specified reader or buffer, length delimited.
+                         * @function decodeDelimited
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @returns {google.spanner.v1.DirectedReadOptions.IncludeReplicas} IncludeReplicas
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        IncludeReplicas.decodeDelimited = function decodeDelimited(reader) {
+                            if (!(reader instanceof $Reader))
+                                reader = new $Reader(reader);
+                            return this.decode(reader, reader.uint32());
+                        };
+    
+                        /**
+                         * Verifies an IncludeReplicas message.
+                         * @function verify
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {Object.<string,*>} message Plain object to verify
+                         * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                         */
+                        IncludeReplicas.verify = function verify(message) {
+                            if (typeof message !== "object" || message === null)
+                                return "object expected";
+                            if (message.replicaSelections != null && message.hasOwnProperty("replicaSelections")) {
+                                if (!Array.isArray(message.replicaSelections))
+                                    return "replicaSelections: array expected";
+                                for (var i = 0; i < message.replicaSelections.length; ++i) {
+                                    var error = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify(message.replicaSelections[i]);
+                                    if (error)
+                                        return "replicaSelections." + error;
                                 }
-                            default:
-                                reader.skipType(tag & 7);
-                                break;
                             }
-                        }
-                        return message;
-                    };
+                            if (message.autoFailoverDisabled != null && message.hasOwnProperty("autoFailoverDisabled"))
+                                if (typeof message.autoFailoverDisabled !== "boolean")
+                                    return "autoFailoverDisabled: boolean expected";
+                            return null;
+                        };
     
-                    /**
-                     * Decodes an ExecuteBatchDmlRequest message from the specified reader or buffer, length delimited.
-                     * @function decodeDelimited
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
-                     */
-                    ExecuteBatchDmlRequest.decodeDelimited = function decodeDelimited(reader) {
-                        if (!(reader instanceof $Reader))
-                            reader = new $Reader(reader);
-                        return this.decode(reader, reader.uint32());
-                    };
-    
-                    /**
-                     * Verifies an ExecuteBatchDmlRequest message.
-                     * @function verify
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {Object.<string,*>} message Plain object to verify
-                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
-                     */
-                    ExecuteBatchDmlRequest.verify = function verify(message) {
-                        if (typeof message !== "object" || message === null)
-                            return "object expected";
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            if (!$util.isString(message.session))
-                                return "session: string expected";
-                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
-                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
-                            if (error)
-                                return "transaction." + error;
-                        }
-                        if (message.statements != null && message.hasOwnProperty("statements")) {
-                            if (!Array.isArray(message.statements))
-                                return "statements: array expected";
-                            for (var i = 0; i < message.statements.length; ++i) {
-                                var error = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify(message.statements[i]);
-                                if (error)
-                                    return "statements." + error;
-                            }
-                        }
-                        if (message.seqno != null && message.hasOwnProperty("seqno"))
-                            if (!$util.isInteger(message.seqno) && !(message.seqno && $util.isInteger(message.seqno.low) && $util.isInteger(message.seqno.high)))
-                                return "seqno: integer|Long expected";
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
-                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
-                            if (error)
-                                return "requestOptions." + error;
-                        }
-                        return null;
-                    };
+                        /**
+                         * Creates an IncludeReplicas message from a plain object. Also converts values to their respective internal types.
+                         * @function fromObject
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {Object.<string,*>} object Plain object
+                         * @returns {google.spanner.v1.DirectedReadOptions.IncludeReplicas} IncludeReplicas
+                         */
+                        IncludeReplicas.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas)
+                                return object;
+                            var message = new $root.google.spanner.v1.DirectedReadOptions.IncludeReplicas();
+                            if (object.replicaSelections) {
+                                if (!Array.isArray(object.replicaSelections))
+                                    throw TypeError(".google.spanner.v1.DirectedReadOptions.IncludeReplicas.replicaSelections: array expected");
+                                message.replicaSelections = [];
+                                for (var i = 0; i < object.replicaSelections.length; ++i) {
+                                    if (typeof object.replicaSelections[i] !== "object")
+                                        throw TypeError(".google.spanner.v1.DirectedReadOptions.IncludeReplicas.replicaSelections: object expected");
+                                    message.replicaSelections[i] = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.fromObject(object.replicaSelections[i]);
+                                }
+                            }
+                            if (object.autoFailoverDisabled != null)
+                                message.autoFailoverDisabled = Boolean(object.autoFailoverDisabled);
+                            return message;
+                        };
     
-                    /**
-                     * Creates an ExecuteBatchDmlRequest message from a plain object. Also converts values to their respective internal types.
-                     * @function fromObject
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
-                     */
-                    ExecuteBatchDmlRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlRequest)
+                        /**
+                         * Creates a plain object from an IncludeReplicas message. Also converts values to other types if specified.
+                         * @function toObject
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {google.spanner.v1.DirectedReadOptions.IncludeReplicas} message IncludeReplicas
+                         * @param {$protobuf.IConversionOptions} [options] Conversion options
+                         * @returns {Object.<string,*>} Plain object
+                         */
+                        IncludeReplicas.toObject = function toObject(message, options) {
+                            if (!options)
+                                options = {};
+                            var object = {};
+                            if (options.arrays || options.defaults)
+                                object.replicaSelections = [];
+                            if (options.defaults)
+                                object.autoFailoverDisabled = false;
+                            if (message.replicaSelections && message.replicaSelections.length) {
+                                object.replicaSelections = [];
+                                for (var j = 0; j < message.replicaSelections.length; ++j)
+                                    object.replicaSelections[j] = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.toObject(message.replicaSelections[j], options);
+                            }
+                            if (message.autoFailoverDisabled != null && message.hasOwnProperty("autoFailoverDisabled"))
+                                object.autoFailoverDisabled = message.autoFailoverDisabled;
                             return object;
-                        var message = new $root.google.spanner.v1.ExecuteBatchDmlRequest();
-                        if (object.session != null)
-                            message.session = String(object.session);
-                        if (object.transaction != null) {
-                            if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.transaction: object expected");
-                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
-                        }
-                        if (object.statements) {
-                            if (!Array.isArray(object.statements))
-                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.statements: array expected");
-                            message.statements = [];
-                            for (var i = 0; i < object.statements.length; ++i) {
-                                if (typeof object.statements[i] !== "object")
-                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.statements: object expected");
-                                message.statements[i] = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.fromObject(object.statements[i]);
-                            }
-                        }
-                        if (object.seqno != null)
-                            if ($util.Long)
-                                (message.seqno = $util.Long.fromValue(object.seqno)).unsigned = false;
-                            else if (typeof object.seqno === "string")
-                                message.seqno = parseInt(object.seqno, 10);
-                            else if (typeof object.seqno === "number")
-                                message.seqno = object.seqno;
-                            else if (typeof object.seqno === "object")
-                                message.seqno = new $util.LongBits(object.seqno.low >>> 0, object.seqno.high >>> 0).toNumber();
-                        if (object.requestOptions != null) {
-                            if (typeof object.requestOptions !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.requestOptions: object expected");
-                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
-                        }
-                        return message;
-                    };
+                        };
     
-                    /**
-                     * Creates a plain object from an ExecuteBatchDmlRequest message. Also converts values to other types if specified.
-                     * @function toObject
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {google.spanner.v1.ExecuteBatchDmlRequest} message ExecuteBatchDmlRequest
-                     * @param {$protobuf.IConversionOptions} [options] Conversion options
-                     * @returns {Object.<string,*>} Plain object
-                     */
-                    ExecuteBatchDmlRequest.toObject = function toObject(message, options) {
-                        if (!options)
-                            options = {};
-                        var object = {};
-                        if (options.arrays || options.defaults)
-                            object.statements = [];
-                        if (options.defaults) {
-                            object.session = "";
-                            object.transaction = null;
-                            if ($util.Long) {
-                                var long = new $util.Long(0, 0, false);
-                                object.seqno = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
-                            } else
-                                object.seqno = options.longs === String ? "0" : 0;
-                            object.requestOptions = null;
-                        }
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            object.session = message.session;
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
-                        if (message.statements && message.statements.length) {
-                            object.statements = [];
-                            for (var j = 0; j < message.statements.length; ++j)
-                                object.statements[j] = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.toObject(message.statements[j], options);
-                        }
-                        if (message.seqno != null && message.hasOwnProperty("seqno"))
-                            if (typeof message.seqno === "number")
-                                object.seqno = options.longs === String ? String(message.seqno) : message.seqno;
-                            else
-                                object.seqno = options.longs === String ? $util.Long.prototype.toString.call(message.seqno) : options.longs === Number ? new $util.LongBits(message.seqno.low >>> 0, message.seqno.high >>> 0).toNumber() : message.seqno;
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
-                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
-                        return object;
-                    };
+                        /**
+                         * Converts this IncludeReplicas to JSON.
+                         * @function toJSON
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @instance
+                         * @returns {Object.<string,*>} JSON object
+                         */
+                        IncludeReplicas.prototype.toJSON = function toJSON() {
+                            return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                        };
     
-                    /**
-                     * Converts this ExecuteBatchDmlRequest to JSON.
-                     * @function toJSON
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @instance
-                     * @returns {Object.<string,*>} JSON object
-                     */
-                    ExecuteBatchDmlRequest.prototype.toJSON = function toJSON() {
-                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
-                    };
+                        /**
+                         * Gets the default type url for IncludeReplicas
+                         * @function getTypeUrl
+                         * @memberof google.spanner.v1.DirectedReadOptions.IncludeReplicas
+                         * @static
+                         * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                         * @returns {string} The default type url
+                         */
+                        IncludeReplicas.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                            if (typeUrlPrefix === undefined) {
+                                typeUrlPrefix = "type.googleapis.com";
+                            }
+                            return typeUrlPrefix + "/google.spanner.v1.DirectedReadOptions.IncludeReplicas";
+                        };
     
-                    /**
-                     * Gets the default type url for ExecuteBatchDmlRequest
-                     * @function getTypeUrl
-                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                     * @static
-                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
-                     * @returns {string} The default type url
-                     */
-                    ExecuteBatchDmlRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
-                        if (typeUrlPrefix === undefined) {
-                            typeUrlPrefix = "type.googleapis.com";
-                        }
-                        return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlRequest";
-                    };
+                        return IncludeReplicas;
+                    })();
     
-                    ExecuteBatchDmlRequest.Statement = (function() {
+                    DirectedReadOptions.ExcludeReplicas = (function() {
     
                         /**
-                         * Properties of a Statement.
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                         * @interface IStatement
-                         * @property {string|null} [sql] Statement sql
-                         * @property {google.protobuf.IStruct|null} [params] Statement params
-                         * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] Statement paramTypes
+                         * Properties of an ExcludeReplicas.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @interface IExcludeReplicas
+                         * @property {Array.<google.spanner.v1.DirectedReadOptions.IReplicaSelection>|null} [replicaSelections] ExcludeReplicas replicaSelections
                          */
     
                         /**
-                         * Constructs a new Statement.
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest
-                         * @classdesc Represents a Statement.
-                         * @implements IStatement
+                         * Constructs a new ExcludeReplicas.
+                         * @memberof google.spanner.v1.DirectedReadOptions
+                         * @classdesc Represents an ExcludeReplicas.
+                         * @implements IExcludeReplicas
                          * @constructor
-                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement=} [properties] Properties to set
+                         * @param {google.spanner.v1.DirectedReadOptions.IExcludeReplicas=} [properties] Properties to set
                          */
-                        function Statement(properties) {
-                            this.paramTypes = {};
+                        function ExcludeReplicas(properties) {
+                            this.replicaSelections = [];
                             if (properties)
                                 for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                     if (properties[keys[i]] != null)
@@ -45230,125 +47262,78 @@
                         }
     
                         /**
-                         * Statement sql.
-                         * @member {string} sql
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
-                         * @instance
-                         */
-                        Statement.prototype.sql = "";
-    
-                        /**
-                         * Statement params.
-                         * @member {google.protobuf.IStruct|null|undefined} params
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
-                         * @instance
-                         */
-                        Statement.prototype.params = null;
-    
-                        /**
-                         * Statement paramTypes.
-                         * @member {Object.<string,google.spanner.v1.IType>} paramTypes
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * ExcludeReplicas replicaSelections.
+                         * @member {Array.<google.spanner.v1.DirectedReadOptions.IReplicaSelection>} replicaSelections
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @instance
                          */
-                        Statement.prototype.paramTypes = $util.emptyObject;
+                        ExcludeReplicas.prototype.replicaSelections = $util.emptyArray;
     
                         /**
-                         * Creates a new Statement instance using the specified properties.
+                         * Creates a new ExcludeReplicas instance using the specified properties.
                          * @function create
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
-                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement=} [properties] Properties to set
-                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement instance
+                         * @param {google.spanner.v1.DirectedReadOptions.IExcludeReplicas=} [properties] Properties to set
+                         * @returns {google.spanner.v1.DirectedReadOptions.ExcludeReplicas} ExcludeReplicas instance
                          */
-                        Statement.create = function create(properties) {
-                            return new Statement(properties);
+                        ExcludeReplicas.create = function create(properties) {
+                            return new ExcludeReplicas(properties);
                         };
     
                         /**
-                         * Encodes the specified Statement message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify|verify} messages.
+                         * Encodes the specified ExcludeReplicas message. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ExcludeReplicas.verify|verify} messages.
                          * @function encode
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
-                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement} message Statement message or plain object to encode
+                         * @param {google.spanner.v1.DirectedReadOptions.IExcludeReplicas} message ExcludeReplicas message or plain object to encode
                          * @param {$protobuf.Writer} [writer] Writer to encode to
                          * @returns {$protobuf.Writer} Writer
                          */
-                        Statement.encode = function encode(message, writer) {
+                        ExcludeReplicas.encode = function encode(message, writer) {
                             if (!writer)
                                 writer = $Writer.create();
-                            if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
-                                writer.uint32(/* id 1, wireType 2 =*/10).string(message.sql);
-                            if (message.params != null && Object.hasOwnProperty.call(message, "params"))
-                                $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                            if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
-                                for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
-                                    writer.uint32(/* id 3, wireType 2 =*/26).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
-                                    $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
-                                }
+                            if (message.replicaSelections != null && message.replicaSelections.length)
+                                for (var i = 0; i < message.replicaSelections.length; ++i)
+                                    $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.encode(message.replicaSelections[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
                             return writer;
                         };
     
                         /**
-                         * Encodes the specified Statement message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify|verify} messages.
+                         * Encodes the specified ExcludeReplicas message, length delimited. Does not implicitly {@link google.spanner.v1.DirectedReadOptions.ExcludeReplicas.verify|verify} messages.
                          * @function encodeDelimited
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
-                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement} message Statement message or plain object to encode
+                         * @param {google.spanner.v1.DirectedReadOptions.IExcludeReplicas} message ExcludeReplicas message or plain object to encode
                          * @param {$protobuf.Writer} [writer] Writer to encode to
                          * @returns {$protobuf.Writer} Writer
                          */
-                        Statement.encodeDelimited = function encodeDelimited(message, writer) {
+                        ExcludeReplicas.encodeDelimited = function encodeDelimited(message, writer) {
                             return this.encode(message, writer).ldelim();
                         };
     
                         /**
-                         * Decodes a Statement message from the specified reader or buffer.
+                         * Decodes an ExcludeReplicas message from the specified reader or buffer.
                          * @function decode
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
                          * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                          * @param {number} [length] Message length if known beforehand
-                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         * @returns {google.spanner.v1.DirectedReadOptions.ExcludeReplicas} ExcludeReplicas
                          * @throws {Error} If the payload is not a reader or valid buffer
                          * @throws {$protobuf.util.ProtocolError} If required fields are missing
                          */
-                        Statement.decode = function decode(reader, length) {
+                        ExcludeReplicas.decode = function decode(reader, length) {
                             if (!(reader instanceof $Reader))
                                 reader = $Reader.create(reader);
-                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement(), key, value;
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas();
                             while (reader.pos < end) {
                                 var tag = reader.uint32();
                                 switch (tag >>> 3) {
                                 case 1: {
-                                        message.sql = reader.string();
-                                        break;
-                                    }
-                                case 2: {
-                                        message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
-                                        break;
-                                    }
-                                case 3: {
-                                        if (message.paramTypes === $util.emptyObject)
-                                            message.paramTypes = {};
-                                        var end2 = reader.uint32() + reader.pos;
-                                        key = "";
-                                        value = null;
-                                        while (reader.pos < end2) {
-                                            var tag2 = reader.uint32();
-                                            switch (tag2 >>> 3) {
-                                            case 1:
-                                                key = reader.string();
-                                                break;
-                                            case 2:
-                                                value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
-                                                break;
-                                            default:
-                                                reader.skipType(tag2 & 7);
-                                                break;
-                                            }
-                                        }
-                                        message.paramTypes[key] = value;
+                                        if (!(message.replicaSelections && message.replicaSelections.length))
+                                            message.replicaSelections = [];
+                                        message.replicaSelections.push($root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.decode(reader, reader.uint32()));
                                         break;
                                     }
                                 default:
@@ -45360,169 +47345,155 @@
                         };
     
                         /**
-                         * Decodes a Statement message from the specified reader or buffer, length delimited.
+                         * Decodes an ExcludeReplicas message from the specified reader or buffer, length delimited.
                          * @function decodeDelimited
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
                          * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         * @returns {google.spanner.v1.DirectedReadOptions.ExcludeReplicas} ExcludeReplicas
                          * @throws {Error} If the payload is not a reader or valid buffer
                          * @throws {$protobuf.util.ProtocolError} If required fields are missing
                          */
-                        Statement.decodeDelimited = function decodeDelimited(reader) {
+                        ExcludeReplicas.decodeDelimited = function decodeDelimited(reader) {
                             if (!(reader instanceof $Reader))
                                 reader = new $Reader(reader);
                             return this.decode(reader, reader.uint32());
                         };
     
                         /**
-                         * Verifies a Statement message.
+                         * Verifies an ExcludeReplicas message.
                          * @function verify
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
                          * @param {Object.<string,*>} message Plain object to verify
                          * @returns {string|null} `null` if valid, otherwise the reason why it is not
                          */
-                        Statement.verify = function verify(message) {
+                        ExcludeReplicas.verify = function verify(message) {
                             if (typeof message !== "object" || message === null)
                                 return "object expected";
-                            if (message.sql != null && message.hasOwnProperty("sql"))
-                                if (!$util.isString(message.sql))
-                                    return "sql: string expected";
-                            if (message.params != null && message.hasOwnProperty("params")) {
-                                var error = $root.google.protobuf.Struct.verify(message.params);
-                                if (error)
-                                    return "params." + error;
-                            }
-                            if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
-                                if (!$util.isObject(message.paramTypes))
-                                    return "paramTypes: object expected";
-                                var key = Object.keys(message.paramTypes);
-                                for (var i = 0; i < key.length; ++i) {
-                                    var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
+                            if (message.replicaSelections != null && message.hasOwnProperty("replicaSelections")) {
+                                if (!Array.isArray(message.replicaSelections))
+                                    return "replicaSelections: array expected";
+                                for (var i = 0; i < message.replicaSelections.length; ++i) {
+                                    var error = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.verify(message.replicaSelections[i]);
                                     if (error)
-                                        return "paramTypes." + error;
+                                        return "replicaSelections." + error;
                                 }
                             }
                             return null;
                         };
     
                         /**
-                         * Creates a Statement message from a plain object. Also converts values to their respective internal types.
+                         * Creates an ExcludeReplicas message from a plain object. Also converts values to their respective internal types.
                          * @function fromObject
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
                          * @param {Object.<string,*>} object Plain object
-                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         * @returns {google.spanner.v1.DirectedReadOptions.ExcludeReplicas} ExcludeReplicas
                          */
-                        Statement.fromObject = function fromObject(object) {
-                            if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement)
+                        ExcludeReplicas.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas)
                                 return object;
-                            var message = new $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement();
-                            if (object.sql != null)
-                                message.sql = String(object.sql);
-                            if (object.params != null) {
-                                if (typeof object.params !== "object")
-                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.params: object expected");
-                                message.params = $root.google.protobuf.Struct.fromObject(object.params);
-                            }
-                            if (object.paramTypes) {
-                                if (typeof object.paramTypes !== "object")
-                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.paramTypes: object expected");
-                                message.paramTypes = {};
-                                for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
-                                    if (typeof object.paramTypes[keys[i]] !== "object")
-                                        throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.paramTypes: object expected");
-                                    message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
+                            var message = new $root.google.spanner.v1.DirectedReadOptions.ExcludeReplicas();
+                            if (object.replicaSelections) {
+                                if (!Array.isArray(object.replicaSelections))
+                                    throw TypeError(".google.spanner.v1.DirectedReadOptions.ExcludeReplicas.replicaSelections: array expected");
+                                message.replicaSelections = [];
+                                for (var i = 0; i < object.replicaSelections.length; ++i) {
+                                    if (typeof object.replicaSelections[i] !== "object")
+                                        throw TypeError(".google.spanner.v1.DirectedReadOptions.ExcludeReplicas.replicaSelections: object expected");
+                                    message.replicaSelections[i] = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.fromObject(object.replicaSelections[i]);
                                 }
                             }
                             return message;
                         };
     
                         /**
-                         * Creates a plain object from a Statement message. Also converts values to other types if specified.
+                         * Creates a plain object from an ExcludeReplicas message. Also converts values to other types if specified.
                          * @function toObject
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
-                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.Statement} message Statement
+                         * @param {google.spanner.v1.DirectedReadOptions.ExcludeReplicas} message ExcludeReplicas
                          * @param {$protobuf.IConversionOptions} [options] Conversion options
                          * @returns {Object.<string,*>} Plain object
                          */
-                        Statement.toObject = function toObject(message, options) {
+                        ExcludeReplicas.toObject = function toObject(message, options) {
                             if (!options)
                                 options = {};
                             var object = {};
-                            if (options.objects || options.defaults)
-                                object.paramTypes = {};
-                            if (options.defaults) {
-                                object.sql = "";
-                                object.params = null;
-                            }
-                            if (message.sql != null && message.hasOwnProperty("sql"))
-                                object.sql = message.sql;
-                            if (message.params != null && message.hasOwnProperty("params"))
-                                object.params = $root.google.protobuf.Struct.toObject(message.params, options);
-                            var keys2;
-                            if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
-                                object.paramTypes = {};
-                                for (var j = 0; j < keys2.length; ++j)
-                                    object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                            if (options.arrays || options.defaults)
+                                object.replicaSelections = [];
+                            if (message.replicaSelections && message.replicaSelections.length) {
+                                object.replicaSelections = [];
+                                for (var j = 0; j < message.replicaSelections.length; ++j)
+                                    object.replicaSelections[j] = $root.google.spanner.v1.DirectedReadOptions.ReplicaSelection.toObject(message.replicaSelections[j], options);
                             }
                             return object;
                         };
     
                         /**
-                         * Converts this Statement to JSON.
+                         * Converts this ExcludeReplicas to JSON.
                          * @function toJSON
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @instance
                          * @returns {Object.<string,*>} JSON object
                          */
-                        Statement.prototype.toJSON = function toJSON() {
+                        ExcludeReplicas.prototype.toJSON = function toJSON() {
                             return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                         };
     
                         /**
-                         * Gets the default type url for Statement
+                         * Gets the default type url for ExcludeReplicas
                          * @function getTypeUrl
-                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @memberof google.spanner.v1.DirectedReadOptions.ExcludeReplicas
                          * @static
                          * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                          * @returns {string} The default type url
                          */
-                        Statement.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        ExcludeReplicas.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                             if (typeUrlPrefix === undefined) {
                                 typeUrlPrefix = "type.googleapis.com";
                             }
-                            return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlRequest.Statement";
+                            return typeUrlPrefix + "/google.spanner.v1.DirectedReadOptions.ExcludeReplicas";
                         };
     
-                        return Statement;
+                        return ExcludeReplicas;
                     })();
     
-                    return ExecuteBatchDmlRequest;
+                    return DirectedReadOptions;
                 })();
     
-                v1.ExecuteBatchDmlResponse = (function() {
+                v1.ExecuteSqlRequest = (function() {
     
                     /**
-                     * Properties of an ExecuteBatchDmlResponse.
+                     * Properties of an ExecuteSqlRequest.
                      * @memberof google.spanner.v1
-                     * @interface IExecuteBatchDmlResponse
-                     * @property {Array.<google.spanner.v1.IResultSet>|null} [resultSets] ExecuteBatchDmlResponse resultSets
-                     * @property {google.rpc.IStatus|null} [status] ExecuteBatchDmlResponse status
+                     * @interface IExecuteSqlRequest
+                     * @property {string|null} [session] ExecuteSqlRequest session
+                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ExecuteSqlRequest transaction
+                     * @property {string|null} [sql] ExecuteSqlRequest sql
+                     * @property {google.protobuf.IStruct|null} [params] ExecuteSqlRequest params
+                     * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] ExecuteSqlRequest paramTypes
+                     * @property {Uint8Array|null} [resumeToken] ExecuteSqlRequest resumeToken
+                     * @property {google.spanner.v1.ExecuteSqlRequest.QueryMode|null} [queryMode] ExecuteSqlRequest queryMode
+                     * @property {Uint8Array|null} [partitionToken] ExecuteSqlRequest partitionToken
+                     * @property {number|Long|null} [seqno] ExecuteSqlRequest seqno
+                     * @property {google.spanner.v1.ExecuteSqlRequest.IQueryOptions|null} [queryOptions] ExecuteSqlRequest queryOptions
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ExecuteSqlRequest requestOptions
+                     * @property {google.spanner.v1.IDirectedReadOptions|null} [directedReadOptions] ExecuteSqlRequest directedReadOptions
+                     * @property {boolean|null} [dataBoostEnabled] ExecuteSqlRequest dataBoostEnabled
                      */
     
                     /**
-                     * Constructs a new ExecuteBatchDmlResponse.
+                     * Constructs a new ExecuteSqlRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents an ExecuteBatchDmlResponse.
-                     * @implements IExecuteBatchDmlResponse
+                     * @classdesc Represents an ExecuteSqlRequest.
+                     * @implements IExecuteSqlRequest
                      * @constructor
-                     * @param {google.spanner.v1.IExecuteBatchDmlResponse=} [properties] Properties to set
+                     * @param {google.spanner.v1.IExecuteSqlRequest=} [properties] Properties to set
                      */
-                    function ExecuteBatchDmlResponse(properties) {
-                        this.resultSets = [];
+                    function ExecuteSqlRequest(properties) {
+                        this.paramTypes = {};
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -45530,111 +47501,1587 @@
                     }
     
                     /**
-                     * ExecuteBatchDmlResponse resultSets.
-                     * @member {Array.<google.spanner.v1.IResultSet>} resultSets
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * ExecuteSqlRequest session.
+                     * @member {string} session
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
                      * @instance
                      */
-                    ExecuteBatchDmlResponse.prototype.resultSets = $util.emptyArray;
+                    ExecuteSqlRequest.prototype.session = "";
     
                     /**
-                     * ExecuteBatchDmlResponse status.
-                     * @member {google.rpc.IStatus|null|undefined} status
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * ExecuteSqlRequest transaction.
+                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
                      * @instance
                      */
-                    ExecuteBatchDmlResponse.prototype.status = null;
+                    ExecuteSqlRequest.prototype.transaction = null;
     
                     /**
-                     * Creates a new ExecuteBatchDmlResponse instance using the specified properties.
-                     * @function create
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlResponse=} [properties] Properties to set
-                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse instance
+                     * ExecuteSqlRequest sql.
+                     * @member {string} sql
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
                      */
-                    ExecuteBatchDmlResponse.create = function create(properties) {
-                        return new ExecuteBatchDmlResponse(properties);
-                    };
+                    ExecuteSqlRequest.prototype.sql = "";
     
                     /**
-                     * Encodes the specified ExecuteBatchDmlResponse message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlResponse.verify|verify} messages.
-                     * @function encode
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlResponse} message ExecuteBatchDmlResponse message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
+                     * ExecuteSqlRequest params.
+                     * @member {google.protobuf.IStruct|null|undefined} params
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
                      */
-                    ExecuteBatchDmlResponse.encode = function encode(message, writer) {
-                        if (!writer)
-                            writer = $Writer.create();
-                        if (message.resultSets != null && message.resultSets.length)
-                            for (var i = 0; i < message.resultSets.length; ++i)
-                                $root.google.spanner.v1.ResultSet.encode(message.resultSets[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
-                        if (message.status != null && Object.hasOwnProperty.call(message, "status"))
-                            $root.google.rpc.Status.encode(message.status, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        return writer;
-                    };
+                    ExecuteSqlRequest.prototype.params = null;
     
                     /**
-                     * Encodes the specified ExecuteBatchDmlResponse message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlResponse.verify|verify} messages.
-                     * @function encodeDelimited
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
-                     * @static
-                     * @param {google.spanner.v1.IExecuteBatchDmlResponse} message ExecuteBatchDmlResponse message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
+                     * ExecuteSqlRequest paramTypes.
+                     * @member {Object.<string,google.spanner.v1.IType>} paramTypes
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
                      */
-                    ExecuteBatchDmlResponse.encodeDelimited = function encodeDelimited(message, writer) {
-                        return this.encode(message, writer).ldelim();
-                    };
+                    ExecuteSqlRequest.prototype.paramTypes = $util.emptyObject;
     
                     /**
-                     * Decodes an ExecuteBatchDmlResponse message from the specified reader or buffer.
-                     * @function decode
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     * ExecuteSqlRequest resumeToken.
+                     * @member {Uint8Array} resumeToken
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
                      */
-                    ExecuteBatchDmlResponse.decode = function decode(reader, length) {
-                        if (!(reader instanceof $Reader))
-                            reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlResponse();
-                        while (reader.pos < end) {
-                            var tag = reader.uint32();
-                            switch (tag >>> 3) {
-                            case 1: {
-                                    if (!(message.resultSets && message.resultSets.length))
-                                        message.resultSets = [];
-                                    message.resultSets.push($root.google.spanner.v1.ResultSet.decode(reader, reader.uint32()));
-                                    break;
-                                }
-                            case 2: {
-                                    message.status = $root.google.rpc.Status.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            default:
-                                reader.skipType(tag & 7);
-                                break;
-                            }
-                        }
-                        return message;
-                    };
+                    ExecuteSqlRequest.prototype.resumeToken = $util.newBuffer([]);
     
                     /**
-                     * Decodes an ExecuteBatchDmlResponse message from the specified reader or buffer, length delimited.
-                     * @function decodeDelimited
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     * ExecuteSqlRequest queryMode.
+                     * @member {google.spanner.v1.ExecuteSqlRequest.QueryMode} queryMode
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.queryMode = 0;
+    
+                    /**
+                     * ExecuteSqlRequest partitionToken.
+                     * @member {Uint8Array} partitionToken
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.partitionToken = $util.newBuffer([]);
+    
+                    /**
+                     * ExecuteSqlRequest seqno.
+                     * @member {number|Long} seqno
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.seqno = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+    
+                    /**
+                     * ExecuteSqlRequest queryOptions.
+                     * @member {google.spanner.v1.ExecuteSqlRequest.IQueryOptions|null|undefined} queryOptions
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.queryOptions = null;
+    
+                    /**
+                     * ExecuteSqlRequest requestOptions.
+                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.requestOptions = null;
+    
+                    /**
+                     * ExecuteSqlRequest directedReadOptions.
+                     * @member {google.spanner.v1.IDirectedReadOptions|null|undefined} directedReadOptions
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.directedReadOptions = null;
+    
+                    /**
+                     * ExecuteSqlRequest dataBoostEnabled.
+                     * @member {boolean} dataBoostEnabled
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     */
+                    ExecuteSqlRequest.prototype.dataBoostEnabled = false;
+    
+                    /**
+                     * Creates a new ExecuteSqlRequest instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteSqlRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest instance
+                     */
+                    ExecuteSqlRequest.create = function create(properties) {
+                        return new ExecuteSqlRequest(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteSqlRequest message. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteSqlRequest} message ExecuteSqlRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteSqlRequest.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
+                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
+                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.sql);
+                        if (message.params != null && Object.hasOwnProperty.call(message, "params"))
+                            $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
+                        if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
+                            for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
+                                writer.uint32(/* id 5, wireType 2 =*/42).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
+                                $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
+                            }
+                        if (message.resumeToken != null && Object.hasOwnProperty.call(message, "resumeToken"))
+                            writer.uint32(/* id 6, wireType 2 =*/50).bytes(message.resumeToken);
+                        if (message.queryMode != null && Object.hasOwnProperty.call(message, "queryMode"))
+                            writer.uint32(/* id 7, wireType 0 =*/56).int32(message.queryMode);
+                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
+                            writer.uint32(/* id 8, wireType 2 =*/66).bytes(message.partitionToken);
+                        if (message.seqno != null && Object.hasOwnProperty.call(message, "seqno"))
+                            writer.uint32(/* id 9, wireType 0 =*/72).int64(message.seqno);
+                        if (message.queryOptions != null && Object.hasOwnProperty.call(message, "queryOptions"))
+                            $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.encode(message.queryOptions, writer.uint32(/* id 10, wireType 2 =*/82).fork()).ldelim();
+                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
+                        if (message.directedReadOptions != null && Object.hasOwnProperty.call(message, "directedReadOptions"))
+                            $root.google.spanner.v1.DirectedReadOptions.encode(message.directedReadOptions, writer.uint32(/* id 15, wireType 2 =*/122).fork()).ldelim();
+                        if (message.dataBoostEnabled != null && Object.hasOwnProperty.call(message, "dataBoostEnabled"))
+                            writer.uint32(/* id 16, wireType 0 =*/128).bool(message.dataBoostEnabled);
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteSqlRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteSqlRequest} message ExecuteSqlRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteSqlRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes an ExecuteSqlRequest message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    ExecuteSqlRequest.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteSqlRequest(), key, value;
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.session = reader.string();
+                                    break;
+                                }
+                            case 2: {
+                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    message.sql = reader.string();
+                                    break;
+                                }
+                            case 4: {
+                                    message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 5: {
+                                    if (message.paramTypes === $util.emptyObject)
+                                        message.paramTypes = {};
+                                    var end2 = reader.uint32() + reader.pos;
+                                    key = "";
+                                    value = null;
+                                    while (reader.pos < end2) {
+                                        var tag2 = reader.uint32();
+                                        switch (tag2 >>> 3) {
+                                        case 1:
+                                            key = reader.string();
+                                            break;
+                                        case 2:
+                                            value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
+                                            break;
+                                        default:
+                                            reader.skipType(tag2 & 7);
+                                            break;
+                                        }
+                                    }
+                                    message.paramTypes[key] = value;
+                                    break;
+                                }
+                            case 6: {
+                                    message.resumeToken = reader.bytes();
+                                    break;
+                                }
+                            case 7: {
+                                    message.queryMode = reader.int32();
+                                    break;
+                                }
+                            case 8: {
+                                    message.partitionToken = reader.bytes();
+                                    break;
+                                }
+                            case 9: {
+                                    message.seqno = reader.int64();
+                                    break;
+                                }
+                            case 10: {
+                                    message.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 11: {
+                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 15: {
+                                    message.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 16: {
+                                    message.dataBoostEnabled = reader.bool();
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes an ExecuteSqlRequest message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    ExecuteSqlRequest.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies an ExecuteSqlRequest message.
+                     * @function verify
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    ExecuteSqlRequest.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            if (!$util.isString(message.session))
+                                return "session: string expected";
+                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
+                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
+                            if (error)
+                                return "transaction." + error;
+                        }
+                        if (message.sql != null && message.hasOwnProperty("sql"))
+                            if (!$util.isString(message.sql))
+                                return "sql: string expected";
+                        if (message.params != null && message.hasOwnProperty("params")) {
+                            var error = $root.google.protobuf.Struct.verify(message.params);
+                            if (error)
+                                return "params." + error;
+                        }
+                        if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
+                            if (!$util.isObject(message.paramTypes))
+                                return "paramTypes: object expected";
+                            var key = Object.keys(message.paramTypes);
+                            for (var i = 0; i < key.length; ++i) {
+                                var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
+                                if (error)
+                                    return "paramTypes." + error;
+                            }
+                        }
+                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
+                            if (!(message.resumeToken && typeof message.resumeToken.length === "number" || $util.isString(message.resumeToken)))
+                                return "resumeToken: buffer expected";
+                        if (message.queryMode != null && message.hasOwnProperty("queryMode"))
+                            switch (message.queryMode) {
+                            default:
+                                return "queryMode: enum value expected";
+                            case 0:
+                            case 1:
+                            case 2:
+                                break;
+                            }
+                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
+                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
+                                return "partitionToken: buffer expected";
+                        if (message.seqno != null && message.hasOwnProperty("seqno"))
+                            if (!$util.isInteger(message.seqno) && !(message.seqno && $util.isInteger(message.seqno.low) && $util.isInteger(message.seqno.high)))
+                                return "seqno: integer|Long expected";
+                        if (message.queryOptions != null && message.hasOwnProperty("queryOptions")) {
+                            var error = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify(message.queryOptions);
+                            if (error)
+                                return "queryOptions." + error;
+                        }
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
+                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
+                            if (error)
+                                return "requestOptions." + error;
+                        }
+                        if (message.directedReadOptions != null && message.hasOwnProperty("directedReadOptions")) {
+                            var error = $root.google.spanner.v1.DirectedReadOptions.verify(message.directedReadOptions);
+                            if (error)
+                                return "directedReadOptions." + error;
+                        }
+                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
+                            if (typeof message.dataBoostEnabled !== "boolean")
+                                return "dataBoostEnabled: boolean expected";
+                        return null;
+                    };
+    
+                    /**
+                     * Creates an ExecuteSqlRequest message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.spanner.v1.ExecuteSqlRequest} ExecuteSqlRequest
+                     */
+                    ExecuteSqlRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.ExecuteSqlRequest)
+                            return object;
+                        var message = new $root.google.spanner.v1.ExecuteSqlRequest();
+                        if (object.session != null)
+                            message.session = String(object.session);
+                        if (object.transaction != null) {
+                            if (typeof object.transaction !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.transaction: object expected");
+                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
+                        }
+                        if (object.sql != null)
+                            message.sql = String(object.sql);
+                        if (object.params != null) {
+                            if (typeof object.params !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.params: object expected");
+                            message.params = $root.google.protobuf.Struct.fromObject(object.params);
+                        }
+                        if (object.paramTypes) {
+                            if (typeof object.paramTypes !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.paramTypes: object expected");
+                            message.paramTypes = {};
+                            for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
+                                if (typeof object.paramTypes[keys[i]] !== "object")
+                                    throw TypeError(".google.spanner.v1.ExecuteSqlRequest.paramTypes: object expected");
+                                message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
+                            }
+                        }
+                        if (object.resumeToken != null)
+                            if (typeof object.resumeToken === "string")
+                                $util.base64.decode(object.resumeToken, message.resumeToken = $util.newBuffer($util.base64.length(object.resumeToken)), 0);
+                            else if (object.resumeToken.length >= 0)
+                                message.resumeToken = object.resumeToken;
+                        switch (object.queryMode) {
+                        default:
+                            if (typeof object.queryMode === "number") {
+                                message.queryMode = object.queryMode;
+                                break;
+                            }
+                            break;
+                        case "NORMAL":
+                        case 0:
+                            message.queryMode = 0;
+                            break;
+                        case "PLAN":
+                        case 1:
+                            message.queryMode = 1;
+                            break;
+                        case "PROFILE":
+                        case 2:
+                            message.queryMode = 2;
+                            break;
+                        }
+                        if (object.partitionToken != null)
+                            if (typeof object.partitionToken === "string")
+                                $util.base64.decode(object.partitionToken, message.partitionToken = $util.newBuffer($util.base64.length(object.partitionToken)), 0);
+                            else if (object.partitionToken.length >= 0)
+                                message.partitionToken = object.partitionToken;
+                        if (object.seqno != null)
+                            if ($util.Long)
+                                (message.seqno = $util.Long.fromValue(object.seqno)).unsigned = false;
+                            else if (typeof object.seqno === "string")
+                                message.seqno = parseInt(object.seqno, 10);
+                            else if (typeof object.seqno === "number")
+                                message.seqno = object.seqno;
+                            else if (typeof object.seqno === "object")
+                                message.seqno = new $util.LongBits(object.seqno.low >>> 0, object.seqno.high >>> 0).toNumber();
+                        if (object.queryOptions != null) {
+                            if (typeof object.queryOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.queryOptions: object expected");
+                            message.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.fromObject(object.queryOptions);
+                        }
+                        if (object.requestOptions != null) {
+                            if (typeof object.requestOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.requestOptions: object expected");
+                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
+                        }
+                        if (object.directedReadOptions != null) {
+                            if (typeof object.directedReadOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteSqlRequest.directedReadOptions: object expected");
+                            message.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.fromObject(object.directedReadOptions);
+                        }
+                        if (object.dataBoostEnabled != null)
+                            message.dataBoostEnabled = Boolean(object.dataBoostEnabled);
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from an ExecuteSqlRequest message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {google.spanner.v1.ExecuteSqlRequest} message ExecuteSqlRequest
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    ExecuteSqlRequest.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.objects || options.defaults)
+                            object.paramTypes = {};
+                        if (options.defaults) {
+                            object.session = "";
+                            object.transaction = null;
+                            object.sql = "";
+                            object.params = null;
+                            if (options.bytes === String)
+                                object.resumeToken = "";
+                            else {
+                                object.resumeToken = [];
+                                if (options.bytes !== Array)
+                                    object.resumeToken = $util.newBuffer(object.resumeToken);
+                            }
+                            object.queryMode = options.enums === String ? "NORMAL" : 0;
+                            if (options.bytes === String)
+                                object.partitionToken = "";
+                            else {
+                                object.partitionToken = [];
+                                if (options.bytes !== Array)
+                                    object.partitionToken = $util.newBuffer(object.partitionToken);
+                            }
+                            if ($util.Long) {
+                                var long = new $util.Long(0, 0, false);
+                                object.seqno = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
+                            } else
+                                object.seqno = options.longs === String ? "0" : 0;
+                            object.queryOptions = null;
+                            object.requestOptions = null;
+                            object.directedReadOptions = null;
+                            object.dataBoostEnabled = false;
+                        }
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
+                        if (message.sql != null && message.hasOwnProperty("sql"))
+                            object.sql = message.sql;
+                        if (message.params != null && message.hasOwnProperty("params"))
+                            object.params = $root.google.protobuf.Struct.toObject(message.params, options);
+                        var keys2;
+                        if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
+                            object.paramTypes = {};
+                            for (var j = 0; j < keys2.length; ++j)
+                                object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                        }
+                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
+                            object.resumeToken = options.bytes === String ? $util.base64.encode(message.resumeToken, 0, message.resumeToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.resumeToken) : message.resumeToken;
+                        if (message.queryMode != null && message.hasOwnProperty("queryMode"))
+                            object.queryMode = options.enums === String ? $root.google.spanner.v1.ExecuteSqlRequest.QueryMode[message.queryMode] === undefined ? message.queryMode : $root.google.spanner.v1.ExecuteSqlRequest.QueryMode[message.queryMode] : message.queryMode;
+                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
+                            object.partitionToken = options.bytes === String ? $util.base64.encode(message.partitionToken, 0, message.partitionToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.partitionToken) : message.partitionToken;
+                        if (message.seqno != null && message.hasOwnProperty("seqno"))
+                            if (typeof message.seqno === "number")
+                                object.seqno = options.longs === String ? String(message.seqno) : message.seqno;
+                            else
+                                object.seqno = options.longs === String ? $util.Long.prototype.toString.call(message.seqno) : options.longs === Number ? new $util.LongBits(message.seqno.low >>> 0, message.seqno.high >>> 0).toNumber() : message.seqno;
+                        if (message.queryOptions != null && message.hasOwnProperty("queryOptions"))
+                            object.queryOptions = $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions.toObject(message.queryOptions, options);
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
+                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
+                        if (message.directedReadOptions != null && message.hasOwnProperty("directedReadOptions"))
+                            object.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.toObject(message.directedReadOptions, options);
+                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
+                            object.dataBoostEnabled = message.dataBoostEnabled;
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this ExecuteSqlRequest to JSON.
+                     * @function toJSON
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    ExecuteSqlRequest.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for ExecuteSqlRequest
+                     * @function getTypeUrl
+                     * @memberof google.spanner.v1.ExecuteSqlRequest
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    ExecuteSqlRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.spanner.v1.ExecuteSqlRequest";
+                    };
+    
+                    /**
+                     * QueryMode enum.
+                     * @name google.spanner.v1.ExecuteSqlRequest.QueryMode
+                     * @enum {number}
+                     * @property {number} NORMAL=0 NORMAL value
+                     * @property {number} PLAN=1 PLAN value
+                     * @property {number} PROFILE=2 PROFILE value
+                     */
+                    ExecuteSqlRequest.QueryMode = (function() {
+                        var valuesById = {}, values = Object.create(valuesById);
+                        values[valuesById[0] = "NORMAL"] = 0;
+                        values[valuesById[1] = "PLAN"] = 1;
+                        values[valuesById[2] = "PROFILE"] = 2;
+                        return values;
+                    })();
+    
+                    ExecuteSqlRequest.QueryOptions = (function() {
+    
+                        /**
+                         * Properties of a QueryOptions.
+                         * @memberof google.spanner.v1.ExecuteSqlRequest
+                         * @interface IQueryOptions
+                         * @property {string|null} [optimizerVersion] QueryOptions optimizerVersion
+                         * @property {string|null} [optimizerStatisticsPackage] QueryOptions optimizerStatisticsPackage
+                         */
+    
+                        /**
+                         * Constructs a new QueryOptions.
+                         * @memberof google.spanner.v1.ExecuteSqlRequest
+                         * @classdesc Represents a QueryOptions.
+                         * @implements IQueryOptions
+                         * @constructor
+                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions=} [properties] Properties to set
+                         */
+                        function QueryOptions(properties) {
+                            if (properties)
+                                for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                    if (properties[keys[i]] != null)
+                                        this[keys[i]] = properties[keys[i]];
+                        }
+    
+                        /**
+                         * QueryOptions optimizerVersion.
+                         * @member {string} optimizerVersion
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @instance
+                         */
+                        QueryOptions.prototype.optimizerVersion = "";
+    
+                        /**
+                         * QueryOptions optimizerStatisticsPackage.
+                         * @member {string} optimizerStatisticsPackage
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @instance
+                         */
+                        QueryOptions.prototype.optimizerStatisticsPackage = "";
+    
+                        /**
+                         * Creates a new QueryOptions instance using the specified properties.
+                         * @function create
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions=} [properties] Properties to set
+                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions instance
+                         */
+                        QueryOptions.create = function create(properties) {
+                            return new QueryOptions(properties);
+                        };
+    
+                        /**
+                         * Encodes the specified QueryOptions message. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify|verify} messages.
+                         * @function encode
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions} message QueryOptions message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        QueryOptions.encode = function encode(message, writer) {
+                            if (!writer)
+                                writer = $Writer.create();
+                            if (message.optimizerVersion != null && Object.hasOwnProperty.call(message, "optimizerVersion"))
+                                writer.uint32(/* id 1, wireType 2 =*/10).string(message.optimizerVersion);
+                            if (message.optimizerStatisticsPackage != null && Object.hasOwnProperty.call(message, "optimizerStatisticsPackage"))
+                                writer.uint32(/* id 2, wireType 2 =*/18).string(message.optimizerStatisticsPackage);
+                            return writer;
+                        };
+    
+                        /**
+                         * Encodes the specified QueryOptions message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteSqlRequest.QueryOptions.verify|verify} messages.
+                         * @function encodeDelimited
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {google.spanner.v1.ExecuteSqlRequest.IQueryOptions} message QueryOptions message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        QueryOptions.encodeDelimited = function encodeDelimited(message, writer) {
+                            return this.encode(message, writer).ldelim();
+                        };
+    
+                        /**
+                         * Decodes a QueryOptions message from the specified reader or buffer.
+                         * @function decode
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @param {number} [length] Message length if known beforehand
+                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        QueryOptions.decode = function decode(reader, length) {
+                            if (!(reader instanceof $Reader))
+                                reader = $Reader.create(reader);
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions();
+                            while (reader.pos < end) {
+                                var tag = reader.uint32();
+                                switch (tag >>> 3) {
+                                case 1: {
+                                        message.optimizerVersion = reader.string();
+                                        break;
+                                    }
+                                case 2: {
+                                        message.optimizerStatisticsPackage = reader.string();
+                                        break;
+                                    }
+                                default:
+                                    reader.skipType(tag & 7);
+                                    break;
+                                }
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Decodes a QueryOptions message from the specified reader or buffer, length delimited.
+                         * @function decodeDelimited
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        QueryOptions.decodeDelimited = function decodeDelimited(reader) {
+                            if (!(reader instanceof $Reader))
+                                reader = new $Reader(reader);
+                            return this.decode(reader, reader.uint32());
+                        };
+    
+                        /**
+                         * Verifies a QueryOptions message.
+                         * @function verify
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {Object.<string,*>} message Plain object to verify
+                         * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                         */
+                        QueryOptions.verify = function verify(message) {
+                            if (typeof message !== "object" || message === null)
+                                return "object expected";
+                            if (message.optimizerVersion != null && message.hasOwnProperty("optimizerVersion"))
+                                if (!$util.isString(message.optimizerVersion))
+                                    return "optimizerVersion: string expected";
+                            if (message.optimizerStatisticsPackage != null && message.hasOwnProperty("optimizerStatisticsPackage"))
+                                if (!$util.isString(message.optimizerStatisticsPackage))
+                                    return "optimizerStatisticsPackage: string expected";
+                            return null;
+                        };
+    
+                        /**
+                         * Creates a QueryOptions message from a plain object. Also converts values to their respective internal types.
+                         * @function fromObject
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {Object.<string,*>} object Plain object
+                         * @returns {google.spanner.v1.ExecuteSqlRequest.QueryOptions} QueryOptions
+                         */
+                        QueryOptions.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions)
+                                return object;
+                            var message = new $root.google.spanner.v1.ExecuteSqlRequest.QueryOptions();
+                            if (object.optimizerVersion != null)
+                                message.optimizerVersion = String(object.optimizerVersion);
+                            if (object.optimizerStatisticsPackage != null)
+                                message.optimizerStatisticsPackage = String(object.optimizerStatisticsPackage);
+                            return message;
+                        };
+    
+                        /**
+                         * Creates a plain object from a QueryOptions message. Also converts values to other types if specified.
+                         * @function toObject
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {google.spanner.v1.ExecuteSqlRequest.QueryOptions} message QueryOptions
+                         * @param {$protobuf.IConversionOptions} [options] Conversion options
+                         * @returns {Object.<string,*>} Plain object
+                         */
+                        QueryOptions.toObject = function toObject(message, options) {
+                            if (!options)
+                                options = {};
+                            var object = {};
+                            if (options.defaults) {
+                                object.optimizerVersion = "";
+                                object.optimizerStatisticsPackage = "";
+                            }
+                            if (message.optimizerVersion != null && message.hasOwnProperty("optimizerVersion"))
+                                object.optimizerVersion = message.optimizerVersion;
+                            if (message.optimizerStatisticsPackage != null && message.hasOwnProperty("optimizerStatisticsPackage"))
+                                object.optimizerStatisticsPackage = message.optimizerStatisticsPackage;
+                            return object;
+                        };
+    
+                        /**
+                         * Converts this QueryOptions to JSON.
+                         * @function toJSON
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @instance
+                         * @returns {Object.<string,*>} JSON object
+                         */
+                        QueryOptions.prototype.toJSON = function toJSON() {
+                            return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                        };
+    
+                        /**
+                         * Gets the default type url for QueryOptions
+                         * @function getTypeUrl
+                         * @memberof google.spanner.v1.ExecuteSqlRequest.QueryOptions
+                         * @static
+                         * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                         * @returns {string} The default type url
+                         */
+                        QueryOptions.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                            if (typeUrlPrefix === undefined) {
+                                typeUrlPrefix = "type.googleapis.com";
+                            }
+                            return typeUrlPrefix + "/google.spanner.v1.ExecuteSqlRequest.QueryOptions";
+                        };
+    
+                        return QueryOptions;
+                    })();
+    
+                    return ExecuteSqlRequest;
+                })();
+    
+                v1.ExecuteBatchDmlRequest = (function() {
+    
+                    /**
+                     * Properties of an ExecuteBatchDmlRequest.
+                     * @memberof google.spanner.v1
+                     * @interface IExecuteBatchDmlRequest
+                     * @property {string|null} [session] ExecuteBatchDmlRequest session
+                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ExecuteBatchDmlRequest transaction
+                     * @property {Array.<google.spanner.v1.ExecuteBatchDmlRequest.IStatement>|null} [statements] ExecuteBatchDmlRequest statements
+                     * @property {number|Long|null} [seqno] ExecuteBatchDmlRequest seqno
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ExecuteBatchDmlRequest requestOptions
+                     */
+    
+                    /**
+                     * Constructs a new ExecuteBatchDmlRequest.
+                     * @memberof google.spanner.v1
+                     * @classdesc Represents an ExecuteBatchDmlRequest.
+                     * @implements IExecuteBatchDmlRequest
+                     * @constructor
+                     * @param {google.spanner.v1.IExecuteBatchDmlRequest=} [properties] Properties to set
+                     */
+                    function ExecuteBatchDmlRequest(properties) {
+                        this.statements = [];
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * ExecuteBatchDmlRequest session.
+                     * @member {string} session
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     */
+                    ExecuteBatchDmlRequest.prototype.session = "";
+    
+                    /**
+                     * ExecuteBatchDmlRequest transaction.
+                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     */
+                    ExecuteBatchDmlRequest.prototype.transaction = null;
+    
+                    /**
+                     * ExecuteBatchDmlRequest statements.
+                     * @member {Array.<google.spanner.v1.ExecuteBatchDmlRequest.IStatement>} statements
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     */
+                    ExecuteBatchDmlRequest.prototype.statements = $util.emptyArray;
+    
+                    /**
+                     * ExecuteBatchDmlRequest seqno.
+                     * @member {number|Long} seqno
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     */
+                    ExecuteBatchDmlRequest.prototype.seqno = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+    
+                    /**
+                     * ExecuteBatchDmlRequest requestOptions.
+                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     */
+                    ExecuteBatchDmlRequest.prototype.requestOptions = null;
+    
+                    /**
+                     * Creates a new ExecuteBatchDmlRequest instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest instance
+                     */
+                    ExecuteBatchDmlRequest.create = function create(properties) {
+                        return new ExecuteBatchDmlRequest(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteBatchDmlRequest message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlRequest} message ExecuteBatchDmlRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteBatchDmlRequest.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
+                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.statements != null && message.statements.length)
+                            for (var i = 0; i < message.statements.length; ++i)
+                                $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.encode(message.statements[i], writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
+                        if (message.seqno != null && Object.hasOwnProperty.call(message, "seqno"))
+                            writer.uint32(/* id 4, wireType 0 =*/32).int64(message.seqno);
+                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 5, wireType 2 =*/42).fork()).ldelim();
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteBatchDmlRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlRequest} message ExecuteBatchDmlRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteBatchDmlRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes an ExecuteBatchDmlRequest message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    ExecuteBatchDmlRequest.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlRequest();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.session = reader.string();
+                                    break;
+                                }
+                            case 2: {
+                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    if (!(message.statements && message.statements.length))
+                                        message.statements = [];
+                                    message.statements.push($root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.decode(reader, reader.uint32()));
+                                    break;
+                                }
+                            case 4: {
+                                    message.seqno = reader.int64();
+                                    break;
+                                }
+                            case 5: {
+                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes an ExecuteBatchDmlRequest message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    ExecuteBatchDmlRequest.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies an ExecuteBatchDmlRequest message.
+                     * @function verify
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    ExecuteBatchDmlRequest.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            if (!$util.isString(message.session))
+                                return "session: string expected";
+                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
+                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
+                            if (error)
+                                return "transaction." + error;
+                        }
+                        if (message.statements != null && message.hasOwnProperty("statements")) {
+                            if (!Array.isArray(message.statements))
+                                return "statements: array expected";
+                            for (var i = 0; i < message.statements.length; ++i) {
+                                var error = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify(message.statements[i]);
+                                if (error)
+                                    return "statements." + error;
+                            }
+                        }
+                        if (message.seqno != null && message.hasOwnProperty("seqno"))
+                            if (!$util.isInteger(message.seqno) && !(message.seqno && $util.isInteger(message.seqno.low) && $util.isInteger(message.seqno.high)))
+                                return "seqno: integer|Long expected";
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
+                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
+                            if (error)
+                                return "requestOptions." + error;
+                        }
+                        return null;
+                    };
+    
+                    /**
+                     * Creates an ExecuteBatchDmlRequest message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.spanner.v1.ExecuteBatchDmlRequest} ExecuteBatchDmlRequest
+                     */
+                    ExecuteBatchDmlRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlRequest)
+                            return object;
+                        var message = new $root.google.spanner.v1.ExecuteBatchDmlRequest();
+                        if (object.session != null)
+                            message.session = String(object.session);
+                        if (object.transaction != null) {
+                            if (typeof object.transaction !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.transaction: object expected");
+                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
+                        }
+                        if (object.statements) {
+                            if (!Array.isArray(object.statements))
+                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.statements: array expected");
+                            message.statements = [];
+                            for (var i = 0; i < object.statements.length; ++i) {
+                                if (typeof object.statements[i] !== "object")
+                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.statements: object expected");
+                                message.statements[i] = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.fromObject(object.statements[i]);
+                            }
+                        }
+                        if (object.seqno != null)
+                            if ($util.Long)
+                                (message.seqno = $util.Long.fromValue(object.seqno)).unsigned = false;
+                            else if (typeof object.seqno === "string")
+                                message.seqno = parseInt(object.seqno, 10);
+                            else if (typeof object.seqno === "number")
+                                message.seqno = object.seqno;
+                            else if (typeof object.seqno === "object")
+                                message.seqno = new $util.LongBits(object.seqno.low >>> 0, object.seqno.high >>> 0).toNumber();
+                        if (object.requestOptions != null) {
+                            if (typeof object.requestOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.requestOptions: object expected");
+                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from an ExecuteBatchDmlRequest message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {google.spanner.v1.ExecuteBatchDmlRequest} message ExecuteBatchDmlRequest
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    ExecuteBatchDmlRequest.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.arrays || options.defaults)
+                            object.statements = [];
+                        if (options.defaults) {
+                            object.session = "";
+                            object.transaction = null;
+                            if ($util.Long) {
+                                var long = new $util.Long(0, 0, false);
+                                object.seqno = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
+                            } else
+                                object.seqno = options.longs === String ? "0" : 0;
+                            object.requestOptions = null;
+                        }
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
+                        if (message.statements && message.statements.length) {
+                            object.statements = [];
+                            for (var j = 0; j < message.statements.length; ++j)
+                                object.statements[j] = $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement.toObject(message.statements[j], options);
+                        }
+                        if (message.seqno != null && message.hasOwnProperty("seqno"))
+                            if (typeof message.seqno === "number")
+                                object.seqno = options.longs === String ? String(message.seqno) : message.seqno;
+                            else
+                                object.seqno = options.longs === String ? $util.Long.prototype.toString.call(message.seqno) : options.longs === Number ? new $util.LongBits(message.seqno.low >>> 0, message.seqno.high >>> 0).toNumber() : message.seqno;
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
+                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this ExecuteBatchDmlRequest to JSON.
+                     * @function toJSON
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    ExecuteBatchDmlRequest.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for ExecuteBatchDmlRequest
+                     * @function getTypeUrl
+                     * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    ExecuteBatchDmlRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlRequest";
+                    };
+    
+                    ExecuteBatchDmlRequest.Statement = (function() {
+    
+                        /**
+                         * Properties of a Statement.
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                         * @interface IStatement
+                         * @property {string|null} [sql] Statement sql
+                         * @property {google.protobuf.IStruct|null} [params] Statement params
+                         * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] Statement paramTypes
+                         */
+    
+                        /**
+                         * Constructs a new Statement.
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest
+                         * @classdesc Represents a Statement.
+                         * @implements IStatement
+                         * @constructor
+                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement=} [properties] Properties to set
+                         */
+                        function Statement(properties) {
+                            this.paramTypes = {};
+                            if (properties)
+                                for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                    if (properties[keys[i]] != null)
+                                        this[keys[i]] = properties[keys[i]];
+                        }
+    
+                        /**
+                         * Statement sql.
+                         * @member {string} sql
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @instance
+                         */
+                        Statement.prototype.sql = "";
+    
+                        /**
+                         * Statement params.
+                         * @member {google.protobuf.IStruct|null|undefined} params
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @instance
+                         */
+                        Statement.prototype.params = null;
+    
+                        /**
+                         * Statement paramTypes.
+                         * @member {Object.<string,google.spanner.v1.IType>} paramTypes
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @instance
+                         */
+                        Statement.prototype.paramTypes = $util.emptyObject;
+    
+                        /**
+                         * Creates a new Statement instance using the specified properties.
+                         * @function create
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement=} [properties] Properties to set
+                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement instance
+                         */
+                        Statement.create = function create(properties) {
+                            return new Statement(properties);
+                        };
+    
+                        /**
+                         * Encodes the specified Statement message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify|verify} messages.
+                         * @function encode
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement} message Statement message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        Statement.encode = function encode(message, writer) {
+                            if (!writer)
+                                writer = $Writer.create();
+                            if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
+                                writer.uint32(/* id 1, wireType 2 =*/10).string(message.sql);
+                            if (message.params != null && Object.hasOwnProperty.call(message, "params"))
+                                $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                            if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
+                                for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
+                                    writer.uint32(/* id 3, wireType 2 =*/26).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
+                                    $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
+                                }
+                            return writer;
+                        };
+    
+                        /**
+                         * Encodes the specified Statement message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlRequest.Statement.verify|verify} messages.
+                         * @function encodeDelimited
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.IStatement} message Statement message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        Statement.encodeDelimited = function encodeDelimited(message, writer) {
+                            return this.encode(message, writer).ldelim();
+                        };
+    
+                        /**
+                         * Decodes a Statement message from the specified reader or buffer.
+                         * @function decode
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @param {number} [length] Message length if known beforehand
+                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        Statement.decode = function decode(reader, length) {
+                            if (!(reader instanceof $Reader))
+                                reader = $Reader.create(reader);
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement(), key, value;
+                            while (reader.pos < end) {
+                                var tag = reader.uint32();
+                                switch (tag >>> 3) {
+                                case 1: {
+                                        message.sql = reader.string();
+                                        break;
+                                    }
+                                case 2: {
+                                        message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
+                                        break;
+                                    }
+                                case 3: {
+                                        if (message.paramTypes === $util.emptyObject)
+                                            message.paramTypes = {};
+                                        var end2 = reader.uint32() + reader.pos;
+                                        key = "";
+                                        value = null;
+                                        while (reader.pos < end2) {
+                                            var tag2 = reader.uint32();
+                                            switch (tag2 >>> 3) {
+                                            case 1:
+                                                key = reader.string();
+                                                break;
+                                            case 2:
+                                                value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
+                                                break;
+                                            default:
+                                                reader.skipType(tag2 & 7);
+                                                break;
+                                            }
+                                        }
+                                        message.paramTypes[key] = value;
+                                        break;
+                                    }
+                                default:
+                                    reader.skipType(tag & 7);
+                                    break;
+                                }
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Decodes a Statement message from the specified reader or buffer, length delimited.
+                         * @function decodeDelimited
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        Statement.decodeDelimited = function decodeDelimited(reader) {
+                            if (!(reader instanceof $Reader))
+                                reader = new $Reader(reader);
+                            return this.decode(reader, reader.uint32());
+                        };
+    
+                        /**
+                         * Verifies a Statement message.
+                         * @function verify
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {Object.<string,*>} message Plain object to verify
+                         * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                         */
+                        Statement.verify = function verify(message) {
+                            if (typeof message !== "object" || message === null)
+                                return "object expected";
+                            if (message.sql != null && message.hasOwnProperty("sql"))
+                                if (!$util.isString(message.sql))
+                                    return "sql: string expected";
+                            if (message.params != null && message.hasOwnProperty("params")) {
+                                var error = $root.google.protobuf.Struct.verify(message.params);
+                                if (error)
+                                    return "params." + error;
+                            }
+                            if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
+                                if (!$util.isObject(message.paramTypes))
+                                    return "paramTypes: object expected";
+                                var key = Object.keys(message.paramTypes);
+                                for (var i = 0; i < key.length; ++i) {
+                                    var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
+                                    if (error)
+                                        return "paramTypes." + error;
+                                }
+                            }
+                            return null;
+                        };
+    
+                        /**
+                         * Creates a Statement message from a plain object. Also converts values to their respective internal types.
+                         * @function fromObject
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {Object.<string,*>} object Plain object
+                         * @returns {google.spanner.v1.ExecuteBatchDmlRequest.Statement} Statement
+                         */
+                        Statement.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement)
+                                return object;
+                            var message = new $root.google.spanner.v1.ExecuteBatchDmlRequest.Statement();
+                            if (object.sql != null)
+                                message.sql = String(object.sql);
+                            if (object.params != null) {
+                                if (typeof object.params !== "object")
+                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.params: object expected");
+                                message.params = $root.google.protobuf.Struct.fromObject(object.params);
+                            }
+                            if (object.paramTypes) {
+                                if (typeof object.paramTypes !== "object")
+                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.paramTypes: object expected");
+                                message.paramTypes = {};
+                                for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
+                                    if (typeof object.paramTypes[keys[i]] !== "object")
+                                        throw TypeError(".google.spanner.v1.ExecuteBatchDmlRequest.Statement.paramTypes: object expected");
+                                    message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
+                                }
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Creates a plain object from a Statement message. Also converts values to other types if specified.
+                         * @function toObject
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {google.spanner.v1.ExecuteBatchDmlRequest.Statement} message Statement
+                         * @param {$protobuf.IConversionOptions} [options] Conversion options
+                         * @returns {Object.<string,*>} Plain object
+                         */
+                        Statement.toObject = function toObject(message, options) {
+                            if (!options)
+                                options = {};
+                            var object = {};
+                            if (options.objects || options.defaults)
+                                object.paramTypes = {};
+                            if (options.defaults) {
+                                object.sql = "";
+                                object.params = null;
+                            }
+                            if (message.sql != null && message.hasOwnProperty("sql"))
+                                object.sql = message.sql;
+                            if (message.params != null && message.hasOwnProperty("params"))
+                                object.params = $root.google.protobuf.Struct.toObject(message.params, options);
+                            var keys2;
+                            if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
+                                object.paramTypes = {};
+                                for (var j = 0; j < keys2.length; ++j)
+                                    object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                            }
+                            return object;
+                        };
+    
+                        /**
+                         * Converts this Statement to JSON.
+                         * @function toJSON
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @instance
+                         * @returns {Object.<string,*>} JSON object
+                         */
+                        Statement.prototype.toJSON = function toJSON() {
+                            return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                        };
+    
+                        /**
+                         * Gets the default type url for Statement
+                         * @function getTypeUrl
+                         * @memberof google.spanner.v1.ExecuteBatchDmlRequest.Statement
+                         * @static
+                         * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                         * @returns {string} The default type url
+                         */
+                        Statement.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                            if (typeUrlPrefix === undefined) {
+                                typeUrlPrefix = "type.googleapis.com";
+                            }
+                            return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlRequest.Statement";
+                        };
+    
+                        return Statement;
+                    })();
+    
+                    return ExecuteBatchDmlRequest;
+                })();
+    
+                v1.ExecuteBatchDmlResponse = (function() {
+    
+                    /**
+                     * Properties of an ExecuteBatchDmlResponse.
+                     * @memberof google.spanner.v1
+                     * @interface IExecuteBatchDmlResponse
+                     * @property {Array.<google.spanner.v1.IResultSet>|null} [resultSets] ExecuteBatchDmlResponse resultSets
+                     * @property {google.rpc.IStatus|null} [status] ExecuteBatchDmlResponse status
+                     */
+    
+                    /**
+                     * Constructs a new ExecuteBatchDmlResponse.
+                     * @memberof google.spanner.v1
+                     * @classdesc Represents an ExecuteBatchDmlResponse.
+                     * @implements IExecuteBatchDmlResponse
+                     * @constructor
+                     * @param {google.spanner.v1.IExecuteBatchDmlResponse=} [properties] Properties to set
+                     */
+                    function ExecuteBatchDmlResponse(properties) {
+                        this.resultSets = [];
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * ExecuteBatchDmlResponse resultSets.
+                     * @member {Array.<google.spanner.v1.IResultSet>} resultSets
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @instance
+                     */
+                    ExecuteBatchDmlResponse.prototype.resultSets = $util.emptyArray;
+    
+                    /**
+                     * ExecuteBatchDmlResponse status.
+                     * @member {google.rpc.IStatus|null|undefined} status
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @instance
+                     */
+                    ExecuteBatchDmlResponse.prototype.status = null;
+    
+                    /**
+                     * Creates a new ExecuteBatchDmlResponse instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlResponse=} [properties] Properties to set
+                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse instance
+                     */
+                    ExecuteBatchDmlResponse.create = function create(properties) {
+                        return new ExecuteBatchDmlResponse(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteBatchDmlResponse message. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlResponse.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlResponse} message ExecuteBatchDmlResponse message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteBatchDmlResponse.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.resultSets != null && message.resultSets.length)
+                            for (var i = 0; i < message.resultSets.length; ++i)
+                                $root.google.spanner.v1.ResultSet.encode(message.resultSets[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                        if (message.status != null && Object.hasOwnProperty.call(message, "status"))
+                            $root.google.rpc.Status.encode(message.status, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified ExecuteBatchDmlResponse message, length delimited. Does not implicitly {@link google.spanner.v1.ExecuteBatchDmlResponse.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {google.spanner.v1.IExecuteBatchDmlResponse} message ExecuteBatchDmlResponse message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    ExecuteBatchDmlResponse.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes an ExecuteBatchDmlResponse message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    ExecuteBatchDmlResponse.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ExecuteBatchDmlResponse();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    if (!(message.resultSets && message.resultSets.length))
+                                        message.resultSets = [];
+                                    message.resultSets.push($root.google.spanner.v1.ResultSet.decode(reader, reader.uint32()));
+                                    break;
+                                }
+                            case 2: {
+                                    message.status = $root.google.rpc.Status.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes an ExecuteBatchDmlResponse message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
                     ExecuteBatchDmlResponse.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
@@ -45643,138 +49090,1143 @@
                     };
     
                     /**
-                     * Verifies an ExecuteBatchDmlResponse message.
+                     * Verifies an ExecuteBatchDmlResponse message.
+                     * @function verify
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    ExecuteBatchDmlResponse.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.resultSets != null && message.hasOwnProperty("resultSets")) {
+                            if (!Array.isArray(message.resultSets))
+                                return "resultSets: array expected";
+                            for (var i = 0; i < message.resultSets.length; ++i) {
+                                var error = $root.google.spanner.v1.ResultSet.verify(message.resultSets[i]);
+                                if (error)
+                                    return "resultSets." + error;
+                            }
+                        }
+                        if (message.status != null && message.hasOwnProperty("status")) {
+                            var error = $root.google.rpc.Status.verify(message.status);
+                            if (error)
+                                return "status." + error;
+                        }
+                        return null;
+                    };
+    
+                    /**
+                     * Creates an ExecuteBatchDmlResponse message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
+                     */
+                    ExecuteBatchDmlResponse.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlResponse)
+                            return object;
+                        var message = new $root.google.spanner.v1.ExecuteBatchDmlResponse();
+                        if (object.resultSets) {
+                            if (!Array.isArray(object.resultSets))
+                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.resultSets: array expected");
+                            message.resultSets = [];
+                            for (var i = 0; i < object.resultSets.length; ++i) {
+                                if (typeof object.resultSets[i] !== "object")
+                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.resultSets: object expected");
+                                message.resultSets[i] = $root.google.spanner.v1.ResultSet.fromObject(object.resultSets[i]);
+                            }
+                        }
+                        if (object.status != null) {
+                            if (typeof object.status !== "object")
+                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.status: object expected");
+                            message.status = $root.google.rpc.Status.fromObject(object.status);
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from an ExecuteBatchDmlResponse message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {google.spanner.v1.ExecuteBatchDmlResponse} message ExecuteBatchDmlResponse
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    ExecuteBatchDmlResponse.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.arrays || options.defaults)
+                            object.resultSets = [];
+                        if (options.defaults)
+                            object.status = null;
+                        if (message.resultSets && message.resultSets.length) {
+                            object.resultSets = [];
+                            for (var j = 0; j < message.resultSets.length; ++j)
+                                object.resultSets[j] = $root.google.spanner.v1.ResultSet.toObject(message.resultSets[j], options);
+                        }
+                        if (message.status != null && message.hasOwnProperty("status"))
+                            object.status = $root.google.rpc.Status.toObject(message.status, options);
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this ExecuteBatchDmlResponse to JSON.
+                     * @function toJSON
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    ExecuteBatchDmlResponse.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for ExecuteBatchDmlResponse
+                     * @function getTypeUrl
+                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    ExecuteBatchDmlResponse.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlResponse";
+                    };
+    
+                    return ExecuteBatchDmlResponse;
+                })();
+    
+                v1.PartitionOptions = (function() {
+    
+                    /**
+                     * Properties of a PartitionOptions.
+                     * @memberof google.spanner.v1
+                     * @interface IPartitionOptions
+                     * @property {number|Long|null} [partitionSizeBytes] PartitionOptions partitionSizeBytes
+                     * @property {number|Long|null} [maxPartitions] PartitionOptions maxPartitions
+                     */
+    
+                    /**
+                     * Constructs a new PartitionOptions.
+                     * @memberof google.spanner.v1
+                     * @classdesc Represents a PartitionOptions.
+                     * @implements IPartitionOptions
+                     * @constructor
+                     * @param {google.spanner.v1.IPartitionOptions=} [properties] Properties to set
+                     */
+                    function PartitionOptions(properties) {
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * PartitionOptions partitionSizeBytes.
+                     * @member {number|Long} partitionSizeBytes
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @instance
+                     */
+                    PartitionOptions.prototype.partitionSizeBytes = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+    
+                    /**
+                     * PartitionOptions maxPartitions.
+                     * @member {number|Long} maxPartitions
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @instance
+                     */
+                    PartitionOptions.prototype.maxPartitions = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+    
+                    /**
+                     * Creates a new PartitionOptions instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {google.spanner.v1.IPartitionOptions=} [properties] Properties to set
+                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions instance
+                     */
+                    PartitionOptions.create = function create(properties) {
+                        return new PartitionOptions(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionOptions message. Does not implicitly {@link google.spanner.v1.PartitionOptions.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {google.spanner.v1.IPartitionOptions} message PartitionOptions message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionOptions.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.partitionSizeBytes != null && Object.hasOwnProperty.call(message, "partitionSizeBytes"))
+                            writer.uint32(/* id 1, wireType 0 =*/8).int64(message.partitionSizeBytes);
+                        if (message.maxPartitions != null && Object.hasOwnProperty.call(message, "maxPartitions"))
+                            writer.uint32(/* id 2, wireType 0 =*/16).int64(message.maxPartitions);
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionOptions message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionOptions.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {google.spanner.v1.IPartitionOptions} message PartitionOptions message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionOptions.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes a PartitionOptions message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionOptions.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionOptions();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.partitionSizeBytes = reader.int64();
+                                    break;
+                                }
+                            case 2: {
+                                    message.maxPartitions = reader.int64();
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes a PartitionOptions message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionOptions.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies a PartitionOptions message.
+                     * @function verify
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    PartitionOptions.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.partitionSizeBytes != null && message.hasOwnProperty("partitionSizeBytes"))
+                            if (!$util.isInteger(message.partitionSizeBytes) && !(message.partitionSizeBytes && $util.isInteger(message.partitionSizeBytes.low) && $util.isInteger(message.partitionSizeBytes.high)))
+                                return "partitionSizeBytes: integer|Long expected";
+                        if (message.maxPartitions != null && message.hasOwnProperty("maxPartitions"))
+                            if (!$util.isInteger(message.maxPartitions) && !(message.maxPartitions && $util.isInteger(message.maxPartitions.low) && $util.isInteger(message.maxPartitions.high)))
+                                return "maxPartitions: integer|Long expected";
+                        return null;
+                    };
+    
+                    /**
+                     * Creates a PartitionOptions message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     */
+                    PartitionOptions.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.PartitionOptions)
+                            return object;
+                        var message = new $root.google.spanner.v1.PartitionOptions();
+                        if (object.partitionSizeBytes != null)
+                            if ($util.Long)
+                                (message.partitionSizeBytes = $util.Long.fromValue(object.partitionSizeBytes)).unsigned = false;
+                            else if (typeof object.partitionSizeBytes === "string")
+                                message.partitionSizeBytes = parseInt(object.partitionSizeBytes, 10);
+                            else if (typeof object.partitionSizeBytes === "number")
+                                message.partitionSizeBytes = object.partitionSizeBytes;
+                            else if (typeof object.partitionSizeBytes === "object")
+                                message.partitionSizeBytes = new $util.LongBits(object.partitionSizeBytes.low >>> 0, object.partitionSizeBytes.high >>> 0).toNumber();
+                        if (object.maxPartitions != null)
+                            if ($util.Long)
+                                (message.maxPartitions = $util.Long.fromValue(object.maxPartitions)).unsigned = false;
+                            else if (typeof object.maxPartitions === "string")
+                                message.maxPartitions = parseInt(object.maxPartitions, 10);
+                            else if (typeof object.maxPartitions === "number")
+                                message.maxPartitions = object.maxPartitions;
+                            else if (typeof object.maxPartitions === "object")
+                                message.maxPartitions = new $util.LongBits(object.maxPartitions.low >>> 0, object.maxPartitions.high >>> 0).toNumber();
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from a PartitionOptions message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {google.spanner.v1.PartitionOptions} message PartitionOptions
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    PartitionOptions.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.defaults) {
+                            if ($util.Long) {
+                                var long = new $util.Long(0, 0, false);
+                                object.partitionSizeBytes = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
+                            } else
+                                object.partitionSizeBytes = options.longs === String ? "0" : 0;
+                            if ($util.Long) {
+                                var long = new $util.Long(0, 0, false);
+                                object.maxPartitions = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
+                            } else
+                                object.maxPartitions = options.longs === String ? "0" : 0;
+                        }
+                        if (message.partitionSizeBytes != null && message.hasOwnProperty("partitionSizeBytes"))
+                            if (typeof message.partitionSizeBytes === "number")
+                                object.partitionSizeBytes = options.longs === String ? String(message.partitionSizeBytes) : message.partitionSizeBytes;
+                            else
+                                object.partitionSizeBytes = options.longs === String ? $util.Long.prototype.toString.call(message.partitionSizeBytes) : options.longs === Number ? new $util.LongBits(message.partitionSizeBytes.low >>> 0, message.partitionSizeBytes.high >>> 0).toNumber() : message.partitionSizeBytes;
+                        if (message.maxPartitions != null && message.hasOwnProperty("maxPartitions"))
+                            if (typeof message.maxPartitions === "number")
+                                object.maxPartitions = options.longs === String ? String(message.maxPartitions) : message.maxPartitions;
+                            else
+                                object.maxPartitions = options.longs === String ? $util.Long.prototype.toString.call(message.maxPartitions) : options.longs === Number ? new $util.LongBits(message.maxPartitions.low >>> 0, message.maxPartitions.high >>> 0).toNumber() : message.maxPartitions;
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this PartitionOptions to JSON.
+                     * @function toJSON
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    PartitionOptions.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for PartitionOptions
+                     * @function getTypeUrl
+                     * @memberof google.spanner.v1.PartitionOptions
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    PartitionOptions.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.spanner.v1.PartitionOptions";
+                    };
+    
+                    return PartitionOptions;
+                })();
+    
+                v1.PartitionQueryRequest = (function() {
+    
+                    /**
+                     * Properties of a PartitionQueryRequest.
+                     * @memberof google.spanner.v1
+                     * @interface IPartitionQueryRequest
+                     * @property {string|null} [session] PartitionQueryRequest session
+                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] PartitionQueryRequest transaction
+                     * @property {string|null} [sql] PartitionQueryRequest sql
+                     * @property {google.protobuf.IStruct|null} [params] PartitionQueryRequest params
+                     * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] PartitionQueryRequest paramTypes
+                     * @property {google.spanner.v1.IPartitionOptions|null} [partitionOptions] PartitionQueryRequest partitionOptions
+                     */
+    
+                    /**
+                     * Constructs a new PartitionQueryRequest.
+                     * @memberof google.spanner.v1
+                     * @classdesc Represents a PartitionQueryRequest.
+                     * @implements IPartitionQueryRequest
+                     * @constructor
+                     * @param {google.spanner.v1.IPartitionQueryRequest=} [properties] Properties to set
+                     */
+                    function PartitionQueryRequest(properties) {
+                        this.paramTypes = {};
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * PartitionQueryRequest session.
+                     * @member {string} session
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.session = "";
+    
+                    /**
+                     * PartitionQueryRequest transaction.
+                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.transaction = null;
+    
+                    /**
+                     * PartitionQueryRequest sql.
+                     * @member {string} sql
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.sql = "";
+    
+                    /**
+                     * PartitionQueryRequest params.
+                     * @member {google.protobuf.IStruct|null|undefined} params
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.params = null;
+    
+                    /**
+                     * PartitionQueryRequest paramTypes.
+                     * @member {Object.<string,google.spanner.v1.IType>} paramTypes
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.paramTypes = $util.emptyObject;
+    
+                    /**
+                     * PartitionQueryRequest partitionOptions.
+                     * @member {google.spanner.v1.IPartitionOptions|null|undefined} partitionOptions
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     */
+                    PartitionQueryRequest.prototype.partitionOptions = null;
+    
+                    /**
+                     * Creates a new PartitionQueryRequest instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionQueryRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest instance
+                     */
+                    PartitionQueryRequest.create = function create(properties) {
+                        return new PartitionQueryRequest(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionQueryRequest message. Does not implicitly {@link google.spanner.v1.PartitionQueryRequest.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionQueryRequest} message PartitionQueryRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionQueryRequest.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
+                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
+                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.sql);
+                        if (message.params != null && Object.hasOwnProperty.call(message, "params"))
+                            $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
+                        if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
+                            for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
+                                writer.uint32(/* id 5, wireType 2 =*/42).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
+                                $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
+                            }
+                        if (message.partitionOptions != null && Object.hasOwnProperty.call(message, "partitionOptions"))
+                            $root.google.spanner.v1.PartitionOptions.encode(message.partitionOptions, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionQueryRequest message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionQueryRequest.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionQueryRequest} message PartitionQueryRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionQueryRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes a PartitionQueryRequest message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionQueryRequest.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionQueryRequest(), key, value;
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.session = reader.string();
+                                    break;
+                                }
+                            case 2: {
+                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    message.sql = reader.string();
+                                    break;
+                                }
+                            case 4: {
+                                    message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 5: {
+                                    if (message.paramTypes === $util.emptyObject)
+                                        message.paramTypes = {};
+                                    var end2 = reader.uint32() + reader.pos;
+                                    key = "";
+                                    value = null;
+                                    while (reader.pos < end2) {
+                                        var tag2 = reader.uint32();
+                                        switch (tag2 >>> 3) {
+                                        case 1:
+                                            key = reader.string();
+                                            break;
+                                        case 2:
+                                            value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
+                                            break;
+                                        default:
+                                            reader.skipType(tag2 & 7);
+                                            break;
+                                        }
+                                    }
+                                    message.paramTypes[key] = value;
+                                    break;
+                                }
+                            case 6: {
+                                    message.partitionOptions = $root.google.spanner.v1.PartitionOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes a PartitionQueryRequest message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionQueryRequest.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies a PartitionQueryRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @memberof google.spanner.v1.PartitionQueryRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    ExecuteBatchDmlResponse.verify = function verify(message) {
+                    PartitionQueryRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.resultSets != null && message.hasOwnProperty("resultSets")) {
-                            if (!Array.isArray(message.resultSets))
-                                return "resultSets: array expected";
-                            for (var i = 0; i < message.resultSets.length; ++i) {
-                                var error = $root.google.spanner.v1.ResultSet.verify(message.resultSets[i]);
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            if (!$util.isString(message.session))
+                                return "session: string expected";
+                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
+                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
+                            if (error)
+                                return "transaction." + error;
+                        }
+                        if (message.sql != null && message.hasOwnProperty("sql"))
+                            if (!$util.isString(message.sql))
+                                return "sql: string expected";
+                        if (message.params != null && message.hasOwnProperty("params")) {
+                            var error = $root.google.protobuf.Struct.verify(message.params);
+                            if (error)
+                                return "params." + error;
+                        }
+                        if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
+                            if (!$util.isObject(message.paramTypes))
+                                return "paramTypes: object expected";
+                            var key = Object.keys(message.paramTypes);
+                            for (var i = 0; i < key.length; ++i) {
+                                var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
                                 if (error)
-                                    return "resultSets." + error;
+                                    return "paramTypes." + error;
                             }
                         }
-                        if (message.status != null && message.hasOwnProperty("status")) {
-                            var error = $root.google.rpc.Status.verify(message.status);
+                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions")) {
+                            var error = $root.google.spanner.v1.PartitionOptions.verify(message.partitionOptions);
                             if (error)
-                                return "status." + error;
+                                return "partitionOptions." + error;
                         }
                         return null;
                     };
     
                     /**
-                     * Creates an ExecuteBatchDmlResponse message from a plain object. Also converts values to their respective internal types.
+                     * Creates a PartitionQueryRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @memberof google.spanner.v1.PartitionQueryRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.ExecuteBatchDmlResponse} ExecuteBatchDmlResponse
+                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
                      */
-                    ExecuteBatchDmlResponse.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.ExecuteBatchDmlResponse)
+                    PartitionQueryRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.PartitionQueryRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.ExecuteBatchDmlResponse();
-                        if (object.resultSets) {
-                            if (!Array.isArray(object.resultSets))
-                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.resultSets: array expected");
-                            message.resultSets = [];
-                            for (var i = 0; i < object.resultSets.length; ++i) {
-                                if (typeof object.resultSets[i] !== "object")
-                                    throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.resultSets: object expected");
-                                message.resultSets[i] = $root.google.spanner.v1.ResultSet.fromObject(object.resultSets[i]);
+                        var message = new $root.google.spanner.v1.PartitionQueryRequest();
+                        if (object.session != null)
+                            message.session = String(object.session);
+                        if (object.transaction != null) {
+                            if (typeof object.transaction !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.transaction: object expected");
+                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
+                        }
+                        if (object.sql != null)
+                            message.sql = String(object.sql);
+                        if (object.params != null) {
+                            if (typeof object.params !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.params: object expected");
+                            message.params = $root.google.protobuf.Struct.fromObject(object.params);
+                        }
+                        if (object.paramTypes) {
+                            if (typeof object.paramTypes !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.paramTypes: object expected");
+                            message.paramTypes = {};
+                            for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
+                                if (typeof object.paramTypes[keys[i]] !== "object")
+                                    throw TypeError(".google.spanner.v1.PartitionQueryRequest.paramTypes: object expected");
+                                message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
                             }
                         }
-                        if (object.status != null) {
-                            if (typeof object.status !== "object")
-                                throw TypeError(".google.spanner.v1.ExecuteBatchDmlResponse.status: object expected");
-                            message.status = $root.google.rpc.Status.fromObject(object.status);
+                        if (object.partitionOptions != null) {
+                            if (typeof object.partitionOptions !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.partitionOptions: object expected");
+                            message.partitionOptions = $root.google.spanner.v1.PartitionOptions.fromObject(object.partitionOptions);
                         }
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from an ExecuteBatchDmlResponse message. Also converts values to other types if specified.
+                     * Creates a plain object from a PartitionQueryRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @memberof google.spanner.v1.PartitionQueryRequest
                      * @static
-                     * @param {google.spanner.v1.ExecuteBatchDmlResponse} message ExecuteBatchDmlResponse
+                     * @param {google.spanner.v1.PartitionQueryRequest} message PartitionQueryRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    ExecuteBatchDmlResponse.toObject = function toObject(message, options) {
+                    PartitionQueryRequest.toObject = function toObject(message, options) {
+                        if (!options)
+                            options = {};
+                        var object = {};
+                        if (options.objects || options.defaults)
+                            object.paramTypes = {};
+                        if (options.defaults) {
+                            object.session = "";
+                            object.transaction = null;
+                            object.sql = "";
+                            object.params = null;
+                            object.partitionOptions = null;
+                        }
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
+                        if (message.sql != null && message.hasOwnProperty("sql"))
+                            object.sql = message.sql;
+                        if (message.params != null && message.hasOwnProperty("params"))
+                            object.params = $root.google.protobuf.Struct.toObject(message.params, options);
+                        var keys2;
+                        if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
+                            object.paramTypes = {};
+                            for (var j = 0; j < keys2.length; ++j)
+                                object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                        }
+                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions"))
+                            object.partitionOptions = $root.google.spanner.v1.PartitionOptions.toObject(message.partitionOptions, options);
+                        return object;
+                    };
+    
+                    /**
+                     * Converts this PartitionQueryRequest to JSON.
+                     * @function toJSON
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @instance
+                     * @returns {Object.<string,*>} JSON object
+                     */
+                    PartitionQueryRequest.prototype.toJSON = function toJSON() {
+                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                    };
+    
+                    /**
+                     * Gets the default type url for PartitionQueryRequest
+                     * @function getTypeUrl
+                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @static
+                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                     * @returns {string} The default type url
+                     */
+                    PartitionQueryRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                        if (typeUrlPrefix === undefined) {
+                            typeUrlPrefix = "type.googleapis.com";
+                        }
+                        return typeUrlPrefix + "/google.spanner.v1.PartitionQueryRequest";
+                    };
+    
+                    return PartitionQueryRequest;
+                })();
+    
+                v1.PartitionReadRequest = (function() {
+    
+                    /**
+                     * Properties of a PartitionReadRequest.
+                     * @memberof google.spanner.v1
+                     * @interface IPartitionReadRequest
+                     * @property {string|null} [session] PartitionReadRequest session
+                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] PartitionReadRequest transaction
+                     * @property {string|null} [table] PartitionReadRequest table
+                     * @property {string|null} [index] PartitionReadRequest index
+                     * @property {Array.<string>|null} [columns] PartitionReadRequest columns
+                     * @property {google.spanner.v1.IKeySet|null} [keySet] PartitionReadRequest keySet
+                     * @property {google.spanner.v1.IPartitionOptions|null} [partitionOptions] PartitionReadRequest partitionOptions
+                     */
+    
+                    /**
+                     * Constructs a new PartitionReadRequest.
+                     * @memberof google.spanner.v1
+                     * @classdesc Represents a PartitionReadRequest.
+                     * @implements IPartitionReadRequest
+                     * @constructor
+                     * @param {google.spanner.v1.IPartitionReadRequest=} [properties] Properties to set
+                     */
+                    function PartitionReadRequest(properties) {
+                        this.columns = [];
+                        if (properties)
+                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                if (properties[keys[i]] != null)
+                                    this[keys[i]] = properties[keys[i]];
+                    }
+    
+                    /**
+                     * PartitionReadRequest session.
+                     * @member {string} session
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.session = "";
+    
+                    /**
+                     * PartitionReadRequest transaction.
+                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.transaction = null;
+    
+                    /**
+                     * PartitionReadRequest table.
+                     * @member {string} table
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.table = "";
+    
+                    /**
+                     * PartitionReadRequest index.
+                     * @member {string} index
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.index = "";
+    
+                    /**
+                     * PartitionReadRequest columns.
+                     * @member {Array.<string>} columns
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.columns = $util.emptyArray;
+    
+                    /**
+                     * PartitionReadRequest keySet.
+                     * @member {google.spanner.v1.IKeySet|null|undefined} keySet
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.keySet = null;
+    
+                    /**
+                     * PartitionReadRequest partitionOptions.
+                     * @member {google.spanner.v1.IPartitionOptions|null|undefined} partitionOptions
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @instance
+                     */
+                    PartitionReadRequest.prototype.partitionOptions = null;
+    
+                    /**
+                     * Creates a new PartitionReadRequest instance using the specified properties.
+                     * @function create
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionReadRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest instance
+                     */
+                    PartitionReadRequest.create = function create(properties) {
+                        return new PartitionReadRequest(properties);
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionReadRequest message. Does not implicitly {@link google.spanner.v1.PartitionReadRequest.verify|verify} messages.
+                     * @function encode
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionReadRequest} message PartitionReadRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionReadRequest.encode = function encode(message, writer) {
+                        if (!writer)
+                            writer = $Writer.create();
+                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
+                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.table != null && Object.hasOwnProperty.call(message, "table"))
+                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.table);
+                        if (message.index != null && Object.hasOwnProperty.call(message, "index"))
+                            writer.uint32(/* id 4, wireType 2 =*/34).string(message.index);
+                        if (message.columns != null && message.columns.length)
+                            for (var i = 0; i < message.columns.length; ++i)
+                                writer.uint32(/* id 5, wireType 2 =*/42).string(message.columns[i]);
+                        if (message.keySet != null && Object.hasOwnProperty.call(message, "keySet"))
+                            $root.google.spanner.v1.KeySet.encode(message.keySet, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
+                        if (message.partitionOptions != null && Object.hasOwnProperty.call(message, "partitionOptions"))
+                            $root.google.spanner.v1.PartitionOptions.encode(message.partitionOptions, writer.uint32(/* id 9, wireType 2 =*/74).fork()).ldelim();
+                        return writer;
+                    };
+    
+                    /**
+                     * Encodes the specified PartitionReadRequest message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionReadRequest.verify|verify} messages.
+                     * @function encodeDelimited
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {google.spanner.v1.IPartitionReadRequest} message PartitionReadRequest message or plain object to encode
+                     * @param {$protobuf.Writer} [writer] Writer to encode to
+                     * @returns {$protobuf.Writer} Writer
+                     */
+                    PartitionReadRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                        return this.encode(message, writer).ldelim();
+                    };
+    
+                    /**
+                     * Decodes a PartitionReadRequest message from the specified reader or buffer.
+                     * @function decode
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @param {number} [length] Message length if known beforehand
+                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionReadRequest.decode = function decode(reader, length) {
+                        if (!(reader instanceof $Reader))
+                            reader = $Reader.create(reader);
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionReadRequest();
+                        while (reader.pos < end) {
+                            var tag = reader.uint32();
+                            switch (tag >>> 3) {
+                            case 1: {
+                                    message.session = reader.string();
+                                    break;
+                                }
+                            case 2: {
+                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    message.table = reader.string();
+                                    break;
+                                }
+                            case 4: {
+                                    message.index = reader.string();
+                                    break;
+                                }
+                            case 5: {
+                                    if (!(message.columns && message.columns.length))
+                                        message.columns = [];
+                                    message.columns.push(reader.string());
+                                    break;
+                                }
+                            case 6: {
+                                    message.keySet = $root.google.spanner.v1.KeySet.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 9: {
+                                    message.partitionOptions = $root.google.spanner.v1.PartitionOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            default:
+                                reader.skipType(tag & 7);
+                                break;
+                            }
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Decodes a PartitionReadRequest message from the specified reader or buffer, length delimited.
+                     * @function decodeDelimited
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     * @throws {Error} If the payload is not a reader or valid buffer
+                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                     */
+                    PartitionReadRequest.decodeDelimited = function decodeDelimited(reader) {
+                        if (!(reader instanceof $Reader))
+                            reader = new $Reader(reader);
+                        return this.decode(reader, reader.uint32());
+                    };
+    
+                    /**
+                     * Verifies a PartitionReadRequest message.
+                     * @function verify
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {Object.<string,*>} message Plain object to verify
+                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                     */
+                    PartitionReadRequest.verify = function verify(message) {
+                        if (typeof message !== "object" || message === null)
+                            return "object expected";
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            if (!$util.isString(message.session))
+                                return "session: string expected";
+                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
+                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
+                            if (error)
+                                return "transaction." + error;
+                        }
+                        if (message.table != null && message.hasOwnProperty("table"))
+                            if (!$util.isString(message.table))
+                                return "table: string expected";
+                        if (message.index != null && message.hasOwnProperty("index"))
+                            if (!$util.isString(message.index))
+                                return "index: string expected";
+                        if (message.columns != null && message.hasOwnProperty("columns")) {
+                            if (!Array.isArray(message.columns))
+                                return "columns: array expected";
+                            for (var i = 0; i < message.columns.length; ++i)
+                                if (!$util.isString(message.columns[i]))
+                                    return "columns: string[] expected";
+                        }
+                        if (message.keySet != null && message.hasOwnProperty("keySet")) {
+                            var error = $root.google.spanner.v1.KeySet.verify(message.keySet);
+                            if (error)
+                                return "keySet." + error;
+                        }
+                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions")) {
+                            var error = $root.google.spanner.v1.PartitionOptions.verify(message.partitionOptions);
+                            if (error)
+                                return "partitionOptions." + error;
+                        }
+                        return null;
+                    };
+    
+                    /**
+                     * Creates a PartitionReadRequest message from a plain object. Also converts values to their respective internal types.
+                     * @function fromObject
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {Object.<string,*>} object Plain object
+                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     */
+                    PartitionReadRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.PartitionReadRequest)
+                            return object;
+                        var message = new $root.google.spanner.v1.PartitionReadRequest();
+                        if (object.session != null)
+                            message.session = String(object.session);
+                        if (object.transaction != null) {
+                            if (typeof object.transaction !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionReadRequest.transaction: object expected");
+                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
+                        }
+                        if (object.table != null)
+                            message.table = String(object.table);
+                        if (object.index != null)
+                            message.index = String(object.index);
+                        if (object.columns) {
+                            if (!Array.isArray(object.columns))
+                                throw TypeError(".google.spanner.v1.PartitionReadRequest.columns: array expected");
+                            message.columns = [];
+                            for (var i = 0; i < object.columns.length; ++i)
+                                message.columns[i] = String(object.columns[i]);
+                        }
+                        if (object.keySet != null) {
+                            if (typeof object.keySet !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionReadRequest.keySet: object expected");
+                            message.keySet = $root.google.spanner.v1.KeySet.fromObject(object.keySet);
+                        }
+                        if (object.partitionOptions != null) {
+                            if (typeof object.partitionOptions !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionReadRequest.partitionOptions: object expected");
+                            message.partitionOptions = $root.google.spanner.v1.PartitionOptions.fromObject(object.partitionOptions);
+                        }
+                        return message;
+                    };
+    
+                    /**
+                     * Creates a plain object from a PartitionReadRequest message. Also converts values to other types if specified.
+                     * @function toObject
+                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @static
+                     * @param {google.spanner.v1.PartitionReadRequest} message PartitionReadRequest
+                     * @param {$protobuf.IConversionOptions} [options] Conversion options
+                     * @returns {Object.<string,*>} Plain object
+                     */
+                    PartitionReadRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
                         if (options.arrays || options.defaults)
-                            object.resultSets = [];
-                        if (options.defaults)
-                            object.status = null;
-                        if (message.resultSets && message.resultSets.length) {
-                            object.resultSets = [];
-                            for (var j = 0; j < message.resultSets.length; ++j)
-                                object.resultSets[j] = $root.google.spanner.v1.ResultSet.toObject(message.resultSets[j], options);
+                            object.columns = [];
+                        if (options.defaults) {
+                            object.session = "";
+                            object.transaction = null;
+                            object.table = "";
+                            object.index = "";
+                            object.keySet = null;
+                            object.partitionOptions = null;
                         }
-                        if (message.status != null && message.hasOwnProperty("status"))
-                            object.status = $root.google.rpc.Status.toObject(message.status, options);
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
+                        if (message.table != null && message.hasOwnProperty("table"))
+                            object.table = message.table;
+                        if (message.index != null && message.hasOwnProperty("index"))
+                            object.index = message.index;
+                        if (message.columns && message.columns.length) {
+                            object.columns = [];
+                            for (var j = 0; j < message.columns.length; ++j)
+                                object.columns[j] = message.columns[j];
+                        }
+                        if (message.keySet != null && message.hasOwnProperty("keySet"))
+                            object.keySet = $root.google.spanner.v1.KeySet.toObject(message.keySet, options);
+                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions"))
+                            object.partitionOptions = $root.google.spanner.v1.PartitionOptions.toObject(message.partitionOptions, options);
                         return object;
                     };
     
                     /**
-                     * Converts this ExecuteBatchDmlResponse to JSON.
+                     * Converts this PartitionReadRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @memberof google.spanner.v1.PartitionReadRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    ExecuteBatchDmlResponse.prototype.toJSON = function toJSON() {
+                    PartitionReadRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for ExecuteBatchDmlResponse
+                     * Gets the default type url for PartitionReadRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.ExecuteBatchDmlResponse
+                     * @memberof google.spanner.v1.PartitionReadRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    ExecuteBatchDmlResponse.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    PartitionReadRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.ExecuteBatchDmlResponse";
+                        return typeUrlPrefix + "/google.spanner.v1.PartitionReadRequest";
                     };
     
-                    return ExecuteBatchDmlResponse;
+                    return PartitionReadRequest;
                 })();
     
-                v1.PartitionOptions = (function() {
+                v1.Partition = (function() {
     
                     /**
-                     * Properties of a PartitionOptions.
+                     * Properties of a Partition.
                      * @memberof google.spanner.v1
-                     * @interface IPartitionOptions
-                     * @property {number|Long|null} [partitionSizeBytes] PartitionOptions partitionSizeBytes
-                     * @property {number|Long|null} [maxPartitions] PartitionOptions maxPartitions
+                     * @interface IPartition
+                     * @property {Uint8Array|null} [partitionToken] Partition partitionToken
                      */
     
                     /**
-                     * Constructs a new PartitionOptions.
+                     * Constructs a new Partition.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a PartitionOptions.
-                     * @implements IPartitionOptions
+                     * @classdesc Represents a Partition.
+                     * @implements IPartition
                      * @constructor
-                     * @param {google.spanner.v1.IPartitionOptions=} [properties] Properties to set
+                     * @param {google.spanner.v1.IPartition=} [properties] Properties to set
                      */
-                    function PartitionOptions(properties) {
+                    function Partition(properties) {
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -45782,89 +50234,75 @@
                     }
     
                     /**
-                     * PartitionOptions partitionSizeBytes.
-                     * @member {number|Long} partitionSizeBytes
-                     * @memberof google.spanner.v1.PartitionOptions
-                     * @instance
-                     */
-                    PartitionOptions.prototype.partitionSizeBytes = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
-    
-                    /**
-                     * PartitionOptions maxPartitions.
-                     * @member {number|Long} maxPartitions
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * Partition partitionToken.
+                     * @member {Uint8Array} partitionToken
+                     * @memberof google.spanner.v1.Partition
                      * @instance
                      */
-                    PartitionOptions.prototype.maxPartitions = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+                    Partition.prototype.partitionToken = $util.newBuffer([]);
     
                     /**
-                     * Creates a new PartitionOptions instance using the specified properties.
+                     * Creates a new Partition instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
-                     * @param {google.spanner.v1.IPartitionOptions=} [properties] Properties to set
-                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions instance
+                     * @param {google.spanner.v1.IPartition=} [properties] Properties to set
+                     * @returns {google.spanner.v1.Partition} Partition instance
                      */
-                    PartitionOptions.create = function create(properties) {
-                        return new PartitionOptions(properties);
+                    Partition.create = function create(properties) {
+                        return new Partition(properties);
                     };
     
                     /**
-                     * Encodes the specified PartitionOptions message. Does not implicitly {@link google.spanner.v1.PartitionOptions.verify|verify} messages.
+                     * Encodes the specified Partition message. Does not implicitly {@link google.spanner.v1.Partition.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
-                     * @param {google.spanner.v1.IPartitionOptions} message PartitionOptions message or plain object to encode
+                     * @param {google.spanner.v1.IPartition} message Partition message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionOptions.encode = function encode(message, writer) {
+                    Partition.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
-                        if (message.partitionSizeBytes != null && Object.hasOwnProperty.call(message, "partitionSizeBytes"))
-                            writer.uint32(/* id 1, wireType 0 =*/8).int64(message.partitionSizeBytes);
-                        if (message.maxPartitions != null && Object.hasOwnProperty.call(message, "maxPartitions"))
-                            writer.uint32(/* id 2, wireType 0 =*/16).int64(message.maxPartitions);
+                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).bytes(message.partitionToken);
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified PartitionOptions message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionOptions.verify|verify} messages.
+                     * Encodes the specified Partition message, length delimited. Does not implicitly {@link google.spanner.v1.Partition.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
-                     * @param {google.spanner.v1.IPartitionOptions} message PartitionOptions message or plain object to encode
+                     * @param {google.spanner.v1.IPartition} message Partition message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionOptions.encodeDelimited = function encodeDelimited(message, writer) {
+                    Partition.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a PartitionOptions message from the specified reader or buffer.
+                     * Decodes a Partition message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     * @returns {google.spanner.v1.Partition} Partition
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionOptions.decode = function decode(reader, length) {
+                    Partition.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionOptions();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.Partition();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
                             case 1: {
-                                    message.partitionSizeBytes = reader.int64();
-                                    break;
-                                }
-                            case 2: {
-                                    message.maxPartitions = reader.int64();
+                                    message.partitionToken = reader.bytes();
                                     break;
                                 }
                             default:
@@ -45876,165 +50314,133 @@
                     };
     
                     /**
-                     * Decodes a PartitionOptions message from the specified reader or buffer, length delimited.
+                     * Decodes a Partition message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     * @returns {google.spanner.v1.Partition} Partition
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionOptions.decodeDelimited = function decodeDelimited(reader) {
+                    Partition.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a PartitionOptions message.
+                     * Verifies a Partition message.
                      * @function verify
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    PartitionOptions.verify = function verify(message) {
+                    Partition.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.partitionSizeBytes != null && message.hasOwnProperty("partitionSizeBytes"))
-                            if (!$util.isInteger(message.partitionSizeBytes) && !(message.partitionSizeBytes && $util.isInteger(message.partitionSizeBytes.low) && $util.isInteger(message.partitionSizeBytes.high)))
-                                return "partitionSizeBytes: integer|Long expected";
-                        if (message.maxPartitions != null && message.hasOwnProperty("maxPartitions"))
-                            if (!$util.isInteger(message.maxPartitions) && !(message.maxPartitions && $util.isInteger(message.maxPartitions.low) && $util.isInteger(message.maxPartitions.high)))
-                                return "maxPartitions: integer|Long expected";
+                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
+                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
+                                return "partitionToken: buffer expected";
                         return null;
                     };
     
                     /**
-                     * Creates a PartitionOptions message from a plain object. Also converts values to their respective internal types.
+                     * Creates a Partition message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.PartitionOptions} PartitionOptions
+                     * @returns {google.spanner.v1.Partition} Partition
                      */
-                    PartitionOptions.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.PartitionOptions)
+                    Partition.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.Partition)
                             return object;
-                        var message = new $root.google.spanner.v1.PartitionOptions();
-                        if (object.partitionSizeBytes != null)
-                            if ($util.Long)
-                                (message.partitionSizeBytes = $util.Long.fromValue(object.partitionSizeBytes)).unsigned = false;
-                            else if (typeof object.partitionSizeBytes === "string")
-                                message.partitionSizeBytes = parseInt(object.partitionSizeBytes, 10);
-                            else if (typeof object.partitionSizeBytes === "number")
-                                message.partitionSizeBytes = object.partitionSizeBytes;
-                            else if (typeof object.partitionSizeBytes === "object")
-                                message.partitionSizeBytes = new $util.LongBits(object.partitionSizeBytes.low >>> 0, object.partitionSizeBytes.high >>> 0).toNumber();
-                        if (object.maxPartitions != null)
-                            if ($util.Long)
-                                (message.maxPartitions = $util.Long.fromValue(object.maxPartitions)).unsigned = false;
-                            else if (typeof object.maxPartitions === "string")
-                                message.maxPartitions = parseInt(object.maxPartitions, 10);
-                            else if (typeof object.maxPartitions === "number")
-                                message.maxPartitions = object.maxPartitions;
-                            else if (typeof object.maxPartitions === "object")
-                                message.maxPartitions = new $util.LongBits(object.maxPartitions.low >>> 0, object.maxPartitions.high >>> 0).toNumber();
+                        var message = new $root.google.spanner.v1.Partition();
+                        if (object.partitionToken != null)
+                            if (typeof object.partitionToken === "string")
+                                $util.base64.decode(object.partitionToken, message.partitionToken = $util.newBuffer($util.base64.length(object.partitionToken)), 0);
+                            else if (object.partitionToken.length >= 0)
+                                message.partitionToken = object.partitionToken;
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a PartitionOptions message. Also converts values to other types if specified.
+                     * Creates a plain object from a Partition message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
-                     * @param {google.spanner.v1.PartitionOptions} message PartitionOptions
+                     * @param {google.spanner.v1.Partition} message Partition
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    PartitionOptions.toObject = function toObject(message, options) {
+                    Partition.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
-                        if (options.defaults) {
-                            if ($util.Long) {
-                                var long = new $util.Long(0, 0, false);
-                                object.partitionSizeBytes = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
-                            } else
-                                object.partitionSizeBytes = options.longs === String ? "0" : 0;
-                            if ($util.Long) {
-                                var long = new $util.Long(0, 0, false);
-                                object.maxPartitions = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
-                            } else
-                                object.maxPartitions = options.longs === String ? "0" : 0;
-                        }
-                        if (message.partitionSizeBytes != null && message.hasOwnProperty("partitionSizeBytes"))
-                            if (typeof message.partitionSizeBytes === "number")
-                                object.partitionSizeBytes = options.longs === String ? String(message.partitionSizeBytes) : message.partitionSizeBytes;
-                            else
-                                object.partitionSizeBytes = options.longs === String ? $util.Long.prototype.toString.call(message.partitionSizeBytes) : options.longs === Number ? new $util.LongBits(message.partitionSizeBytes.low >>> 0, message.partitionSizeBytes.high >>> 0).toNumber() : message.partitionSizeBytes;
-                        if (message.maxPartitions != null && message.hasOwnProperty("maxPartitions"))
-                            if (typeof message.maxPartitions === "number")
-                                object.maxPartitions = options.longs === String ? String(message.maxPartitions) : message.maxPartitions;
-                            else
-                                object.maxPartitions = options.longs === String ? $util.Long.prototype.toString.call(message.maxPartitions) : options.longs === Number ? new $util.LongBits(message.maxPartitions.low >>> 0, message.maxPartitions.high >>> 0).toNumber() : message.maxPartitions;
+                        if (options.defaults)
+                            if (options.bytes === String)
+                                object.partitionToken = "";
+                            else {
+                                object.partitionToken = [];
+                                if (options.bytes !== Array)
+                                    object.partitionToken = $util.newBuffer(object.partitionToken);
+                            }
+                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
+                            object.partitionToken = options.bytes === String ? $util.base64.encode(message.partitionToken, 0, message.partitionToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.partitionToken) : message.partitionToken;
                         return object;
                     };
     
                     /**
-                     * Converts this PartitionOptions to JSON.
+                     * Converts this Partition to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    PartitionOptions.prototype.toJSON = function toJSON() {
+                    Partition.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for PartitionOptions
+                     * Gets the default type url for Partition
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.PartitionOptions
+                     * @memberof google.spanner.v1.Partition
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    PartitionOptions.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    Partition.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.PartitionOptions";
+                        return typeUrlPrefix + "/google.spanner.v1.Partition";
                     };
     
-                    return PartitionOptions;
+                    return Partition;
                 })();
     
-                v1.PartitionQueryRequest = (function() {
+                v1.PartitionResponse = (function() {
     
                     /**
-                     * Properties of a PartitionQueryRequest.
+                     * Properties of a PartitionResponse.
                      * @memberof google.spanner.v1
-                     * @interface IPartitionQueryRequest
-                     * @property {string|null} [session] PartitionQueryRequest session
-                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] PartitionQueryRequest transaction
-                     * @property {string|null} [sql] PartitionQueryRequest sql
-                     * @property {google.protobuf.IStruct|null} [params] PartitionQueryRequest params
-                     * @property {Object.<string,google.spanner.v1.IType>|null} [paramTypes] PartitionQueryRequest paramTypes
-                     * @property {google.spanner.v1.IPartitionOptions|null} [partitionOptions] PartitionQueryRequest partitionOptions
+                     * @interface IPartitionResponse
+                     * @property {Array.<google.spanner.v1.IPartition>|null} [partitions] PartitionResponse partitions
+                     * @property {google.spanner.v1.ITransaction|null} [transaction] PartitionResponse transaction
                      */
     
                     /**
-                     * Constructs a new PartitionQueryRequest.
+                     * Constructs a new PartitionResponse.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a PartitionQueryRequest.
-                     * @implements IPartitionQueryRequest
+                     * @classdesc Represents a PartitionResponse.
+                     * @implements IPartitionResponse
                      * @constructor
-                     * @param {google.spanner.v1.IPartitionQueryRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IPartitionResponse=} [properties] Properties to set
                      */
-                    function PartitionQueryRequest(properties) {
-                        this.paramTypes = {};
+                    function PartitionResponse(properties) {
+                        this.partitions = [];
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -46042,167 +50448,92 @@
                     }
     
                     /**
-                     * PartitionQueryRequest session.
-                     * @member {string} session
-                     * @memberof google.spanner.v1.PartitionQueryRequest
-                     * @instance
-                     */
-                    PartitionQueryRequest.prototype.session = "";
-    
-                    /**
-                     * PartitionQueryRequest transaction.
-                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
-                     * @memberof google.spanner.v1.PartitionQueryRequest
-                     * @instance
-                     */
-                    PartitionQueryRequest.prototype.transaction = null;
-    
-                    /**
-                     * PartitionQueryRequest sql.
-                     * @member {string} sql
-                     * @memberof google.spanner.v1.PartitionQueryRequest
-                     * @instance
-                     */
-                    PartitionQueryRequest.prototype.sql = "";
-    
-                    /**
-                     * PartitionQueryRequest params.
-                     * @member {google.protobuf.IStruct|null|undefined} params
-                     * @memberof google.spanner.v1.PartitionQueryRequest
-                     * @instance
-                     */
-                    PartitionQueryRequest.prototype.params = null;
-    
-                    /**
-                     * PartitionQueryRequest paramTypes.
-                     * @member {Object.<string,google.spanner.v1.IType>} paramTypes
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * PartitionResponse partitions.
+                     * @member {Array.<google.spanner.v1.IPartition>} partitions
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @instance
                      */
-                    PartitionQueryRequest.prototype.paramTypes = $util.emptyObject;
+                    PartitionResponse.prototype.partitions = $util.emptyArray;
     
                     /**
-                     * PartitionQueryRequest partitionOptions.
-                     * @member {google.spanner.v1.IPartitionOptions|null|undefined} partitionOptions
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * PartitionResponse transaction.
+                     * @member {google.spanner.v1.ITransaction|null|undefined} transaction
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @instance
                      */
-                    PartitionQueryRequest.prototype.partitionOptions = null;
+                    PartitionResponse.prototype.transaction = null;
     
                     /**
-                     * Creates a new PartitionQueryRequest instance using the specified properties.
+                     * Creates a new PartitionResponse instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
-                     * @param {google.spanner.v1.IPartitionQueryRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest instance
+                     * @param {google.spanner.v1.IPartitionResponse=} [properties] Properties to set
+                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse instance
                      */
-                    PartitionQueryRequest.create = function create(properties) {
-                        return new PartitionQueryRequest(properties);
+                    PartitionResponse.create = function create(properties) {
+                        return new PartitionResponse(properties);
                     };
     
                     /**
-                     * Encodes the specified PartitionQueryRequest message. Does not implicitly {@link google.spanner.v1.PartitionQueryRequest.verify|verify} messages.
+                     * Encodes the specified PartitionResponse message. Does not implicitly {@link google.spanner.v1.PartitionResponse.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
-                     * @param {google.spanner.v1.IPartitionQueryRequest} message PartitionQueryRequest message or plain object to encode
+                     * @param {google.spanner.v1.IPartitionResponse} message PartitionResponse message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionQueryRequest.encode = function encode(message, writer) {
+                    PartitionResponse.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
-                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
-                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.partitions != null && message.partitions.length)
+                            for (var i = 0; i < message.partitions.length; ++i)
+                                $root.google.spanner.v1.Partition.encode(message.partitions[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
                         if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
-                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        if (message.sql != null && Object.hasOwnProperty.call(message, "sql"))
-                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.sql);
-                        if (message.params != null && Object.hasOwnProperty.call(message, "params"))
-                            $root.google.protobuf.Struct.encode(message.params, writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
-                        if (message.paramTypes != null && Object.hasOwnProperty.call(message, "paramTypes"))
-                            for (var keys = Object.keys(message.paramTypes), i = 0; i < keys.length; ++i) {
-                                writer.uint32(/* id 5, wireType 2 =*/42).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]);
-                                $root.google.spanner.v1.Type.encode(message.paramTypes[keys[i]], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim().ldelim();
-                            }
-                        if (message.partitionOptions != null && Object.hasOwnProperty.call(message, "partitionOptions"))
-                            $root.google.spanner.v1.PartitionOptions.encode(message.partitionOptions, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
+                            $root.google.spanner.v1.Transaction.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified PartitionQueryRequest message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionQueryRequest.verify|verify} messages.
+                     * Encodes the specified PartitionResponse message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionResponse.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
-                     * @param {google.spanner.v1.IPartitionQueryRequest} message PartitionQueryRequest message or plain object to encode
+                     * @param {google.spanner.v1.IPartitionResponse} message PartitionResponse message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionQueryRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    PartitionResponse.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a PartitionQueryRequest message from the specified reader or buffer.
+                     * Decodes a PartitionResponse message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
+                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionQueryRequest.decode = function decode(reader, length) {
+                    PartitionResponse.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionQueryRequest(), key, value;
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionResponse();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
                             case 1: {
-                                    message.session = reader.string();
+                                    if (!(message.partitions && message.partitions.length))
+                                        message.partitions = [];
+                                    message.partitions.push($root.google.spanner.v1.Partition.decode(reader, reader.uint32()));
                                     break;
                                 }
                             case 2: {
-                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 3: {
-                                    message.sql = reader.string();
-                                    break;
-                                }
-                            case 4: {
-                                    message.params = $root.google.protobuf.Struct.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 5: {
-                                    if (message.paramTypes === $util.emptyObject)
-                                        message.paramTypes = {};
-                                    var end2 = reader.uint32() + reader.pos;
-                                    key = "";
-                                    value = null;
-                                    while (reader.pos < end2) {
-                                        var tag2 = reader.uint32();
-                                        switch (tag2 >>> 3) {
-                                        case 1:
-                                            key = reader.string();
-                                            break;
-                                        case 2:
-                                            value = $root.google.spanner.v1.Type.decode(reader, reader.uint32());
-                                            break;
-                                        default:
-                                            reader.skipType(tag2 & 7);
-                                            break;
-                                        }
-                                    }
-                                    message.paramTypes[key] = value;
-                                    break;
-                                }
-                            case 6: {
-                                    message.partitionOptions = $root.google.spanner.v1.PartitionOptions.decode(reader, reader.uint32());
+                                    message.transaction = $root.google.spanner.v1.Transaction.decode(reader, reader.uint32());
                                     break;
                                 }
                             default:
@@ -46214,204 +50545,164 @@
                     };
     
                     /**
-                     * Decodes a PartitionQueryRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a PartitionResponse message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
+                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionQueryRequest.decodeDelimited = function decodeDelimited(reader) {
+                    PartitionResponse.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a PartitionQueryRequest message.
+                     * Verifies a PartitionResponse message.
                      * @function verify
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    PartitionQueryRequest.verify = function verify(message) {
+                    PartitionResponse.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            if (!$util.isString(message.session))
-                                return "session: string expected";
-                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
-                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
-                            if (error)
-                                return "transaction." + error;
-                        }
-                        if (message.sql != null && message.hasOwnProperty("sql"))
-                            if (!$util.isString(message.sql))
-                                return "sql: string expected";
-                        if (message.params != null && message.hasOwnProperty("params")) {
-                            var error = $root.google.protobuf.Struct.verify(message.params);
-                            if (error)
-                                return "params." + error;
-                        }
-                        if (message.paramTypes != null && message.hasOwnProperty("paramTypes")) {
-                            if (!$util.isObject(message.paramTypes))
-                                return "paramTypes: object expected";
-                            var key = Object.keys(message.paramTypes);
-                            for (var i = 0; i < key.length; ++i) {
-                                var error = $root.google.spanner.v1.Type.verify(message.paramTypes[key[i]]);
+                        if (message.partitions != null && message.hasOwnProperty("partitions")) {
+                            if (!Array.isArray(message.partitions))
+                                return "partitions: array expected";
+                            for (var i = 0; i < message.partitions.length; ++i) {
+                                var error = $root.google.spanner.v1.Partition.verify(message.partitions[i]);
                                 if (error)
-                                    return "paramTypes." + error;
+                                    return "partitions." + error;
                             }
                         }
-                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions")) {
-                            var error = $root.google.spanner.v1.PartitionOptions.verify(message.partitionOptions);
+                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
+                            var error = $root.google.spanner.v1.Transaction.verify(message.transaction);
                             if (error)
-                                return "partitionOptions." + error;
+                                return "transaction." + error;
                         }
                         return null;
                     };
     
                     /**
-                     * Creates a PartitionQueryRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a PartitionResponse message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.PartitionQueryRequest} PartitionQueryRequest
+                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
                      */
-                    PartitionQueryRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.PartitionQueryRequest)
+                    PartitionResponse.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.PartitionResponse)
                             return object;
-                        var message = new $root.google.spanner.v1.PartitionQueryRequest();
-                        if (object.session != null)
-                            message.session = String(object.session);
-                        if (object.transaction != null) {
-                            if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.transaction: object expected");
-                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
-                        }
-                        if (object.sql != null)
-                            message.sql = String(object.sql);
-                        if (object.params != null) {
-                            if (typeof object.params !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.params: object expected");
-                            message.params = $root.google.protobuf.Struct.fromObject(object.params);
-                        }
-                        if (object.paramTypes) {
-                            if (typeof object.paramTypes !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.paramTypes: object expected");
-                            message.paramTypes = {};
-                            for (var keys = Object.keys(object.paramTypes), i = 0; i < keys.length; ++i) {
-                                if (typeof object.paramTypes[keys[i]] !== "object")
-                                    throw TypeError(".google.spanner.v1.PartitionQueryRequest.paramTypes: object expected");
-                                message.paramTypes[keys[i]] = $root.google.spanner.v1.Type.fromObject(object.paramTypes[keys[i]]);
+                        var message = new $root.google.spanner.v1.PartitionResponse();
+                        if (object.partitions) {
+                            if (!Array.isArray(object.partitions))
+                                throw TypeError(".google.spanner.v1.PartitionResponse.partitions: array expected");
+                            message.partitions = [];
+                            for (var i = 0; i < object.partitions.length; ++i) {
+                                if (typeof object.partitions[i] !== "object")
+                                    throw TypeError(".google.spanner.v1.PartitionResponse.partitions: object expected");
+                                message.partitions[i] = $root.google.spanner.v1.Partition.fromObject(object.partitions[i]);
                             }
                         }
-                        if (object.partitionOptions != null) {
-                            if (typeof object.partitionOptions !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionQueryRequest.partitionOptions: object expected");
-                            message.partitionOptions = $root.google.spanner.v1.PartitionOptions.fromObject(object.partitionOptions);
+                        if (object.transaction != null) {
+                            if (typeof object.transaction !== "object")
+                                throw TypeError(".google.spanner.v1.PartitionResponse.transaction: object expected");
+                            message.transaction = $root.google.spanner.v1.Transaction.fromObject(object.transaction);
                         }
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a PartitionQueryRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a PartitionResponse message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
-                     * @param {google.spanner.v1.PartitionQueryRequest} message PartitionQueryRequest
+                     * @param {google.spanner.v1.PartitionResponse} message PartitionResponse
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    PartitionQueryRequest.toObject = function toObject(message, options) {
+                    PartitionResponse.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
-                        if (options.objects || options.defaults)
-                            object.paramTypes = {};
-                        if (options.defaults) {
-                            object.session = "";
+                        if (options.arrays || options.defaults)
+                            object.partitions = [];
+                        if (options.defaults)
                             object.transaction = null;
-                            object.sql = "";
-                            object.params = null;
-                            object.partitionOptions = null;
-                        }
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            object.session = message.session;
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
-                        if (message.sql != null && message.hasOwnProperty("sql"))
-                            object.sql = message.sql;
-                        if (message.params != null && message.hasOwnProperty("params"))
-                            object.params = $root.google.protobuf.Struct.toObject(message.params, options);
-                        var keys2;
-                        if (message.paramTypes && (keys2 = Object.keys(message.paramTypes)).length) {
-                            object.paramTypes = {};
-                            for (var j = 0; j < keys2.length; ++j)
-                                object.paramTypes[keys2[j]] = $root.google.spanner.v1.Type.toObject(message.paramTypes[keys2[j]], options);
+                        if (message.partitions && message.partitions.length) {
+                            object.partitions = [];
+                            for (var j = 0; j < message.partitions.length; ++j)
+                                object.partitions[j] = $root.google.spanner.v1.Partition.toObject(message.partitions[j], options);
                         }
-                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions"))
-                            object.partitionOptions = $root.google.spanner.v1.PartitionOptions.toObject(message.partitionOptions, options);
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.Transaction.toObject(message.transaction, options);
                         return object;
                     };
     
                     /**
-                     * Converts this PartitionQueryRequest to JSON.
+                     * Converts this PartitionResponse to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    PartitionQueryRequest.prototype.toJSON = function toJSON() {
+                    PartitionResponse.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for PartitionQueryRequest
+                     * Gets the default type url for PartitionResponse
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.PartitionQueryRequest
+                     * @memberof google.spanner.v1.PartitionResponse
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    PartitionQueryRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    PartitionResponse.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.PartitionQueryRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.PartitionResponse";
                     };
     
-                    return PartitionQueryRequest;
+                    return PartitionResponse;
                 })();
     
-                v1.PartitionReadRequest = (function() {
+                v1.ReadRequest = (function() {
     
                     /**
-                     * Properties of a PartitionReadRequest.
+                     * Properties of a ReadRequest.
                      * @memberof google.spanner.v1
-                     * @interface IPartitionReadRequest
-                     * @property {string|null} [session] PartitionReadRequest session
-                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] PartitionReadRequest transaction
-                     * @property {string|null} [table] PartitionReadRequest table
-                     * @property {string|null} [index] PartitionReadRequest index
-                     * @property {Array.<string>|null} [columns] PartitionReadRequest columns
-                     * @property {google.spanner.v1.IKeySet|null} [keySet] PartitionReadRequest keySet
-                     * @property {google.spanner.v1.IPartitionOptions|null} [partitionOptions] PartitionReadRequest partitionOptions
+                     * @interface IReadRequest
+                     * @property {string|null} [session] ReadRequest session
+                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ReadRequest transaction
+                     * @property {string|null} [table] ReadRequest table
+                     * @property {string|null} [index] ReadRequest index
+                     * @property {Array.<string>|null} [columns] ReadRequest columns
+                     * @property {google.spanner.v1.IKeySet|null} [keySet] ReadRequest keySet
+                     * @property {number|Long|null} [limit] ReadRequest limit
+                     * @property {Uint8Array|null} [resumeToken] ReadRequest resumeToken
+                     * @property {Uint8Array|null} [partitionToken] ReadRequest partitionToken
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ReadRequest requestOptions
+                     * @property {google.spanner.v1.IDirectedReadOptions|null} [directedReadOptions] ReadRequest directedReadOptions
+                     * @property {boolean|null} [dataBoostEnabled] ReadRequest dataBoostEnabled
                      */
     
                     /**
-                     * Constructs a new PartitionReadRequest.
+                     * Constructs a new ReadRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a PartitionReadRequest.
-                     * @implements IPartitionReadRequest
+                     * @classdesc Represents a ReadRequest.
+                     * @implements IReadRequest
                      * @constructor
-                     * @param {google.spanner.v1.IPartitionReadRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IReadRequest=} [properties] Properties to set
                      */
-                    function PartitionReadRequest(properties) {
+                    function ReadRequest(properties) {
                         this.columns = [];
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
@@ -46420,83 +50711,123 @@
                     }
     
                     /**
-                     * PartitionReadRequest session.
+                     * ReadRequest session.
                      * @member {string} session
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.session = "";
+                    ReadRequest.prototype.session = "";
     
                     /**
-                     * PartitionReadRequest transaction.
+                     * ReadRequest transaction.
                      * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.transaction = null;
+                    ReadRequest.prototype.transaction = null;
     
                     /**
-                     * PartitionReadRequest table.
+                     * ReadRequest table.
                      * @member {string} table
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.table = "";
+                    ReadRequest.prototype.table = "";
     
                     /**
-                     * PartitionReadRequest index.
+                     * ReadRequest index.
                      * @member {string} index
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.index = "";
+                    ReadRequest.prototype.index = "";
     
                     /**
-                     * PartitionReadRequest columns.
+                     * ReadRequest columns.
                      * @member {Array.<string>} columns
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.columns = $util.emptyArray;
+                    ReadRequest.prototype.columns = $util.emptyArray;
     
                     /**
-                     * PartitionReadRequest keySet.
+                     * ReadRequest keySet.
                      * @member {google.spanner.v1.IKeySet|null|undefined} keySet
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.keySet = null;
+                    ReadRequest.prototype.keySet = null;
     
                     /**
-                     * PartitionReadRequest partitionOptions.
-                     * @member {google.spanner.v1.IPartitionOptions|null|undefined} partitionOptions
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * ReadRequest limit.
+                     * @member {number|Long} limit
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      */
-                    PartitionReadRequest.prototype.partitionOptions = null;
+                    ReadRequest.prototype.limit = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
     
                     /**
-                     * Creates a new PartitionReadRequest instance using the specified properties.
+                     * ReadRequest resumeToken.
+                     * @member {Uint8Array} resumeToken
+                     * @memberof google.spanner.v1.ReadRequest
+                     * @instance
+                     */
+                    ReadRequest.prototype.resumeToken = $util.newBuffer([]);
+    
+                    /**
+                     * ReadRequest partitionToken.
+                     * @member {Uint8Array} partitionToken
+                     * @memberof google.spanner.v1.ReadRequest
+                     * @instance
+                     */
+                    ReadRequest.prototype.partitionToken = $util.newBuffer([]);
+    
+                    /**
+                     * ReadRequest requestOptions.
+                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
+                     * @memberof google.spanner.v1.ReadRequest
+                     * @instance
+                     */
+                    ReadRequest.prototype.requestOptions = null;
+    
+                    /**
+                     * ReadRequest directedReadOptions.
+                     * @member {google.spanner.v1.IDirectedReadOptions|null|undefined} directedReadOptions
+                     * @memberof google.spanner.v1.ReadRequest
+                     * @instance
+                     */
+                    ReadRequest.prototype.directedReadOptions = null;
+    
+                    /**
+                     * ReadRequest dataBoostEnabled.
+                     * @member {boolean} dataBoostEnabled
+                     * @memberof google.spanner.v1.ReadRequest
+                     * @instance
+                     */
+                    ReadRequest.prototype.dataBoostEnabled = false;
+    
+                    /**
+                     * Creates a new ReadRequest instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionReadRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest instance
+                     * @param {google.spanner.v1.IReadRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.ReadRequest} ReadRequest instance
                      */
-                    PartitionReadRequest.create = function create(properties) {
-                        return new PartitionReadRequest(properties);
+                    ReadRequest.create = function create(properties) {
+                        return new ReadRequest(properties);
                     };
     
                     /**
-                     * Encodes the specified PartitionReadRequest message. Does not implicitly {@link google.spanner.v1.PartitionReadRequest.verify|verify} messages.
+                     * Encodes the specified ReadRequest message. Does not implicitly {@link google.spanner.v1.ReadRequest.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionReadRequest} message PartitionReadRequest message or plain object to encode
+                     * @param {google.spanner.v1.IReadRequest} message ReadRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionReadRequest.encode = function encode(message, writer) {
+                    ReadRequest.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
                         if (message.session != null && Object.hasOwnProperty.call(message, "session"))
@@ -46512,39 +50843,49 @@
                                 writer.uint32(/* id 5, wireType 2 =*/42).string(message.columns[i]);
                         if (message.keySet != null && Object.hasOwnProperty.call(message, "keySet"))
                             $root.google.spanner.v1.KeySet.encode(message.keySet, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
-                        if (message.partitionOptions != null && Object.hasOwnProperty.call(message, "partitionOptions"))
-                            $root.google.spanner.v1.PartitionOptions.encode(message.partitionOptions, writer.uint32(/* id 9, wireType 2 =*/74).fork()).ldelim();
+                        if (message.limit != null && Object.hasOwnProperty.call(message, "limit"))
+                            writer.uint32(/* id 8, wireType 0 =*/64).int64(message.limit);
+                        if (message.resumeToken != null && Object.hasOwnProperty.call(message, "resumeToken"))
+                            writer.uint32(/* id 9, wireType 2 =*/74).bytes(message.resumeToken);
+                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
+                            writer.uint32(/* id 10, wireType 2 =*/82).bytes(message.partitionToken);
+                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
+                        if (message.directedReadOptions != null && Object.hasOwnProperty.call(message, "directedReadOptions"))
+                            $root.google.spanner.v1.DirectedReadOptions.encode(message.directedReadOptions, writer.uint32(/* id 14, wireType 2 =*/114).fork()).ldelim();
+                        if (message.dataBoostEnabled != null && Object.hasOwnProperty.call(message, "dataBoostEnabled"))
+                            writer.uint32(/* id 15, wireType 0 =*/120).bool(message.dataBoostEnabled);
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified PartitionReadRequest message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionReadRequest.verify|verify} messages.
+                     * Encodes the specified ReadRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ReadRequest.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionReadRequest} message PartitionReadRequest message or plain object to encode
+                     * @param {google.spanner.v1.IReadRequest} message ReadRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionReadRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    ReadRequest.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a PartitionReadRequest message from the specified reader or buffer.
+                     * Decodes a ReadRequest message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionReadRequest.decode = function decode(reader, length) {
+                    ReadRequest.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionReadRequest();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ReadRequest();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
@@ -46574,8 +50915,28 @@
                                     message.keySet = $root.google.spanner.v1.KeySet.decode(reader, reader.uint32());
                                     break;
                                 }
+                            case 8: {
+                                    message.limit = reader.int64();
+                                    break;
+                                }
                             case 9: {
-                                    message.partitionOptions = $root.google.spanner.v1.PartitionOptions.decode(reader, reader.uint32());
+                                    message.resumeToken = reader.bytes();
+                                    break;
+                                }
+                            case 10: {
+                                    message.partitionToken = reader.bytes();
+                                    break;
+                                }
+                            case 11: {
+                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 14: {
+                                    message.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 15: {
+                                    message.dataBoostEnabled = reader.bool();
                                     break;
                                 }
                             default:
@@ -46587,30 +50948,30 @@
                     };
     
                     /**
-                     * Decodes a PartitionReadRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a ReadRequest message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionReadRequest.decodeDelimited = function decodeDelimited(reader) {
+                    ReadRequest.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a PartitionReadRequest message.
+                     * Verifies a ReadRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    PartitionReadRequest.verify = function verify(message) {
+                    ReadRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
                         if (message.session != null && message.hasOwnProperty("session"))
@@ -46639,31 +51000,48 @@
                             if (error)
                                 return "keySet." + error;
                         }
-                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions")) {
-                            var error = $root.google.spanner.v1.PartitionOptions.verify(message.partitionOptions);
+                        if (message.limit != null && message.hasOwnProperty("limit"))
+                            if (!$util.isInteger(message.limit) && !(message.limit && $util.isInteger(message.limit.low) && $util.isInteger(message.limit.high)))
+                                return "limit: integer|Long expected";
+                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
+                            if (!(message.resumeToken && typeof message.resumeToken.length === "number" || $util.isString(message.resumeToken)))
+                                return "resumeToken: buffer expected";
+                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
+                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
+                                return "partitionToken: buffer expected";
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
+                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
                             if (error)
-                                return "partitionOptions." + error;
+                                return "requestOptions." + error;
                         }
+                        if (message.directedReadOptions != null && message.hasOwnProperty("directedReadOptions")) {
+                            var error = $root.google.spanner.v1.DirectedReadOptions.verify(message.directedReadOptions);
+                            if (error)
+                                return "directedReadOptions." + error;
+                        }
+                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
+                            if (typeof message.dataBoostEnabled !== "boolean")
+                                return "dataBoostEnabled: boolean expected";
                         return null;
                     };
     
                     /**
-                     * Creates a PartitionReadRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a ReadRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.PartitionReadRequest
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.PartitionReadRequest} PartitionReadRequest
+                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
                      */
-                    PartitionReadRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.PartitionReadRequest)
+                    ReadRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.ReadRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.PartitionReadRequest();
+                        var message = new $root.google.spanner.v1.ReadRequest();
                         if (object.session != null)
                             message.session = String(object.session);
                         if (object.transaction != null) {
                             if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionReadRequest.transaction: object expected");
+                                throw TypeError(".google.spanner.v1.ReadRequest.transaction: object expected");
                             message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
                         }
                         if (object.table != null)
@@ -46672,267 +51050,83 @@
                             message.index = String(object.index);
                         if (object.columns) {
                             if (!Array.isArray(object.columns))
-                                throw TypeError(".google.spanner.v1.PartitionReadRequest.columns: array expected");
+                                throw TypeError(".google.spanner.v1.ReadRequest.columns: array expected");
                             message.columns = [];
                             for (var i = 0; i < object.columns.length; ++i)
                                 message.columns[i] = String(object.columns[i]);
                         }
                         if (object.keySet != null) {
                             if (typeof object.keySet !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionReadRequest.keySet: object expected");
+                                throw TypeError(".google.spanner.v1.ReadRequest.keySet: object expected");
                             message.keySet = $root.google.spanner.v1.KeySet.fromObject(object.keySet);
                         }
-                        if (object.partitionOptions != null) {
-                            if (typeof object.partitionOptions !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionReadRequest.partitionOptions: object expected");
-                            message.partitionOptions = $root.google.spanner.v1.PartitionOptions.fromObject(object.partitionOptions);
-                        }
-                        return message;
-                    };
-    
-                    /**
-                     * Creates a plain object from a PartitionReadRequest message. Also converts values to other types if specified.
-                     * @function toObject
-                     * @memberof google.spanner.v1.PartitionReadRequest
-                     * @static
-                     * @param {google.spanner.v1.PartitionReadRequest} message PartitionReadRequest
-                     * @param {$protobuf.IConversionOptions} [options] Conversion options
-                     * @returns {Object.<string,*>} Plain object
-                     */
-                    PartitionReadRequest.toObject = function toObject(message, options) {
-                        if (!options)
-                            options = {};
-                        var object = {};
-                        if (options.arrays || options.defaults)
-                            object.columns = [];
-                        if (options.defaults) {
-                            object.session = "";
-                            object.transaction = null;
-                            object.table = "";
-                            object.index = "";
-                            object.keySet = null;
-                            object.partitionOptions = null;
-                        }
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            object.session = message.session;
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
-                        if (message.table != null && message.hasOwnProperty("table"))
-                            object.table = message.table;
-                        if (message.index != null && message.hasOwnProperty("index"))
-                            object.index = message.index;
-                        if (message.columns && message.columns.length) {
-                            object.columns = [];
-                            for (var j = 0; j < message.columns.length; ++j)
-                                object.columns[j] = message.columns[j];
-                        }
-                        if (message.keySet != null && message.hasOwnProperty("keySet"))
-                            object.keySet = $root.google.spanner.v1.KeySet.toObject(message.keySet, options);
-                        if (message.partitionOptions != null && message.hasOwnProperty("partitionOptions"))
-                            object.partitionOptions = $root.google.spanner.v1.PartitionOptions.toObject(message.partitionOptions, options);
-                        return object;
-                    };
-    
-                    /**
-                     * Converts this PartitionReadRequest to JSON.
-                     * @function toJSON
-                     * @memberof google.spanner.v1.PartitionReadRequest
-                     * @instance
-                     * @returns {Object.<string,*>} JSON object
-                     */
-                    PartitionReadRequest.prototype.toJSON = function toJSON() {
-                        return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
-                    };
-    
-                    /**
-                     * Gets the default type url for PartitionReadRequest
-                     * @function getTypeUrl
-                     * @memberof google.spanner.v1.PartitionReadRequest
-                     * @static
-                     * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
-                     * @returns {string} The default type url
-                     */
-                    PartitionReadRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
-                        if (typeUrlPrefix === undefined) {
-                            typeUrlPrefix = "type.googleapis.com";
-                        }
-                        return typeUrlPrefix + "/google.spanner.v1.PartitionReadRequest";
-                    };
-    
-                    return PartitionReadRequest;
-                })();
-    
-                v1.Partition = (function() {
-    
-                    /**
-                     * Properties of a Partition.
-                     * @memberof google.spanner.v1
-                     * @interface IPartition
-                     * @property {Uint8Array|null} [partitionToken] Partition partitionToken
-                     */
-    
-                    /**
-                     * Constructs a new Partition.
-                     * @memberof google.spanner.v1
-                     * @classdesc Represents a Partition.
-                     * @implements IPartition
-                     * @constructor
-                     * @param {google.spanner.v1.IPartition=} [properties] Properties to set
-                     */
-                    function Partition(properties) {
-                        if (properties)
-                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
-                                if (properties[keys[i]] != null)
-                                    this[keys[i]] = properties[keys[i]];
-                    }
-    
-                    /**
-                     * Partition partitionToken.
-                     * @member {Uint8Array} partitionToken
-                     * @memberof google.spanner.v1.Partition
-                     * @instance
-                     */
-                    Partition.prototype.partitionToken = $util.newBuffer([]);
-    
-                    /**
-                     * Creates a new Partition instance using the specified properties.
-                     * @function create
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {google.spanner.v1.IPartition=} [properties] Properties to set
-                     * @returns {google.spanner.v1.Partition} Partition instance
-                     */
-                    Partition.create = function create(properties) {
-                        return new Partition(properties);
-                    };
-    
-                    /**
-                     * Encodes the specified Partition message. Does not implicitly {@link google.spanner.v1.Partition.verify|verify} messages.
-                     * @function encode
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {google.spanner.v1.IPartition} message Partition message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
-                     */
-                    Partition.encode = function encode(message, writer) {
-                        if (!writer)
-                            writer = $Writer.create();
-                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
-                            writer.uint32(/* id 1, wireType 2 =*/10).bytes(message.partitionToken);
-                        return writer;
-                    };
-    
-                    /**
-                     * Encodes the specified Partition message, length delimited. Does not implicitly {@link google.spanner.v1.Partition.verify|verify} messages.
-                     * @function encodeDelimited
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {google.spanner.v1.IPartition} message Partition message or plain object to encode
-                     * @param {$protobuf.Writer} [writer] Writer to encode to
-                     * @returns {$protobuf.Writer} Writer
-                     */
-                    Partition.encodeDelimited = function encodeDelimited(message, writer) {
-                        return this.encode(message, writer).ldelim();
-                    };
-    
-                    /**
-                     * Decodes a Partition message from the specified reader or buffer.
-                     * @function decode
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.Partition} Partition
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
-                     */
-                    Partition.decode = function decode(reader, length) {
-                        if (!(reader instanceof $Reader))
-                            reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.Partition();
-                        while (reader.pos < end) {
-                            var tag = reader.uint32();
-                            switch (tag >>> 3) {
-                            case 1: {
-                                    message.partitionToken = reader.bytes();
-                                    break;
-                                }
-                            default:
-                                reader.skipType(tag & 7);
-                                break;
-                            }
-                        }
-                        return message;
-                    };
-    
-                    /**
-                     * Decodes a Partition message from the specified reader or buffer, length delimited.
-                     * @function decodeDelimited
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.Partition} Partition
-                     * @throws {Error} If the payload is not a reader or valid buffer
-                     * @throws {$protobuf.util.ProtocolError} If required fields are missing
-                     */
-                    Partition.decodeDelimited = function decodeDelimited(reader) {
-                        if (!(reader instanceof $Reader))
-                            reader = new $Reader(reader);
-                        return this.decode(reader, reader.uint32());
-                    };
-    
-                    /**
-                     * Verifies a Partition message.
-                     * @function verify
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {Object.<string,*>} message Plain object to verify
-                     * @returns {string|null} `null` if valid, otherwise the reason why it is not
-                     */
-                    Partition.verify = function verify(message) {
-                        if (typeof message !== "object" || message === null)
-                            return "object expected";
-                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
-                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
-                                return "partitionToken: buffer expected";
-                        return null;
-                    };
-    
-                    /**
-                     * Creates a Partition message from a plain object. Also converts values to their respective internal types.
-                     * @function fromObject
-                     * @memberof google.spanner.v1.Partition
-                     * @static
-                     * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.Partition} Partition
-                     */
-                    Partition.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.Partition)
-                            return object;
-                        var message = new $root.google.spanner.v1.Partition();
+                        if (object.limit != null)
+                            if ($util.Long)
+                                (message.limit = $util.Long.fromValue(object.limit)).unsigned = false;
+                            else if (typeof object.limit === "string")
+                                message.limit = parseInt(object.limit, 10);
+                            else if (typeof object.limit === "number")
+                                message.limit = object.limit;
+                            else if (typeof object.limit === "object")
+                                message.limit = new $util.LongBits(object.limit.low >>> 0, object.limit.high >>> 0).toNumber();
+                        if (object.resumeToken != null)
+                            if (typeof object.resumeToken === "string")
+                                $util.base64.decode(object.resumeToken, message.resumeToken = $util.newBuffer($util.base64.length(object.resumeToken)), 0);
+                            else if (object.resumeToken.length >= 0)
+                                message.resumeToken = object.resumeToken;
                         if (object.partitionToken != null)
                             if (typeof object.partitionToken === "string")
                                 $util.base64.decode(object.partitionToken, message.partitionToken = $util.newBuffer($util.base64.length(object.partitionToken)), 0);
                             else if (object.partitionToken.length >= 0)
                                 message.partitionToken = object.partitionToken;
+                        if (object.requestOptions != null) {
+                            if (typeof object.requestOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ReadRequest.requestOptions: object expected");
+                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
+                        }
+                        if (object.directedReadOptions != null) {
+                            if (typeof object.directedReadOptions !== "object")
+                                throw TypeError(".google.spanner.v1.ReadRequest.directedReadOptions: object expected");
+                            message.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.fromObject(object.directedReadOptions);
+                        }
+                        if (object.dataBoostEnabled != null)
+                            message.dataBoostEnabled = Boolean(object.dataBoostEnabled);
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a Partition message. Also converts values to other types if specified.
+                     * Creates a plain object from a ReadRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.Partition
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
-                     * @param {google.spanner.v1.Partition} message Partition
+                     * @param {google.spanner.v1.ReadRequest} message ReadRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    Partition.toObject = function toObject(message, options) {
+                    ReadRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
-                        if (options.defaults)
+                        if (options.arrays || options.defaults)
+                            object.columns = [];
+                        if (options.defaults) {
+                            object.session = "";
+                            object.transaction = null;
+                            object.table = "";
+                            object.index = "";
+                            object.keySet = null;
+                            if ($util.Long) {
+                                var long = new $util.Long(0, 0, false);
+                                object.limit = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
+                            } else
+                                object.limit = options.longs === String ? "0" : 0;
+                            if (options.bytes === String)
+                                object.resumeToken = "";
+                            else {
+                                object.resumeToken = [];
+                                if (options.bytes !== Array)
+                                    object.resumeToken = $util.newBuffer(object.resumeToken);
+                            }
                             if (options.bytes === String)
                                 object.partitionToken = "";
                             else {
@@ -46940,60 +51134,92 @@
                                 if (options.bytes !== Array)
                                     object.partitionToken = $util.newBuffer(object.partitionToken);
                             }
+                            object.requestOptions = null;
+                            object.directedReadOptions = null;
+                            object.dataBoostEnabled = false;
+                        }
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.transaction != null && message.hasOwnProperty("transaction"))
+                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
+                        if (message.table != null && message.hasOwnProperty("table"))
+                            object.table = message.table;
+                        if (message.index != null && message.hasOwnProperty("index"))
+                            object.index = message.index;
+                        if (message.columns && message.columns.length) {
+                            object.columns = [];
+                            for (var j = 0; j < message.columns.length; ++j)
+                                object.columns[j] = message.columns[j];
+                        }
+                        if (message.keySet != null && message.hasOwnProperty("keySet"))
+                            object.keySet = $root.google.spanner.v1.KeySet.toObject(message.keySet, options);
+                        if (message.limit != null && message.hasOwnProperty("limit"))
+                            if (typeof message.limit === "number")
+                                object.limit = options.longs === String ? String(message.limit) : message.limit;
+                            else
+                                object.limit = options.longs === String ? $util.Long.prototype.toString.call(message.limit) : options.longs === Number ? new $util.LongBits(message.limit.low >>> 0, message.limit.high >>> 0).toNumber() : message.limit;
+                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
+                            object.resumeToken = options.bytes === String ? $util.base64.encode(message.resumeToken, 0, message.resumeToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.resumeToken) : message.resumeToken;
                         if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
                             object.partitionToken = options.bytes === String ? $util.base64.encode(message.partitionToken, 0, message.partitionToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.partitionToken) : message.partitionToken;
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
+                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
+                        if (message.directedReadOptions != null && message.hasOwnProperty("directedReadOptions"))
+                            object.directedReadOptions = $root.google.spanner.v1.DirectedReadOptions.toObject(message.directedReadOptions, options);
+                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
+                            object.dataBoostEnabled = message.dataBoostEnabled;
                         return object;
                     };
     
                     /**
-                     * Converts this Partition to JSON.
+                     * Converts this ReadRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.Partition
+                     * @memberof google.spanner.v1.ReadRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    Partition.prototype.toJSON = function toJSON() {
+                    ReadRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for Partition
+                     * Gets the default type url for ReadRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.Partition
+                     * @memberof google.spanner.v1.ReadRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    Partition.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    ReadRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.Partition";
+                        return typeUrlPrefix + "/google.spanner.v1.ReadRequest";
                     };
     
-                    return Partition;
+                    return ReadRequest;
                 })();
     
-                v1.PartitionResponse = (function() {
+                v1.BeginTransactionRequest = (function() {
     
                     /**
-                     * Properties of a PartitionResponse.
+                     * Properties of a BeginTransactionRequest.
                      * @memberof google.spanner.v1
-                     * @interface IPartitionResponse
-                     * @property {Array.<google.spanner.v1.IPartition>|null} [partitions] PartitionResponse partitions
-                     * @property {google.spanner.v1.ITransaction|null} [transaction] PartitionResponse transaction
+                     * @interface IBeginTransactionRequest
+                     * @property {string|null} [session] BeginTransactionRequest session
+                     * @property {google.spanner.v1.ITransactionOptions|null} [options] BeginTransactionRequest options
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] BeginTransactionRequest requestOptions
                      */
     
                     /**
-                     * Constructs a new PartitionResponse.
+                     * Constructs a new BeginTransactionRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a PartitionResponse.
-                     * @implements IPartitionResponse
+                     * @classdesc Represents a BeginTransactionRequest.
+                     * @implements IBeginTransactionRequest
                      * @constructor
-                     * @param {google.spanner.v1.IPartitionResponse=} [properties] Properties to set
+                     * @param {google.spanner.v1.IBeginTransactionRequest=} [properties] Properties to set
                      */
-                    function PartitionResponse(properties) {
-                        this.partitions = [];
+                    function BeginTransactionRequest(properties) {
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -47001,92 +51227,103 @@
                     }
     
                     /**
-                     * PartitionResponse partitions.
-                     * @member {Array.<google.spanner.v1.IPartition>} partitions
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * BeginTransactionRequest session.
+                     * @member {string} session
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @instance
                      */
-                    PartitionResponse.prototype.partitions = $util.emptyArray;
+                    BeginTransactionRequest.prototype.session = "";
     
                     /**
-                     * PartitionResponse transaction.
-                     * @member {google.spanner.v1.ITransaction|null|undefined} transaction
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * BeginTransactionRequest options.
+                     * @member {google.spanner.v1.ITransactionOptions|null|undefined} options
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @instance
                      */
-                    PartitionResponse.prototype.transaction = null;
+                    BeginTransactionRequest.prototype.options = null;
     
                     /**
-                     * Creates a new PartitionResponse instance using the specified properties.
+                     * BeginTransactionRequest requestOptions.
+                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
+                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @instance
+                     */
+                    BeginTransactionRequest.prototype.requestOptions = null;
+    
+                    /**
+                     * Creates a new BeginTransactionRequest instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionResponse=} [properties] Properties to set
-                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse instance
+                     * @param {google.spanner.v1.IBeginTransactionRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest instance
                      */
-                    PartitionResponse.create = function create(properties) {
-                        return new PartitionResponse(properties);
+                    BeginTransactionRequest.create = function create(properties) {
+                        return new BeginTransactionRequest(properties);
                     };
     
                     /**
-                     * Encodes the specified PartitionResponse message. Does not implicitly {@link google.spanner.v1.PartitionResponse.verify|verify} messages.
+                     * Encodes the specified BeginTransactionRequest message. Does not implicitly {@link google.spanner.v1.BeginTransactionRequest.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionResponse} message PartitionResponse message or plain object to encode
+                     * @param {google.spanner.v1.IBeginTransactionRequest} message BeginTransactionRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionResponse.encode = function encode(message, writer) {
+                    BeginTransactionRequest.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
-                        if (message.partitions != null && message.partitions.length)
-                            for (var i = 0; i < message.partitions.length; ++i)
-                                $root.google.spanner.v1.Partition.encode(message.partitions[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
-                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
-                            $root.google.spanner.v1.Transaction.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
+                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
+                        if (message.options != null && Object.hasOwnProperty.call(message, "options"))
+                            $root.google.spanner.v1.TransactionOptions.encode(message.options, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified PartitionResponse message, length delimited. Does not implicitly {@link google.spanner.v1.PartitionResponse.verify|verify} messages.
+                     * Encodes the specified BeginTransactionRequest message, length delimited. Does not implicitly {@link google.spanner.v1.BeginTransactionRequest.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
-                     * @param {google.spanner.v1.IPartitionResponse} message PartitionResponse message or plain object to encode
+                     * @param {google.spanner.v1.IBeginTransactionRequest} message BeginTransactionRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    PartitionResponse.encodeDelimited = function encodeDelimited(message, writer) {
+                    BeginTransactionRequest.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a PartitionResponse message from the specified reader or buffer.
+                     * Decodes a BeginTransactionRequest message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
+                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionResponse.decode = function decode(reader, length) {
+                    BeginTransactionRequest.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.PartitionResponse();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.BeginTransactionRequest();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
                             case 1: {
-                                    if (!(message.partitions && message.partitions.length))
-                                        message.partitions = [];
-                                    message.partitions.push($root.google.spanner.v1.Partition.decode(reader, reader.uint32()));
+                                    message.session = reader.string();
                                     break;
                                 }
                             case 2: {
-                                    message.transaction = $root.google.spanner.v1.Transaction.decode(reader, reader.uint32());
+                                    message.options = $root.google.spanner.v1.TransactionOptions.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
                                     break;
                                 }
                             default:
@@ -47098,164 +51335,155 @@
                     };
     
                     /**
-                     * Decodes a PartitionResponse message from the specified reader or buffer, length delimited.
+                     * Decodes a BeginTransactionRequest message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
+                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    PartitionResponse.decodeDelimited = function decodeDelimited(reader) {
+                    BeginTransactionRequest.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a PartitionResponse message.
+                     * Verifies a BeginTransactionRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    PartitionResponse.verify = function verify(message) {
+                    BeginTransactionRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.partitions != null && message.hasOwnProperty("partitions")) {
-                            if (!Array.isArray(message.partitions))
-                                return "partitions: array expected";
-                            for (var i = 0; i < message.partitions.length; ++i) {
-                                var error = $root.google.spanner.v1.Partition.verify(message.partitions[i]);
-                                if (error)
-                                    return "partitions." + error;
-                            }
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            if (!$util.isString(message.session))
+                                return "session: string expected";
+                        if (message.options != null && message.hasOwnProperty("options")) {
+                            var error = $root.google.spanner.v1.TransactionOptions.verify(message.options);
+                            if (error)
+                                return "options." + error;
                         }
-                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
-                            var error = $root.google.spanner.v1.Transaction.verify(message.transaction);
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
+                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
                             if (error)
-                                return "transaction." + error;
+                                return "requestOptions." + error;
                         }
                         return null;
                     };
     
                     /**
-                     * Creates a PartitionResponse message from a plain object. Also converts values to their respective internal types.
+                     * Creates a BeginTransactionRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.PartitionResponse} PartitionResponse
+                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
                      */
-                    PartitionResponse.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.PartitionResponse)
+                    BeginTransactionRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.BeginTransactionRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.PartitionResponse();
-                        if (object.partitions) {
-                            if (!Array.isArray(object.partitions))
-                                throw TypeError(".google.spanner.v1.PartitionResponse.partitions: array expected");
-                            message.partitions = [];
-                            for (var i = 0; i < object.partitions.length; ++i) {
-                                if (typeof object.partitions[i] !== "object")
-                                    throw TypeError(".google.spanner.v1.PartitionResponse.partitions: object expected");
-                                message.partitions[i] = $root.google.spanner.v1.Partition.fromObject(object.partitions[i]);
-                            }
+                        var message = new $root.google.spanner.v1.BeginTransactionRequest();
+                        if (object.session != null)
+                            message.session = String(object.session);
+                        if (object.options != null) {
+                            if (typeof object.options !== "object")
+                                throw TypeError(".google.spanner.v1.BeginTransactionRequest.options: object expected");
+                            message.options = $root.google.spanner.v1.TransactionOptions.fromObject(object.options);
                         }
-                        if (object.transaction != null) {
-                            if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.PartitionResponse.transaction: object expected");
-                            message.transaction = $root.google.spanner.v1.Transaction.fromObject(object.transaction);
+                        if (object.requestOptions != null) {
+                            if (typeof object.requestOptions !== "object")
+                                throw TypeError(".google.spanner.v1.BeginTransactionRequest.requestOptions: object expected");
+                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
                         }
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a PartitionResponse message. Also converts values to other types if specified.
+                     * Creates a plain object from a BeginTransactionRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
-                     * @param {google.spanner.v1.PartitionResponse} message PartitionResponse
+                     * @param {google.spanner.v1.BeginTransactionRequest} message BeginTransactionRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    PartitionResponse.toObject = function toObject(message, options) {
+                    BeginTransactionRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
-                        if (options.arrays || options.defaults)
-                            object.partitions = [];
-                        if (options.defaults)
-                            object.transaction = null;
-                        if (message.partitions && message.partitions.length) {
-                            object.partitions = [];
-                            for (var j = 0; j < message.partitions.length; ++j)
-                                object.partitions[j] = $root.google.spanner.v1.Partition.toObject(message.partitions[j], options);
+                        if (options.defaults) {
+                            object.session = "";
+                            object.options = null;
+                            object.requestOptions = null;
                         }
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.Transaction.toObject(message.transaction, options);
+                        if (message.session != null && message.hasOwnProperty("session"))
+                            object.session = message.session;
+                        if (message.options != null && message.hasOwnProperty("options"))
+                            object.options = $root.google.spanner.v1.TransactionOptions.toObject(message.options, options);
+                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
+                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
                         return object;
                     };
     
                     /**
-                     * Converts this PartitionResponse to JSON.
+                     * Converts this BeginTransactionRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    PartitionResponse.prototype.toJSON = function toJSON() {
+                    BeginTransactionRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for PartitionResponse
+                     * Gets the default type url for BeginTransactionRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.PartitionResponse
+                     * @memberof google.spanner.v1.BeginTransactionRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    PartitionResponse.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    BeginTransactionRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.PartitionResponse";
+                        return typeUrlPrefix + "/google.spanner.v1.BeginTransactionRequest";
                     };
     
-                    return PartitionResponse;
+                    return BeginTransactionRequest;
                 })();
     
-                v1.ReadRequest = (function() {
+                v1.CommitRequest = (function() {
     
                     /**
-                     * Properties of a ReadRequest.
+                     * Properties of a CommitRequest.
                      * @memberof google.spanner.v1
-                     * @interface IReadRequest
-                     * @property {string|null} [session] ReadRequest session
-                     * @property {google.spanner.v1.ITransactionSelector|null} [transaction] ReadRequest transaction
-                     * @property {string|null} [table] ReadRequest table
-                     * @property {string|null} [index] ReadRequest index
-                     * @property {Array.<string>|null} [columns] ReadRequest columns
-                     * @property {google.spanner.v1.IKeySet|null} [keySet] ReadRequest keySet
-                     * @property {number|Long|null} [limit] ReadRequest limit
-                     * @property {Uint8Array|null} [resumeToken] ReadRequest resumeToken
-                     * @property {Uint8Array|null} [partitionToken] ReadRequest partitionToken
-                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] ReadRequest requestOptions
-                     * @property {boolean|null} [dataBoostEnabled] ReadRequest dataBoostEnabled
+                     * @interface ICommitRequest
+                     * @property {string|null} [session] CommitRequest session
+                     * @property {Uint8Array|null} [transactionId] CommitRequest transactionId
+                     * @property {google.spanner.v1.ITransactionOptions|null} [singleUseTransaction] CommitRequest singleUseTransaction
+                     * @property {Array.<google.spanner.v1.IMutation>|null} [mutations] CommitRequest mutations
+                     * @property {boolean|null} [returnCommitStats] CommitRequest returnCommitStats
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] CommitRequest requestOptions
                      */
     
                     /**
-                     * Constructs a new ReadRequest.
+                     * Constructs a new CommitRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a ReadRequest.
-                     * @implements IReadRequest
+                     * @classdesc Represents a CommitRequest.
+                     * @implements ICommitRequest
                      * @constructor
-                     * @param {google.spanner.v1.IReadRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.ICommitRequest=} [properties] Properties to set
                      */
-                    function ReadRequest(properties) {
-                        this.columns = [];
+                    function CommitRequest(properties) {
+                        this.mutations = [];
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -47263,171 +51491,135 @@
                     }
     
                     /**
-                     * ReadRequest session.
+                     * CommitRequest session.
                      * @member {string} session
-                     * @memberof google.spanner.v1.ReadRequest
-                     * @instance
-                     */
-                    ReadRequest.prototype.session = "";
-    
-                    /**
-                     * ReadRequest transaction.
-                     * @member {google.spanner.v1.ITransactionSelector|null|undefined} transaction
-                     * @memberof google.spanner.v1.ReadRequest
-                     * @instance
-                     */
-                    ReadRequest.prototype.transaction = null;
-    
-                    /**
-                     * ReadRequest table.
-                     * @member {string} table
-                     * @memberof google.spanner.v1.ReadRequest
-                     * @instance
-                     */
-                    ReadRequest.prototype.table = "";
-    
-                    /**
-                     * ReadRequest index.
-                     * @member {string} index
-                     * @memberof google.spanner.v1.ReadRequest
-                     * @instance
-                     */
-                    ReadRequest.prototype.index = "";
-    
-                    /**
-                     * ReadRequest columns.
-                     * @member {Array.<string>} columns
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.columns = $util.emptyArray;
+                    CommitRequest.prototype.session = "";
     
                     /**
-                     * ReadRequest keySet.
-                     * @member {google.spanner.v1.IKeySet|null|undefined} keySet
-                     * @memberof google.spanner.v1.ReadRequest
+                     * CommitRequest transactionId.
+                     * @member {Uint8Array|null|undefined} transactionId
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.keySet = null;
+                    CommitRequest.prototype.transactionId = null;
     
                     /**
-                     * ReadRequest limit.
-                     * @member {number|Long} limit
-                     * @memberof google.spanner.v1.ReadRequest
+                     * CommitRequest singleUseTransaction.
+                     * @member {google.spanner.v1.ITransactionOptions|null|undefined} singleUseTransaction
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.limit = $util.Long ? $util.Long.fromBits(0,0,false) : 0;
+                    CommitRequest.prototype.singleUseTransaction = null;
     
                     /**
-                     * ReadRequest resumeToken.
-                     * @member {Uint8Array} resumeToken
-                     * @memberof google.spanner.v1.ReadRequest
+                     * CommitRequest mutations.
+                     * @member {Array.<google.spanner.v1.IMutation>} mutations
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.resumeToken = $util.newBuffer([]);
+                    CommitRequest.prototype.mutations = $util.emptyArray;
     
                     /**
-                     * ReadRequest partitionToken.
-                     * @member {Uint8Array} partitionToken
-                     * @memberof google.spanner.v1.ReadRequest
+                     * CommitRequest returnCommitStats.
+                     * @member {boolean} returnCommitStats
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.partitionToken = $util.newBuffer([]);
+                    CommitRequest.prototype.returnCommitStats = false;
     
                     /**
-                     * ReadRequest requestOptions.
+                     * CommitRequest requestOptions.
                      * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.requestOptions = null;
+                    CommitRequest.prototype.requestOptions = null;
+    
+                    // OneOf field names bound to virtual getters and setters
+                    var $oneOfFields;
     
                     /**
-                     * ReadRequest dataBoostEnabled.
-                     * @member {boolean} dataBoostEnabled
-                     * @memberof google.spanner.v1.ReadRequest
+                     * CommitRequest transaction.
+                     * @member {"transactionId"|"singleUseTransaction"|undefined} transaction
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      */
-                    ReadRequest.prototype.dataBoostEnabled = false;
+                    Object.defineProperty(CommitRequest.prototype, "transaction", {
+                        get: $util.oneOfGetter($oneOfFields = ["transactionId", "singleUseTransaction"]),
+                        set: $util.oneOfSetter($oneOfFields)
+                    });
     
                     /**
-                     * Creates a new ReadRequest instance using the specified properties.
+                     * Creates a new CommitRequest instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
-                     * @param {google.spanner.v1.IReadRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.ReadRequest} ReadRequest instance
+                     * @param {google.spanner.v1.ICommitRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.CommitRequest} CommitRequest instance
                      */
-                    ReadRequest.create = function create(properties) {
-                        return new ReadRequest(properties);
+                    CommitRequest.create = function create(properties) {
+                        return new CommitRequest(properties);
                     };
     
                     /**
-                     * Encodes the specified ReadRequest message. Does not implicitly {@link google.spanner.v1.ReadRequest.verify|verify} messages.
+                     * Encodes the specified CommitRequest message. Does not implicitly {@link google.spanner.v1.CommitRequest.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
-                     * @param {google.spanner.v1.IReadRequest} message ReadRequest message or plain object to encode
+                     * @param {google.spanner.v1.ICommitRequest} message CommitRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    ReadRequest.encode = function encode(message, writer) {
+                    CommitRequest.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
                         if (message.session != null && Object.hasOwnProperty.call(message, "session"))
                             writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.transaction != null && Object.hasOwnProperty.call(message, "transaction"))
-                            $root.google.spanner.v1.TransactionSelector.encode(message.transaction, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        if (message.table != null && Object.hasOwnProperty.call(message, "table"))
-                            writer.uint32(/* id 3, wireType 2 =*/26).string(message.table);
-                        if (message.index != null && Object.hasOwnProperty.call(message, "index"))
-                            writer.uint32(/* id 4, wireType 2 =*/34).string(message.index);
-                        if (message.columns != null && message.columns.length)
-                            for (var i = 0; i < message.columns.length; ++i)
-                                writer.uint32(/* id 5, wireType 2 =*/42).string(message.columns[i]);
-                        if (message.keySet != null && Object.hasOwnProperty.call(message, "keySet"))
-                            $root.google.spanner.v1.KeySet.encode(message.keySet, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
-                        if (message.limit != null && Object.hasOwnProperty.call(message, "limit"))
-                            writer.uint32(/* id 8, wireType 0 =*/64).int64(message.limit);
-                        if (message.resumeToken != null && Object.hasOwnProperty.call(message, "resumeToken"))
-                            writer.uint32(/* id 9, wireType 2 =*/74).bytes(message.resumeToken);
-                        if (message.partitionToken != null && Object.hasOwnProperty.call(message, "partitionToken"))
-                            writer.uint32(/* id 10, wireType 2 =*/82).bytes(message.partitionToken);
+                        if (message.transactionId != null && Object.hasOwnProperty.call(message, "transactionId"))
+                            writer.uint32(/* id 2, wireType 2 =*/18).bytes(message.transactionId);
+                        if (message.singleUseTransaction != null && Object.hasOwnProperty.call(message, "singleUseTransaction"))
+                            $root.google.spanner.v1.TransactionOptions.encode(message.singleUseTransaction, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
+                        if (message.mutations != null && message.mutations.length)
+                            for (var i = 0; i < message.mutations.length; ++i)
+                                $root.google.spanner.v1.Mutation.encode(message.mutations[i], writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
+                        if (message.returnCommitStats != null && Object.hasOwnProperty.call(message, "returnCommitStats"))
+                            writer.uint32(/* id 5, wireType 0 =*/40).bool(message.returnCommitStats);
                         if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
-                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 11, wireType 2 =*/90).fork()).ldelim();
-                        if (message.dataBoostEnabled != null && Object.hasOwnProperty.call(message, "dataBoostEnabled"))
-                            writer.uint32(/* id 15, wireType 0 =*/120).bool(message.dataBoostEnabled);
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified ReadRequest message, length delimited. Does not implicitly {@link google.spanner.v1.ReadRequest.verify|verify} messages.
+                     * Encodes the specified CommitRequest message, length delimited. Does not implicitly {@link google.spanner.v1.CommitRequest.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
-                     * @param {google.spanner.v1.IReadRequest} message ReadRequest message or plain object to encode
+                     * @param {google.spanner.v1.ICommitRequest} message CommitRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    ReadRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    CommitRequest.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a ReadRequest message from the specified reader or buffer.
+                     * Decodes a CommitRequest message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
+                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    ReadRequest.decode = function decode(reader, length) {
+                    CommitRequest.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.ReadRequest();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.CommitRequest();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
@@ -47436,47 +51628,27 @@
                                     break;
                                 }
                             case 2: {
-                                    message.transaction = $root.google.spanner.v1.TransactionSelector.decode(reader, reader.uint32());
+                                    message.transactionId = reader.bytes();
                                     break;
                                 }
                             case 3: {
-                                    message.table = reader.string();
+                                    message.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.decode(reader, reader.uint32());
                                     break;
                                 }
                             case 4: {
-                                    message.index = reader.string();
+                                    if (!(message.mutations && message.mutations.length))
+                                        message.mutations = [];
+                                    message.mutations.push($root.google.spanner.v1.Mutation.decode(reader, reader.uint32()));
                                     break;
                                 }
                             case 5: {
-                                    if (!(message.columns && message.columns.length))
-                                        message.columns = [];
-                                    message.columns.push(reader.string());
-                                    break;
-                                }
-                            case 6: {
-                                    message.keySet = $root.google.spanner.v1.KeySet.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 8: {
-                                    message.limit = reader.int64();
-                                    break;
-                                }
-                            case 9: {
-                                    message.resumeToken = reader.bytes();
-                                    break;
-                                }
-                            case 10: {
-                                    message.partitionToken = reader.bytes();
+                                    message.returnCommitStats = reader.bool();
                                     break;
                                 }
-                            case 11: {
+                            case 6: {
                                     message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
                                     break;
                                 }
-                            case 15: {
-                                    message.dataBoostEnabled = reader.bool();
-                                    break;
-                                }
                             default:
                                 reader.skipType(tag & 7);
                                 break;
@@ -47486,265 +51658,207 @@
                     };
     
                     /**
-                     * Decodes a ReadRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a CommitRequest message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
+                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    ReadRequest.decodeDelimited = function decodeDelimited(reader) {
+                    CommitRequest.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a ReadRequest message.
+                     * Verifies a CommitRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    ReadRequest.verify = function verify(message) {
+                    CommitRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
+                        var properties = {};
                         if (message.session != null && message.hasOwnProperty("session"))
                             if (!$util.isString(message.session))
                                 return "session: string expected";
-                        if (message.transaction != null && message.hasOwnProperty("transaction")) {
-                            var error = $root.google.spanner.v1.TransactionSelector.verify(message.transaction);
-                            if (error)
-                                return "transaction." + error;
+                        if (message.transactionId != null && message.hasOwnProperty("transactionId")) {
+                            properties.transaction = 1;
+                            if (!(message.transactionId && typeof message.transactionId.length === "number" || $util.isString(message.transactionId)))
+                                return "transactionId: buffer expected";
                         }
-                        if (message.table != null && message.hasOwnProperty("table"))
-                            if (!$util.isString(message.table))
-                                return "table: string expected";
-                        if (message.index != null && message.hasOwnProperty("index"))
-                            if (!$util.isString(message.index))
-                                return "index: string expected";
-                        if (message.columns != null && message.hasOwnProperty("columns")) {
-                            if (!Array.isArray(message.columns))
-                                return "columns: array expected";
-                            for (var i = 0; i < message.columns.length; ++i)
-                                if (!$util.isString(message.columns[i]))
-                                    return "columns: string[] expected";
+                        if (message.singleUseTransaction != null && message.hasOwnProperty("singleUseTransaction")) {
+                            if (properties.transaction === 1)
+                                return "transaction: multiple values";
+                            properties.transaction = 1;
+                            {
+                                var error = $root.google.spanner.v1.TransactionOptions.verify(message.singleUseTransaction);
+                                if (error)
+                                    return "singleUseTransaction." + error;
+                            }
                         }
-                        if (message.keySet != null && message.hasOwnProperty("keySet")) {
-                            var error = $root.google.spanner.v1.KeySet.verify(message.keySet);
-                            if (error)
-                                return "keySet." + error;
+                        if (message.mutations != null && message.hasOwnProperty("mutations")) {
+                            if (!Array.isArray(message.mutations))
+                                return "mutations: array expected";
+                            for (var i = 0; i < message.mutations.length; ++i) {
+                                var error = $root.google.spanner.v1.Mutation.verify(message.mutations[i]);
+                                if (error)
+                                    return "mutations." + error;
+                            }
                         }
-                        if (message.limit != null && message.hasOwnProperty("limit"))
-                            if (!$util.isInteger(message.limit) && !(message.limit && $util.isInteger(message.limit.low) && $util.isInteger(message.limit.high)))
-                                return "limit: integer|Long expected";
-                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
-                            if (!(message.resumeToken && typeof message.resumeToken.length === "number" || $util.isString(message.resumeToken)))
-                                return "resumeToken: buffer expected";
-                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
-                            if (!(message.partitionToken && typeof message.partitionToken.length === "number" || $util.isString(message.partitionToken)))
-                                return "partitionToken: buffer expected";
+                        if (message.returnCommitStats != null && message.hasOwnProperty("returnCommitStats"))
+                            if (typeof message.returnCommitStats !== "boolean")
+                                return "returnCommitStats: boolean expected";
                         if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
                             var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
                             if (error)
                                 return "requestOptions." + error;
                         }
-                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
-                            if (typeof message.dataBoostEnabled !== "boolean")
-                                return "dataBoostEnabled: boolean expected";
                         return null;
                     };
     
                     /**
-                     * Creates a ReadRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a CommitRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.ReadRequest} ReadRequest
+                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
                      */
-                    ReadRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.ReadRequest)
+                    CommitRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.CommitRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.ReadRequest();
+                        var message = new $root.google.spanner.v1.CommitRequest();
                         if (object.session != null)
                             message.session = String(object.session);
-                        if (object.transaction != null) {
-                            if (typeof object.transaction !== "object")
-                                throw TypeError(".google.spanner.v1.ReadRequest.transaction: object expected");
-                            message.transaction = $root.google.spanner.v1.TransactionSelector.fromObject(object.transaction);
-                        }
-                        if (object.table != null)
-                            message.table = String(object.table);
-                        if (object.index != null)
-                            message.index = String(object.index);
-                        if (object.columns) {
-                            if (!Array.isArray(object.columns))
-                                throw TypeError(".google.spanner.v1.ReadRequest.columns: array expected");
-                            message.columns = [];
-                            for (var i = 0; i < object.columns.length; ++i)
-                                message.columns[i] = String(object.columns[i]);
+                        if (object.transactionId != null)
+                            if (typeof object.transactionId === "string")
+                                $util.base64.decode(object.transactionId, message.transactionId = $util.newBuffer($util.base64.length(object.transactionId)), 0);
+                            else if (object.transactionId.length >= 0)
+                                message.transactionId = object.transactionId;
+                        if (object.singleUseTransaction != null) {
+                            if (typeof object.singleUseTransaction !== "object")
+                                throw TypeError(".google.spanner.v1.CommitRequest.singleUseTransaction: object expected");
+                            message.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.fromObject(object.singleUseTransaction);
                         }
-                        if (object.keySet != null) {
-                            if (typeof object.keySet !== "object")
-                                throw TypeError(".google.spanner.v1.ReadRequest.keySet: object expected");
-                            message.keySet = $root.google.spanner.v1.KeySet.fromObject(object.keySet);
+                        if (object.mutations) {
+                            if (!Array.isArray(object.mutations))
+                                throw TypeError(".google.spanner.v1.CommitRequest.mutations: array expected");
+                            message.mutations = [];
+                            for (var i = 0; i < object.mutations.length; ++i) {
+                                if (typeof object.mutations[i] !== "object")
+                                    throw TypeError(".google.spanner.v1.CommitRequest.mutations: object expected");
+                                message.mutations[i] = $root.google.spanner.v1.Mutation.fromObject(object.mutations[i]);
+                            }
                         }
-                        if (object.limit != null)
-                            if ($util.Long)
-                                (message.limit = $util.Long.fromValue(object.limit)).unsigned = false;
-                            else if (typeof object.limit === "string")
-                                message.limit = parseInt(object.limit, 10);
-                            else if (typeof object.limit === "number")
-                                message.limit = object.limit;
-                            else if (typeof object.limit === "object")
-                                message.limit = new $util.LongBits(object.limit.low >>> 0, object.limit.high >>> 0).toNumber();
-                        if (object.resumeToken != null)
-                            if (typeof object.resumeToken === "string")
-                                $util.base64.decode(object.resumeToken, message.resumeToken = $util.newBuffer($util.base64.length(object.resumeToken)), 0);
-                            else if (object.resumeToken.length >= 0)
-                                message.resumeToken = object.resumeToken;
-                        if (object.partitionToken != null)
-                            if (typeof object.partitionToken === "string")
-                                $util.base64.decode(object.partitionToken, message.partitionToken = $util.newBuffer($util.base64.length(object.partitionToken)), 0);
-                            else if (object.partitionToken.length >= 0)
-                                message.partitionToken = object.partitionToken;
+                        if (object.returnCommitStats != null)
+                            message.returnCommitStats = Boolean(object.returnCommitStats);
                         if (object.requestOptions != null) {
                             if (typeof object.requestOptions !== "object")
-                                throw TypeError(".google.spanner.v1.ReadRequest.requestOptions: object expected");
+                                throw TypeError(".google.spanner.v1.CommitRequest.requestOptions: object expected");
                             message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
                         }
-                        if (object.dataBoostEnabled != null)
-                            message.dataBoostEnabled = Boolean(object.dataBoostEnabled);
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a ReadRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a CommitRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
-                     * @param {google.spanner.v1.ReadRequest} message ReadRequest
+                     * @param {google.spanner.v1.CommitRequest} message CommitRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    ReadRequest.toObject = function toObject(message, options) {
+                    CommitRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
                         if (options.arrays || options.defaults)
-                            object.columns = [];
+                            object.mutations = [];
                         if (options.defaults) {
                             object.session = "";
-                            object.transaction = null;
-                            object.table = "";
-                            object.index = "";
-                            object.keySet = null;
-                            if ($util.Long) {
-                                var long = new $util.Long(0, 0, false);
-                                object.limit = options.longs === String ? long.toString() : options.longs === Number ? long.toNumber() : long;
-                            } else
-                                object.limit = options.longs === String ? "0" : 0;
-                            if (options.bytes === String)
-                                object.resumeToken = "";
-                            else {
-                                object.resumeToken = [];
-                                if (options.bytes !== Array)
-                                    object.resumeToken = $util.newBuffer(object.resumeToken);
-                            }
-                            if (options.bytes === String)
-                                object.partitionToken = "";
-                            else {
-                                object.partitionToken = [];
-                                if (options.bytes !== Array)
-                                    object.partitionToken = $util.newBuffer(object.partitionToken);
-                            }
+                            object.returnCommitStats = false;
                             object.requestOptions = null;
-                            object.dataBoostEnabled = false;
                         }
                         if (message.session != null && message.hasOwnProperty("session"))
                             object.session = message.session;
-                        if (message.transaction != null && message.hasOwnProperty("transaction"))
-                            object.transaction = $root.google.spanner.v1.TransactionSelector.toObject(message.transaction, options);
-                        if (message.table != null && message.hasOwnProperty("table"))
-                            object.table = message.table;
-                        if (message.index != null && message.hasOwnProperty("index"))
-                            object.index = message.index;
-                        if (message.columns && message.columns.length) {
-                            object.columns = [];
-                            for (var j = 0; j < message.columns.length; ++j)
-                                object.columns[j] = message.columns[j];
+                        if (message.transactionId != null && message.hasOwnProperty("transactionId")) {
+                            object.transactionId = options.bytes === String ? $util.base64.encode(message.transactionId, 0, message.transactionId.length) : options.bytes === Array ? Array.prototype.slice.call(message.transactionId) : message.transactionId;
+                            if (options.oneofs)
+                                object.transaction = "transactionId";
                         }
-                        if (message.keySet != null && message.hasOwnProperty("keySet"))
-                            object.keySet = $root.google.spanner.v1.KeySet.toObject(message.keySet, options);
-                        if (message.limit != null && message.hasOwnProperty("limit"))
-                            if (typeof message.limit === "number")
-                                object.limit = options.longs === String ? String(message.limit) : message.limit;
-                            else
-                                object.limit = options.longs === String ? $util.Long.prototype.toString.call(message.limit) : options.longs === Number ? new $util.LongBits(message.limit.low >>> 0, message.limit.high >>> 0).toNumber() : message.limit;
-                        if (message.resumeToken != null && message.hasOwnProperty("resumeToken"))
-                            object.resumeToken = options.bytes === String ? $util.base64.encode(message.resumeToken, 0, message.resumeToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.resumeToken) : message.resumeToken;
-                        if (message.partitionToken != null && message.hasOwnProperty("partitionToken"))
-                            object.partitionToken = options.bytes === String ? $util.base64.encode(message.partitionToken, 0, message.partitionToken.length) : options.bytes === Array ? Array.prototype.slice.call(message.partitionToken) : message.partitionToken;
+                        if (message.singleUseTransaction != null && message.hasOwnProperty("singleUseTransaction")) {
+                            object.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.toObject(message.singleUseTransaction, options);
+                            if (options.oneofs)
+                                object.transaction = "singleUseTransaction";
+                        }
+                        if (message.mutations && message.mutations.length) {
+                            object.mutations = [];
+                            for (var j = 0; j < message.mutations.length; ++j)
+                                object.mutations[j] = $root.google.spanner.v1.Mutation.toObject(message.mutations[j], options);
+                        }
+                        if (message.returnCommitStats != null && message.hasOwnProperty("returnCommitStats"))
+                            object.returnCommitStats = message.returnCommitStats;
                         if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
                             object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
-                        if (message.dataBoostEnabled != null && message.hasOwnProperty("dataBoostEnabled"))
-                            object.dataBoostEnabled = message.dataBoostEnabled;
                         return object;
                     };
     
                     /**
-                     * Converts this ReadRequest to JSON.
+                     * Converts this CommitRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    ReadRequest.prototype.toJSON = function toJSON() {
+                    CommitRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for ReadRequest
+                     * Gets the default type url for CommitRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.ReadRequest
+                     * @memberof google.spanner.v1.CommitRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    ReadRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    CommitRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.ReadRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.CommitRequest";
                     };
     
-                    return ReadRequest;
+                    return CommitRequest;
                 })();
     
-                v1.BeginTransactionRequest = (function() {
+                v1.RollbackRequest = (function() {
     
                     /**
-                     * Properties of a BeginTransactionRequest.
+                     * Properties of a RollbackRequest.
                      * @memberof google.spanner.v1
-                     * @interface IBeginTransactionRequest
-                     * @property {string|null} [session] BeginTransactionRequest session
-                     * @property {google.spanner.v1.ITransactionOptions|null} [options] BeginTransactionRequest options
-                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] BeginTransactionRequest requestOptions
+                     * @interface IRollbackRequest
+                     * @property {string|null} [session] RollbackRequest session
+                     * @property {Uint8Array|null} [transactionId] RollbackRequest transactionId
                      */
     
                     /**
-                     * Constructs a new BeginTransactionRequest.
+                     * Constructs a new RollbackRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a BeginTransactionRequest.
-                     * @implements IBeginTransactionRequest
+                     * @classdesc Represents a RollbackRequest.
+                     * @implements IRollbackRequest
                      * @constructor
-                     * @param {google.spanner.v1.IBeginTransactionRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IRollbackRequest=} [properties] Properties to set
                      */
-                    function BeginTransactionRequest(properties) {
+                    function RollbackRequest(properties) {
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -47752,90 +51866,80 @@
                     }
     
                     /**
-                     * BeginTransactionRequest session.
+                     * RollbackRequest session.
                      * @member {string} session
-                     * @memberof google.spanner.v1.BeginTransactionRequest
-                     * @instance
-                     */
-                    BeginTransactionRequest.prototype.session = "";
-    
-                    /**
-                     * BeginTransactionRequest options.
-                     * @member {google.spanner.v1.ITransactionOptions|null|undefined} options
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @instance
                      */
-                    BeginTransactionRequest.prototype.options = null;
+                    RollbackRequest.prototype.session = "";
     
                     /**
-                     * BeginTransactionRequest requestOptions.
-                     * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * RollbackRequest transactionId.
+                     * @member {Uint8Array} transactionId
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @instance
                      */
-                    BeginTransactionRequest.prototype.requestOptions = null;
+                    RollbackRequest.prototype.transactionId = $util.newBuffer([]);
     
                     /**
-                     * Creates a new BeginTransactionRequest instance using the specified properties.
+                     * Creates a new RollbackRequest instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
-                     * @param {google.spanner.v1.IBeginTransactionRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest instance
+                     * @param {google.spanner.v1.IRollbackRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest instance
                      */
-                    BeginTransactionRequest.create = function create(properties) {
-                        return new BeginTransactionRequest(properties);
+                    RollbackRequest.create = function create(properties) {
+                        return new RollbackRequest(properties);
                     };
     
                     /**
-                     * Encodes the specified BeginTransactionRequest message. Does not implicitly {@link google.spanner.v1.BeginTransactionRequest.verify|verify} messages.
+                     * Encodes the specified RollbackRequest message. Does not implicitly {@link google.spanner.v1.RollbackRequest.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
-                     * @param {google.spanner.v1.IBeginTransactionRequest} message BeginTransactionRequest message or plain object to encode
+                     * @param {google.spanner.v1.IRollbackRequest} message RollbackRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    BeginTransactionRequest.encode = function encode(message, writer) {
+                    RollbackRequest.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
                         if (message.session != null && Object.hasOwnProperty.call(message, "session"))
                             writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.options != null && Object.hasOwnProperty.call(message, "options"))
-                            $root.google.spanner.v1.TransactionOptions.encode(message.options, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
-                        if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
-                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
+                        if (message.transactionId != null && Object.hasOwnProperty.call(message, "transactionId"))
+                            writer.uint32(/* id 2, wireType 2 =*/18).bytes(message.transactionId);
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified BeginTransactionRequest message, length delimited. Does not implicitly {@link google.spanner.v1.BeginTransactionRequest.verify|verify} messages.
+                     * Encodes the specified RollbackRequest message, length delimited. Does not implicitly {@link google.spanner.v1.RollbackRequest.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
-                     * @param {google.spanner.v1.IBeginTransactionRequest} message BeginTransactionRequest message or plain object to encode
+                     * @param {google.spanner.v1.IRollbackRequest} message RollbackRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    BeginTransactionRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    RollbackRequest.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a BeginTransactionRequest message from the specified reader or buffer.
+                     * Decodes a RollbackRequest message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
+                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    BeginTransactionRequest.decode = function decode(reader, length) {
+                    RollbackRequest.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.BeginTransactionRequest();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.RollbackRequest();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
@@ -47844,11 +51948,7 @@
                                     break;
                                 }
                             case 2: {
-                                    message.options = $root.google.spanner.v1.TransactionOptions.decode(reader, reader.uint32());
-                                    break;
-                                }
-                            case 3: {
-                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
+                                    message.transactionId = reader.bytes();
                                     break;
                                 }
                             default:
@@ -47860,155 +51960,143 @@
                     };
     
                     /**
-                     * Decodes a BeginTransactionRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a RollbackRequest message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
+                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    BeginTransactionRequest.decodeDelimited = function decodeDelimited(reader) {
+                    RollbackRequest.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a BeginTransactionRequest message.
+                     * Verifies a RollbackRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    BeginTransactionRequest.verify = function verify(message) {
+                    RollbackRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
                         if (message.session != null && message.hasOwnProperty("session"))
                             if (!$util.isString(message.session))
                                 return "session: string expected";
-                        if (message.options != null && message.hasOwnProperty("options")) {
-                            var error = $root.google.spanner.v1.TransactionOptions.verify(message.options);
-                            if (error)
-                                return "options." + error;
-                        }
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
-                            var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
-                            if (error)
-                                return "requestOptions." + error;
-                        }
+                        if (message.transactionId != null && message.hasOwnProperty("transactionId"))
+                            if (!(message.transactionId && typeof message.transactionId.length === "number" || $util.isString(message.transactionId)))
+                                return "transactionId: buffer expected";
                         return null;
                     };
     
                     /**
-                     * Creates a BeginTransactionRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a RollbackRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.BeginTransactionRequest} BeginTransactionRequest
+                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
                      */
-                    BeginTransactionRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.BeginTransactionRequest)
+                    RollbackRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.RollbackRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.BeginTransactionRequest();
+                        var message = new $root.google.spanner.v1.RollbackRequest();
                         if (object.session != null)
                             message.session = String(object.session);
-                        if (object.options != null) {
-                            if (typeof object.options !== "object")
-                                throw TypeError(".google.spanner.v1.BeginTransactionRequest.options: object expected");
-                            message.options = $root.google.spanner.v1.TransactionOptions.fromObject(object.options);
-                        }
-                        if (object.requestOptions != null) {
-                            if (typeof object.requestOptions !== "object")
-                                throw TypeError(".google.spanner.v1.BeginTransactionRequest.requestOptions: object expected");
-                            message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
-                        }
+                        if (object.transactionId != null)
+                            if (typeof object.transactionId === "string")
+                                $util.base64.decode(object.transactionId, message.transactionId = $util.newBuffer($util.base64.length(object.transactionId)), 0);
+                            else if (object.transactionId.length >= 0)
+                                message.transactionId = object.transactionId;
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a BeginTransactionRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a RollbackRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
-                     * @param {google.spanner.v1.BeginTransactionRequest} message BeginTransactionRequest
+                     * @param {google.spanner.v1.RollbackRequest} message RollbackRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    BeginTransactionRequest.toObject = function toObject(message, options) {
+                    RollbackRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
                         if (options.defaults) {
                             object.session = "";
-                            object.options = null;
-                            object.requestOptions = null;
+                            if (options.bytes === String)
+                                object.transactionId = "";
+                            else {
+                                object.transactionId = [];
+                                if (options.bytes !== Array)
+                                    object.transactionId = $util.newBuffer(object.transactionId);
+                            }
                         }
                         if (message.session != null && message.hasOwnProperty("session"))
                             object.session = message.session;
-                        if (message.options != null && message.hasOwnProperty("options"))
-                            object.options = $root.google.spanner.v1.TransactionOptions.toObject(message.options, options);
-                        if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
-                            object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
+                        if (message.transactionId != null && message.hasOwnProperty("transactionId"))
+                            object.transactionId = options.bytes === String ? $util.base64.encode(message.transactionId, 0, message.transactionId.length) : options.bytes === Array ? Array.prototype.slice.call(message.transactionId) : message.transactionId;
                         return object;
                     };
     
                     /**
-                     * Converts this BeginTransactionRequest to JSON.
+                     * Converts this RollbackRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    BeginTransactionRequest.prototype.toJSON = function toJSON() {
+                    RollbackRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for BeginTransactionRequest
+                     * Gets the default type url for RollbackRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.BeginTransactionRequest
+                     * @memberof google.spanner.v1.RollbackRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    BeginTransactionRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    RollbackRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.BeginTransactionRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.RollbackRequest";
                     };
     
-                    return BeginTransactionRequest;
+                    return RollbackRequest;
                 })();
     
-                v1.CommitRequest = (function() {
+                v1.BatchWriteRequest = (function() {
     
                     /**
-                     * Properties of a CommitRequest.
+                     * Properties of a BatchWriteRequest.
                      * @memberof google.spanner.v1
-                     * @interface ICommitRequest
-                     * @property {string|null} [session] CommitRequest session
-                     * @property {Uint8Array|null} [transactionId] CommitRequest transactionId
-                     * @property {google.spanner.v1.ITransactionOptions|null} [singleUseTransaction] CommitRequest singleUseTransaction
-                     * @property {Array.<google.spanner.v1.IMutation>|null} [mutations] CommitRequest mutations
-                     * @property {boolean|null} [returnCommitStats] CommitRequest returnCommitStats
-                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] CommitRequest requestOptions
+                     * @interface IBatchWriteRequest
+                     * @property {string|null} [session] BatchWriteRequest session
+                     * @property {google.spanner.v1.IRequestOptions|null} [requestOptions] BatchWriteRequest requestOptions
+                     * @property {Array.<google.spanner.v1.BatchWriteRequest.IMutationGroup>|null} [mutationGroups] BatchWriteRequest mutationGroups
                      */
     
                     /**
-                     * Constructs a new CommitRequest.
+                     * Constructs a new BatchWriteRequest.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a CommitRequest.
-                     * @implements ICommitRequest
+                     * @classdesc Represents a BatchWriteRequest.
+                     * @implements IBatchWriteRequest
                      * @constructor
-                     * @param {google.spanner.v1.ICommitRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IBatchWriteRequest=} [properties] Properties to set
                      */
-                    function CommitRequest(properties) {
-                        this.mutations = [];
+                    function BatchWriteRequest(properties) {
+                        this.mutationGroups = [];
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -48016,135 +52104,91 @@
                     }
     
                     /**
-                     * CommitRequest session.
+                     * BatchWriteRequest session.
                      * @member {string} session
-                     * @memberof google.spanner.v1.CommitRequest
-                     * @instance
-                     */
-                    CommitRequest.prototype.session = "";
-    
-                    /**
-                     * CommitRequest transactionId.
-                     * @member {Uint8Array|null|undefined} transactionId
-                     * @memberof google.spanner.v1.CommitRequest
-                     * @instance
-                     */
-                    CommitRequest.prototype.transactionId = null;
-    
-                    /**
-                     * CommitRequest singleUseTransaction.
-                     * @member {google.spanner.v1.ITransactionOptions|null|undefined} singleUseTransaction
-                     * @memberof google.spanner.v1.CommitRequest
-                     * @instance
-                     */
-                    CommitRequest.prototype.singleUseTransaction = null;
-    
-                    /**
-                     * CommitRequest mutations.
-                     * @member {Array.<google.spanner.v1.IMutation>} mutations
-                     * @memberof google.spanner.v1.CommitRequest
-                     * @instance
-                     */
-                    CommitRequest.prototype.mutations = $util.emptyArray;
-    
-                    /**
-                     * CommitRequest returnCommitStats.
-                     * @member {boolean} returnCommitStats
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @instance
                      */
-                    CommitRequest.prototype.returnCommitStats = false;
+                    BatchWriteRequest.prototype.session = "";
     
                     /**
-                     * CommitRequest requestOptions.
+                     * BatchWriteRequest requestOptions.
                      * @member {google.spanner.v1.IRequestOptions|null|undefined} requestOptions
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @instance
                      */
-                    CommitRequest.prototype.requestOptions = null;
-    
-                    // OneOf field names bound to virtual getters and setters
-                    var $oneOfFields;
+                    BatchWriteRequest.prototype.requestOptions = null;
     
                     /**
-                     * CommitRequest transaction.
-                     * @member {"transactionId"|"singleUseTransaction"|undefined} transaction
-                     * @memberof google.spanner.v1.CommitRequest
+                     * BatchWriteRequest mutationGroups.
+                     * @member {Array.<google.spanner.v1.BatchWriteRequest.IMutationGroup>} mutationGroups
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @instance
                      */
-                    Object.defineProperty(CommitRequest.prototype, "transaction", {
-                        get: $util.oneOfGetter($oneOfFields = ["transactionId", "singleUseTransaction"]),
-                        set: $util.oneOfSetter($oneOfFields)
-                    });
+                    BatchWriteRequest.prototype.mutationGroups = $util.emptyArray;
     
                     /**
-                     * Creates a new CommitRequest instance using the specified properties.
+                     * Creates a new BatchWriteRequest instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
-                     * @param {google.spanner.v1.ICommitRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.CommitRequest} CommitRequest instance
+                     * @param {google.spanner.v1.IBatchWriteRequest=} [properties] Properties to set
+                     * @returns {google.spanner.v1.BatchWriteRequest} BatchWriteRequest instance
                      */
-                    CommitRequest.create = function create(properties) {
-                        return new CommitRequest(properties);
+                    BatchWriteRequest.create = function create(properties) {
+                        return new BatchWriteRequest(properties);
                     };
     
                     /**
-                     * Encodes the specified CommitRequest message. Does not implicitly {@link google.spanner.v1.CommitRequest.verify|verify} messages.
+                     * Encodes the specified BatchWriteRequest message. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
-                     * @param {google.spanner.v1.ICommitRequest} message CommitRequest message or plain object to encode
+                     * @param {google.spanner.v1.IBatchWriteRequest} message BatchWriteRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    CommitRequest.encode = function encode(message, writer) {
+                    BatchWriteRequest.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
                         if (message.session != null && Object.hasOwnProperty.call(message, "session"))
                             writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.transactionId != null && Object.hasOwnProperty.call(message, "transactionId"))
-                            writer.uint32(/* id 2, wireType 2 =*/18).bytes(message.transactionId);
-                        if (message.singleUseTransaction != null && Object.hasOwnProperty.call(message, "singleUseTransaction"))
-                            $root.google.spanner.v1.TransactionOptions.encode(message.singleUseTransaction, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
-                        if (message.mutations != null && message.mutations.length)
-                            for (var i = 0; i < message.mutations.length; ++i)
-                                $root.google.spanner.v1.Mutation.encode(message.mutations[i], writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
-                        if (message.returnCommitStats != null && Object.hasOwnProperty.call(message, "returnCommitStats"))
-                            writer.uint32(/* id 5, wireType 0 =*/40).bool(message.returnCommitStats);
                         if (message.requestOptions != null && Object.hasOwnProperty.call(message, "requestOptions"))
-                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 6, wireType 2 =*/50).fork()).ldelim();
+                            $root.google.spanner.v1.RequestOptions.encode(message.requestOptions, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
+                        if (message.mutationGroups != null && message.mutationGroups.length)
+                            for (var i = 0; i < message.mutationGroups.length; ++i)
+                                $root.google.spanner.v1.BatchWriteRequest.MutationGroup.encode(message.mutationGroups[i], writer.uint32(/* id 4, wireType 2 =*/34).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified CommitRequest message, length delimited. Does not implicitly {@link google.spanner.v1.CommitRequest.verify|verify} messages.
+                     * Encodes the specified BatchWriteRequest message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
-                     * @param {google.spanner.v1.ICommitRequest} message CommitRequest message or plain object to encode
+                     * @param {google.spanner.v1.IBatchWriteRequest} message BatchWriteRequest message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    CommitRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    BatchWriteRequest.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a CommitRequest message from the specified reader or buffer.
+                     * Decodes a BatchWriteRequest message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
+                     * @returns {google.spanner.v1.BatchWriteRequest} BatchWriteRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    CommitRequest.decode = function decode(reader, length) {
+                    BatchWriteRequest.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.CommitRequest();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.BatchWriteRequest();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
@@ -48152,26 +52196,14 @@
                                     message.session = reader.string();
                                     break;
                                 }
-                            case 2: {
-                                    message.transactionId = reader.bytes();
-                                    break;
-                                }
                             case 3: {
-                                    message.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.decode(reader, reader.uint32());
+                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
                                     break;
                                 }
                             case 4: {
-                                    if (!(message.mutations && message.mutations.length))
-                                        message.mutations = [];
-                                    message.mutations.push($root.google.spanner.v1.Mutation.decode(reader, reader.uint32()));
-                                    break;
-                                }
-                            case 5: {
-                                    message.returnCommitStats = reader.bool();
-                                    break;
-                                }
-                            case 6: {
-                                    message.requestOptions = $root.google.spanner.v1.RequestOptions.decode(reader, reader.uint32());
+                                    if (!(message.mutationGroups && message.mutationGroups.length))
+                                        message.mutationGroups = [];
+                                    message.mutationGroups.push($root.google.spanner.v1.BatchWriteRequest.MutationGroup.decode(reader, reader.uint32()));
                                     break;
                                 }
                             default:
@@ -48183,207 +52215,389 @@
                     };
     
                     /**
-                     * Decodes a CommitRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a BatchWriteRequest message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
+                     * @returns {google.spanner.v1.BatchWriteRequest} BatchWriteRequest
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    CommitRequest.decodeDelimited = function decodeDelimited(reader) {
+                    BatchWriteRequest.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a CommitRequest message.
+                     * Verifies a BatchWriteRequest message.
                      * @function verify
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    CommitRequest.verify = function verify(message) {
+                    BatchWriteRequest.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        var properties = {};
                         if (message.session != null && message.hasOwnProperty("session"))
                             if (!$util.isString(message.session))
                                 return "session: string expected";
-                        if (message.transactionId != null && message.hasOwnProperty("transactionId")) {
-                            properties.transaction = 1;
-                            if (!(message.transactionId && typeof message.transactionId.length === "number" || $util.isString(message.transactionId)))
-                                return "transactionId: buffer expected";
-                        }
-                        if (message.singleUseTransaction != null && message.hasOwnProperty("singleUseTransaction")) {
-                            if (properties.transaction === 1)
-                                return "transaction: multiple values";
-                            properties.transaction = 1;
-                            {
-                                var error = $root.google.spanner.v1.TransactionOptions.verify(message.singleUseTransaction);
-                                if (error)
-                                    return "singleUseTransaction." + error;
-                            }
-                        }
-                        if (message.mutations != null && message.hasOwnProperty("mutations")) {
-                            if (!Array.isArray(message.mutations))
-                                return "mutations: array expected";
-                            for (var i = 0; i < message.mutations.length; ++i) {
-                                var error = $root.google.spanner.v1.Mutation.verify(message.mutations[i]);
-                                if (error)
-                                    return "mutations." + error;
-                            }
-                        }
-                        if (message.returnCommitStats != null && message.hasOwnProperty("returnCommitStats"))
-                            if (typeof message.returnCommitStats !== "boolean")
-                                return "returnCommitStats: boolean expected";
                         if (message.requestOptions != null && message.hasOwnProperty("requestOptions")) {
                             var error = $root.google.spanner.v1.RequestOptions.verify(message.requestOptions);
                             if (error)
                                 return "requestOptions." + error;
                         }
+                        if (message.mutationGroups != null && message.hasOwnProperty("mutationGroups")) {
+                            if (!Array.isArray(message.mutationGroups))
+                                return "mutationGroups: array expected";
+                            for (var i = 0; i < message.mutationGroups.length; ++i) {
+                                var error = $root.google.spanner.v1.BatchWriteRequest.MutationGroup.verify(message.mutationGroups[i]);
+                                if (error)
+                                    return "mutationGroups." + error;
+                            }
+                        }
                         return null;
                     };
     
                     /**
-                     * Creates a CommitRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a BatchWriteRequest message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.CommitRequest} CommitRequest
+                     * @returns {google.spanner.v1.BatchWriteRequest} BatchWriteRequest
                      */
-                    CommitRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.CommitRequest)
+                    BatchWriteRequest.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.BatchWriteRequest)
                             return object;
-                        var message = new $root.google.spanner.v1.CommitRequest();
+                        var message = new $root.google.spanner.v1.BatchWriteRequest();
                         if (object.session != null)
                             message.session = String(object.session);
-                        if (object.transactionId != null)
-                            if (typeof object.transactionId === "string")
-                                $util.base64.decode(object.transactionId, message.transactionId = $util.newBuffer($util.base64.length(object.transactionId)), 0);
-                            else if (object.transactionId.length >= 0)
-                                message.transactionId = object.transactionId;
-                        if (object.singleUseTransaction != null) {
-                            if (typeof object.singleUseTransaction !== "object")
-                                throw TypeError(".google.spanner.v1.CommitRequest.singleUseTransaction: object expected");
-                            message.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.fromObject(object.singleUseTransaction);
-                        }
-                        if (object.mutations) {
-                            if (!Array.isArray(object.mutations))
-                                throw TypeError(".google.spanner.v1.CommitRequest.mutations: array expected");
-                            message.mutations = [];
-                            for (var i = 0; i < object.mutations.length; ++i) {
-                                if (typeof object.mutations[i] !== "object")
-                                    throw TypeError(".google.spanner.v1.CommitRequest.mutations: object expected");
-                                message.mutations[i] = $root.google.spanner.v1.Mutation.fromObject(object.mutations[i]);
-                            }
-                        }
-                        if (object.returnCommitStats != null)
-                            message.returnCommitStats = Boolean(object.returnCommitStats);
                         if (object.requestOptions != null) {
                             if (typeof object.requestOptions !== "object")
-                                throw TypeError(".google.spanner.v1.CommitRequest.requestOptions: object expected");
+                                throw TypeError(".google.spanner.v1.BatchWriteRequest.requestOptions: object expected");
                             message.requestOptions = $root.google.spanner.v1.RequestOptions.fromObject(object.requestOptions);
                         }
+                        if (object.mutationGroups) {
+                            if (!Array.isArray(object.mutationGroups))
+                                throw TypeError(".google.spanner.v1.BatchWriteRequest.mutationGroups: array expected");
+                            message.mutationGroups = [];
+                            for (var i = 0; i < object.mutationGroups.length; ++i) {
+                                if (typeof object.mutationGroups[i] !== "object")
+                                    throw TypeError(".google.spanner.v1.BatchWriteRequest.mutationGroups: object expected");
+                                message.mutationGroups[i] = $root.google.spanner.v1.BatchWriteRequest.MutationGroup.fromObject(object.mutationGroups[i]);
+                            }
+                        }
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a CommitRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a BatchWriteRequest message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
-                     * @param {google.spanner.v1.CommitRequest} message CommitRequest
+                     * @param {google.spanner.v1.BatchWriteRequest} message BatchWriteRequest
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    CommitRequest.toObject = function toObject(message, options) {
+                    BatchWriteRequest.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
                         if (options.arrays || options.defaults)
-                            object.mutations = [];
+                            object.mutationGroups = [];
                         if (options.defaults) {
                             object.session = "";
-                            object.returnCommitStats = false;
                             object.requestOptions = null;
                         }
                         if (message.session != null && message.hasOwnProperty("session"))
                             object.session = message.session;
-                        if (message.transactionId != null && message.hasOwnProperty("transactionId")) {
-                            object.transactionId = options.bytes === String ? $util.base64.encode(message.transactionId, 0, message.transactionId.length) : options.bytes === Array ? Array.prototype.slice.call(message.transactionId) : message.transactionId;
-                            if (options.oneofs)
-                                object.transaction = "transactionId";
-                        }
-                        if (message.singleUseTransaction != null && message.hasOwnProperty("singleUseTransaction")) {
-                            object.singleUseTransaction = $root.google.spanner.v1.TransactionOptions.toObject(message.singleUseTransaction, options);
-                            if (options.oneofs)
-                                object.transaction = "singleUseTransaction";
-                        }
-                        if (message.mutations && message.mutations.length) {
-                            object.mutations = [];
-                            for (var j = 0; j < message.mutations.length; ++j)
-                                object.mutations[j] = $root.google.spanner.v1.Mutation.toObject(message.mutations[j], options);
-                        }
-                        if (message.returnCommitStats != null && message.hasOwnProperty("returnCommitStats"))
-                            object.returnCommitStats = message.returnCommitStats;
                         if (message.requestOptions != null && message.hasOwnProperty("requestOptions"))
                             object.requestOptions = $root.google.spanner.v1.RequestOptions.toObject(message.requestOptions, options);
+                        if (message.mutationGroups && message.mutationGroups.length) {
+                            object.mutationGroups = [];
+                            for (var j = 0; j < message.mutationGroups.length; ++j)
+                                object.mutationGroups[j] = $root.google.spanner.v1.BatchWriteRequest.MutationGroup.toObject(message.mutationGroups[j], options);
+                        }
                         return object;
                     };
     
                     /**
-                     * Converts this CommitRequest to JSON.
+                     * Converts this BatchWriteRequest to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    CommitRequest.prototype.toJSON = function toJSON() {
+                    BatchWriteRequest.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for CommitRequest
+                     * Gets the default type url for BatchWriteRequest
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.CommitRequest
+                     * @memberof google.spanner.v1.BatchWriteRequest
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    CommitRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    BatchWriteRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.CommitRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.BatchWriteRequest";
                     };
     
-                    return CommitRequest;
+                    BatchWriteRequest.MutationGroup = (function() {
+    
+                        /**
+                         * Properties of a MutationGroup.
+                         * @memberof google.spanner.v1.BatchWriteRequest
+                         * @interface IMutationGroup
+                         * @property {Array.<google.spanner.v1.IMutation>|null} [mutations] MutationGroup mutations
+                         */
+    
+                        /**
+                         * Constructs a new MutationGroup.
+                         * @memberof google.spanner.v1.BatchWriteRequest
+                         * @classdesc Represents a MutationGroup.
+                         * @implements IMutationGroup
+                         * @constructor
+                         * @param {google.spanner.v1.BatchWriteRequest.IMutationGroup=} [properties] Properties to set
+                         */
+                        function MutationGroup(properties) {
+                            this.mutations = [];
+                            if (properties)
+                                for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
+                                    if (properties[keys[i]] != null)
+                                        this[keys[i]] = properties[keys[i]];
+                        }
+    
+                        /**
+                         * MutationGroup mutations.
+                         * @member {Array.<google.spanner.v1.IMutation>} mutations
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @instance
+                         */
+                        MutationGroup.prototype.mutations = $util.emptyArray;
+    
+                        /**
+                         * Creates a new MutationGroup instance using the specified properties.
+                         * @function create
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {google.spanner.v1.BatchWriteRequest.IMutationGroup=} [properties] Properties to set
+                         * @returns {google.spanner.v1.BatchWriteRequest.MutationGroup} MutationGroup instance
+                         */
+                        MutationGroup.create = function create(properties) {
+                            return new MutationGroup(properties);
+                        };
+    
+                        /**
+                         * Encodes the specified MutationGroup message. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.MutationGroup.verify|verify} messages.
+                         * @function encode
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {google.spanner.v1.BatchWriteRequest.IMutationGroup} message MutationGroup message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        MutationGroup.encode = function encode(message, writer) {
+                            if (!writer)
+                                writer = $Writer.create();
+                            if (message.mutations != null && message.mutations.length)
+                                for (var i = 0; i < message.mutations.length; ++i)
+                                    $root.google.spanner.v1.Mutation.encode(message.mutations[i], writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                            return writer;
+                        };
+    
+                        /**
+                         * Encodes the specified MutationGroup message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteRequest.MutationGroup.verify|verify} messages.
+                         * @function encodeDelimited
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {google.spanner.v1.BatchWriteRequest.IMutationGroup} message MutationGroup message or plain object to encode
+                         * @param {$protobuf.Writer} [writer] Writer to encode to
+                         * @returns {$protobuf.Writer} Writer
+                         */
+                        MutationGroup.encodeDelimited = function encodeDelimited(message, writer) {
+                            return this.encode(message, writer).ldelim();
+                        };
+    
+                        /**
+                         * Decodes a MutationGroup message from the specified reader or buffer.
+                         * @function decode
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @param {number} [length] Message length if known beforehand
+                         * @returns {google.spanner.v1.BatchWriteRequest.MutationGroup} MutationGroup
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        MutationGroup.decode = function decode(reader, length) {
+                            if (!(reader instanceof $Reader))
+                                reader = $Reader.create(reader);
+                            var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.BatchWriteRequest.MutationGroup();
+                            while (reader.pos < end) {
+                                var tag = reader.uint32();
+                                switch (tag >>> 3) {
+                                case 1: {
+                                        if (!(message.mutations && message.mutations.length))
+                                            message.mutations = [];
+                                        message.mutations.push($root.google.spanner.v1.Mutation.decode(reader, reader.uint32()));
+                                        break;
+                                    }
+                                default:
+                                    reader.skipType(tag & 7);
+                                    break;
+                                }
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Decodes a MutationGroup message from the specified reader or buffer, length delimited.
+                         * @function decodeDelimited
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
+                         * @returns {google.spanner.v1.BatchWriteRequest.MutationGroup} MutationGroup
+                         * @throws {Error} If the payload is not a reader or valid buffer
+                         * @throws {$protobuf.util.ProtocolError} If required fields are missing
+                         */
+                        MutationGroup.decodeDelimited = function decodeDelimited(reader) {
+                            if (!(reader instanceof $Reader))
+                                reader = new $Reader(reader);
+                            return this.decode(reader, reader.uint32());
+                        };
+    
+                        /**
+                         * Verifies a MutationGroup message.
+                         * @function verify
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {Object.<string,*>} message Plain object to verify
+                         * @returns {string|null} `null` if valid, otherwise the reason why it is not
+                         */
+                        MutationGroup.verify = function verify(message) {
+                            if (typeof message !== "object" || message === null)
+                                return "object expected";
+                            if (message.mutations != null && message.hasOwnProperty("mutations")) {
+                                if (!Array.isArray(message.mutations))
+                                    return "mutations: array expected";
+                                for (var i = 0; i < message.mutations.length; ++i) {
+                                    var error = $root.google.spanner.v1.Mutation.verify(message.mutations[i]);
+                                    if (error)
+                                        return "mutations." + error;
+                                }
+                            }
+                            return null;
+                        };
+    
+                        /**
+                         * Creates a MutationGroup message from a plain object. Also converts values to their respective internal types.
+                         * @function fromObject
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {Object.<string,*>} object Plain object
+                         * @returns {google.spanner.v1.BatchWriteRequest.MutationGroup} MutationGroup
+                         */
+                        MutationGroup.fromObject = function fromObject(object) {
+                            if (object instanceof $root.google.spanner.v1.BatchWriteRequest.MutationGroup)
+                                return object;
+                            var message = new $root.google.spanner.v1.BatchWriteRequest.MutationGroup();
+                            if (object.mutations) {
+                                if (!Array.isArray(object.mutations))
+                                    throw TypeError(".google.spanner.v1.BatchWriteRequest.MutationGroup.mutations: array expected");
+                                message.mutations = [];
+                                for (var i = 0; i < object.mutations.length; ++i) {
+                                    if (typeof object.mutations[i] !== "object")
+                                        throw TypeError(".google.spanner.v1.BatchWriteRequest.MutationGroup.mutations: object expected");
+                                    message.mutations[i] = $root.google.spanner.v1.Mutation.fromObject(object.mutations[i]);
+                                }
+                            }
+                            return message;
+                        };
+    
+                        /**
+                         * Creates a plain object from a MutationGroup message. Also converts values to other types if specified.
+                         * @function toObject
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {google.spanner.v1.BatchWriteRequest.MutationGroup} message MutationGroup
+                         * @param {$protobuf.IConversionOptions} [options] Conversion options
+                         * @returns {Object.<string,*>} Plain object
+                         */
+                        MutationGroup.toObject = function toObject(message, options) {
+                            if (!options)
+                                options = {};
+                            var object = {};
+                            if (options.arrays || options.defaults)
+                                object.mutations = [];
+                            if (message.mutations && message.mutations.length) {
+                                object.mutations = [];
+                                for (var j = 0; j < message.mutations.length; ++j)
+                                    object.mutations[j] = $root.google.spanner.v1.Mutation.toObject(message.mutations[j], options);
+                            }
+                            return object;
+                        };
+    
+                        /**
+                         * Converts this MutationGroup to JSON.
+                         * @function toJSON
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @instance
+                         * @returns {Object.<string,*>} JSON object
+                         */
+                        MutationGroup.prototype.toJSON = function toJSON() {
+                            return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
+                        };
+    
+                        /**
+                         * Gets the default type url for MutationGroup
+                         * @function getTypeUrl
+                         * @memberof google.spanner.v1.BatchWriteRequest.MutationGroup
+                         * @static
+                         * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
+                         * @returns {string} The default type url
+                         */
+                        MutationGroup.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                            if (typeUrlPrefix === undefined) {
+                                typeUrlPrefix = "type.googleapis.com";
+                            }
+                            return typeUrlPrefix + "/google.spanner.v1.BatchWriteRequest.MutationGroup";
+                        };
+    
+                        return MutationGroup;
+                    })();
+    
+                    return BatchWriteRequest;
                 })();
     
-                v1.RollbackRequest = (function() {
+                v1.BatchWriteResponse = (function() {
     
                     /**
-                     * Properties of a RollbackRequest.
+                     * Properties of a BatchWriteResponse.
                      * @memberof google.spanner.v1
-                     * @interface IRollbackRequest
-                     * @property {string|null} [session] RollbackRequest session
-                     * @property {Uint8Array|null} [transactionId] RollbackRequest transactionId
+                     * @interface IBatchWriteResponse
+                     * @property {Array.<number>|null} [indexes] BatchWriteResponse indexes
+                     * @property {google.rpc.IStatus|null} [status] BatchWriteResponse status
+                     * @property {google.protobuf.ITimestamp|null} [commitTimestamp] BatchWriteResponse commitTimestamp
                      */
     
                     /**
-                     * Constructs a new RollbackRequest.
+                     * Constructs a new BatchWriteResponse.
                      * @memberof google.spanner.v1
-                     * @classdesc Represents a RollbackRequest.
-                     * @implements IRollbackRequest
+                     * @classdesc Represents a BatchWriteResponse.
+                     * @implements IBatchWriteResponse
                      * @constructor
-                     * @param {google.spanner.v1.IRollbackRequest=} [properties] Properties to set
+                     * @param {google.spanner.v1.IBatchWriteResponse=} [properties] Properties to set
                      */
-                    function RollbackRequest(properties) {
+                    function BatchWriteResponse(properties) {
+                        this.indexes = [];
                         if (properties)
                             for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                 if (properties[keys[i]] != null)
@@ -48391,89 +52605,114 @@
                     }
     
                     /**
-                     * RollbackRequest session.
-                     * @member {string} session
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * BatchWriteResponse indexes.
+                     * @member {Array.<number>} indexes
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @instance
                      */
-                    RollbackRequest.prototype.session = "";
+                    BatchWriteResponse.prototype.indexes = $util.emptyArray;
     
                     /**
-                     * RollbackRequest transactionId.
-                     * @member {Uint8Array} transactionId
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * BatchWriteResponse status.
+                     * @member {google.rpc.IStatus|null|undefined} status
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @instance
                      */
-                    RollbackRequest.prototype.transactionId = $util.newBuffer([]);
+                    BatchWriteResponse.prototype.status = null;
     
                     /**
-                     * Creates a new RollbackRequest instance using the specified properties.
+                     * BatchWriteResponse commitTimestamp.
+                     * @member {google.protobuf.ITimestamp|null|undefined} commitTimestamp
+                     * @memberof google.spanner.v1.BatchWriteResponse
+                     * @instance
+                     */
+                    BatchWriteResponse.prototype.commitTimestamp = null;
+    
+                    /**
+                     * Creates a new BatchWriteResponse instance using the specified properties.
                      * @function create
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
-                     * @param {google.spanner.v1.IRollbackRequest=} [properties] Properties to set
-                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest instance
+                     * @param {google.spanner.v1.IBatchWriteResponse=} [properties] Properties to set
+                     * @returns {google.spanner.v1.BatchWriteResponse} BatchWriteResponse instance
                      */
-                    RollbackRequest.create = function create(properties) {
-                        return new RollbackRequest(properties);
+                    BatchWriteResponse.create = function create(properties) {
+                        return new BatchWriteResponse(properties);
                     };
     
                     /**
-                     * Encodes the specified RollbackRequest message. Does not implicitly {@link google.spanner.v1.RollbackRequest.verify|verify} messages.
+                     * Encodes the specified BatchWriteResponse message. Does not implicitly {@link google.spanner.v1.BatchWriteResponse.verify|verify} messages.
                      * @function encode
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
-                     * @param {google.spanner.v1.IRollbackRequest} message RollbackRequest message or plain object to encode
+                     * @param {google.spanner.v1.IBatchWriteResponse} message BatchWriteResponse message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    RollbackRequest.encode = function encode(message, writer) {
+                    BatchWriteResponse.encode = function encode(message, writer) {
                         if (!writer)
                             writer = $Writer.create();
-                        if (message.session != null && Object.hasOwnProperty.call(message, "session"))
-                            writer.uint32(/* id 1, wireType 2 =*/10).string(message.session);
-                        if (message.transactionId != null && Object.hasOwnProperty.call(message, "transactionId"))
-                            writer.uint32(/* id 2, wireType 2 =*/18).bytes(message.transactionId);
+                        if (message.indexes != null && message.indexes.length) {
+                            writer.uint32(/* id 1, wireType 2 =*/10).fork();
+                            for (var i = 0; i < message.indexes.length; ++i)
+                                writer.int32(message.indexes[i]);
+                            writer.ldelim();
+                        }
+                        if (message.status != null && Object.hasOwnProperty.call(message, "status"))
+                            $root.google.rpc.Status.encode(message.status, writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                        if (message.commitTimestamp != null && Object.hasOwnProperty.call(message, "commitTimestamp"))
+                            $root.google.protobuf.Timestamp.encode(message.commitTimestamp, writer.uint32(/* id 3, wireType 2 =*/26).fork()).ldelim();
                         return writer;
                     };
     
                     /**
-                     * Encodes the specified RollbackRequest message, length delimited. Does not implicitly {@link google.spanner.v1.RollbackRequest.verify|verify} messages.
+                     * Encodes the specified BatchWriteResponse message, length delimited. Does not implicitly {@link google.spanner.v1.BatchWriteResponse.verify|verify} messages.
                      * @function encodeDelimited
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
-                     * @param {google.spanner.v1.IRollbackRequest} message RollbackRequest message or plain object to encode
+                     * @param {google.spanner.v1.IBatchWriteResponse} message BatchWriteResponse message or plain object to encode
                      * @param {$protobuf.Writer} [writer] Writer to encode to
                      * @returns {$protobuf.Writer} Writer
                      */
-                    RollbackRequest.encodeDelimited = function encodeDelimited(message, writer) {
+                    BatchWriteResponse.encodeDelimited = function encodeDelimited(message, writer) {
                         return this.encode(message, writer).ldelim();
                     };
     
                     /**
-                     * Decodes a RollbackRequest message from the specified reader or buffer.
+                     * Decodes a BatchWriteResponse message from the specified reader or buffer.
                      * @function decode
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
                      * @param {number} [length] Message length if known beforehand
-                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
+                     * @returns {google.spanner.v1.BatchWriteResponse} BatchWriteResponse
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    RollbackRequest.decode = function decode(reader, length) {
+                    BatchWriteResponse.decode = function decode(reader, length) {
                         if (!(reader instanceof $Reader))
                             reader = $Reader.create(reader);
-                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.RollbackRequest();
+                        var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.spanner.v1.BatchWriteResponse();
                         while (reader.pos < end) {
                             var tag = reader.uint32();
                             switch (tag >>> 3) {
                             case 1: {
-                                    message.session = reader.string();
+                                    if (!(message.indexes && message.indexes.length))
+                                        message.indexes = [];
+                                    if ((tag & 7) === 2) {
+                                        var end2 = reader.uint32() + reader.pos;
+                                        while (reader.pos < end2)
+                                            message.indexes.push(reader.int32());
+                                    } else
+                                        message.indexes.push(reader.int32());
                                     break;
                                 }
                             case 2: {
-                                    message.transactionId = reader.bytes();
+                                    message.status = $root.google.rpc.Status.decode(reader, reader.uint32());
+                                    break;
+                                }
+                            case 3: {
+                                    message.commitTimestamp = $root.google.protobuf.Timestamp.decode(reader, reader.uint32());
                                     break;
                                 }
                             default:
@@ -48485,120 +52724,142 @@
                     };
     
                     /**
-                     * Decodes a RollbackRequest message from the specified reader or buffer, length delimited.
+                     * Decodes a BatchWriteResponse message from the specified reader or buffer, length delimited.
                      * @function decodeDelimited
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
                      * @param {$protobuf.Reader|Uint8Array} reader Reader or buffer to decode from
-                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
+                     * @returns {google.spanner.v1.BatchWriteResponse} BatchWriteResponse
                      * @throws {Error} If the payload is not a reader or valid buffer
                      * @throws {$protobuf.util.ProtocolError} If required fields are missing
                      */
-                    RollbackRequest.decodeDelimited = function decodeDelimited(reader) {
+                    BatchWriteResponse.decodeDelimited = function decodeDelimited(reader) {
                         if (!(reader instanceof $Reader))
                             reader = new $Reader(reader);
                         return this.decode(reader, reader.uint32());
                     };
     
                     /**
-                     * Verifies a RollbackRequest message.
+                     * Verifies a BatchWriteResponse message.
                      * @function verify
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
                      * @param {Object.<string,*>} message Plain object to verify
                      * @returns {string|null} `null` if valid, otherwise the reason why it is not
                      */
-                    RollbackRequest.verify = function verify(message) {
+                    BatchWriteResponse.verify = function verify(message) {
                         if (typeof message !== "object" || message === null)
                             return "object expected";
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            if (!$util.isString(message.session))
-                                return "session: string expected";
-                        if (message.transactionId != null && message.hasOwnProperty("transactionId"))
-                            if (!(message.transactionId && typeof message.transactionId.length === "number" || $util.isString(message.transactionId)))
-                                return "transactionId: buffer expected";
+                        if (message.indexes != null && message.hasOwnProperty("indexes")) {
+                            if (!Array.isArray(message.indexes))
+                                return "indexes: array expected";
+                            for (var i = 0; i < message.indexes.length; ++i)
+                                if (!$util.isInteger(message.indexes[i]))
+                                    return "indexes: integer[] expected";
+                        }
+                        if (message.status != null && message.hasOwnProperty("status")) {
+                            var error = $root.google.rpc.Status.verify(message.status);
+                            if (error)
+                                return "status." + error;
+                        }
+                        if (message.commitTimestamp != null && message.hasOwnProperty("commitTimestamp")) {
+                            var error = $root.google.protobuf.Timestamp.verify(message.commitTimestamp);
+                            if (error)
+                                return "commitTimestamp." + error;
+                        }
                         return null;
                     };
     
                     /**
-                     * Creates a RollbackRequest message from a plain object. Also converts values to their respective internal types.
+                     * Creates a BatchWriteResponse message from a plain object. Also converts values to their respective internal types.
                      * @function fromObject
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
                      * @param {Object.<string,*>} object Plain object
-                     * @returns {google.spanner.v1.RollbackRequest} RollbackRequest
+                     * @returns {google.spanner.v1.BatchWriteResponse} BatchWriteResponse
                      */
-                    RollbackRequest.fromObject = function fromObject(object) {
-                        if (object instanceof $root.google.spanner.v1.RollbackRequest)
+                    BatchWriteResponse.fromObject = function fromObject(object) {
+                        if (object instanceof $root.google.spanner.v1.BatchWriteResponse)
                             return object;
-                        var message = new $root.google.spanner.v1.RollbackRequest();
-                        if (object.session != null)
-                            message.session = String(object.session);
-                        if (object.transactionId != null)
-                            if (typeof object.transactionId === "string")
-                                $util.base64.decode(object.transactionId, message.transactionId = $util.newBuffer($util.base64.length(object.transactionId)), 0);
-                            else if (object.transactionId.length >= 0)
-                                message.transactionId = object.transactionId;
+                        var message = new $root.google.spanner.v1.BatchWriteResponse();
+                        if (object.indexes) {
+                            if (!Array.isArray(object.indexes))
+                                throw TypeError(".google.spanner.v1.BatchWriteResponse.indexes: array expected");
+                            message.indexes = [];
+                            for (var i = 0; i < object.indexes.length; ++i)
+                                message.indexes[i] = object.indexes[i] | 0;
+                        }
+                        if (object.status != null) {
+                            if (typeof object.status !== "object")
+                                throw TypeError(".google.spanner.v1.BatchWriteResponse.status: object expected");
+                            message.status = $root.google.rpc.Status.fromObject(object.status);
+                        }
+                        if (object.commitTimestamp != null) {
+                            if (typeof object.commitTimestamp !== "object")
+                                throw TypeError(".google.spanner.v1.BatchWriteResponse.commitTimestamp: object expected");
+                            message.commitTimestamp = $root.google.protobuf.Timestamp.fromObject(object.commitTimestamp);
+                        }
                         return message;
                     };
     
                     /**
-                     * Creates a plain object from a RollbackRequest message. Also converts values to other types if specified.
+                     * Creates a plain object from a BatchWriteResponse message. Also converts values to other types if specified.
                      * @function toObject
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
-                     * @param {google.spanner.v1.RollbackRequest} message RollbackRequest
+                     * @param {google.spanner.v1.BatchWriteResponse} message BatchWriteResponse
                      * @param {$protobuf.IConversionOptions} [options] Conversion options
                      * @returns {Object.<string,*>} Plain object
                      */
-                    RollbackRequest.toObject = function toObject(message, options) {
+                    BatchWriteResponse.toObject = function toObject(message, options) {
                         if (!options)
                             options = {};
                         var object = {};
+                        if (options.arrays || options.defaults)
+                            object.indexes = [];
                         if (options.defaults) {
-                            object.session = "";
-                            if (options.bytes === String)
-                                object.transactionId = "";
-                            else {
-                                object.transactionId = [];
-                                if (options.bytes !== Array)
-                                    object.transactionId = $util.newBuffer(object.transactionId);
-                            }
+                            object.status = null;
+                            object.commitTimestamp = null;
                         }
-                        if (message.session != null && message.hasOwnProperty("session"))
-                            object.session = message.session;
-                        if (message.transactionId != null && message.hasOwnProperty("transactionId"))
-                            object.transactionId = options.bytes === String ? $util.base64.encode(message.transactionId, 0, message.transactionId.length) : options.bytes === Array ? Array.prototype.slice.call(message.transactionId) : message.transactionId;
+                        if (message.indexes && message.indexes.length) {
+                            object.indexes = [];
+                            for (var j = 0; j < message.indexes.length; ++j)
+                                object.indexes[j] = message.indexes[j];
+                        }
+                        if (message.status != null && message.hasOwnProperty("status"))
+                            object.status = $root.google.rpc.Status.toObject(message.status, options);
+                        if (message.commitTimestamp != null && message.hasOwnProperty("commitTimestamp"))
+                            object.commitTimestamp = $root.google.protobuf.Timestamp.toObject(message.commitTimestamp, options);
                         return object;
                     };
     
                     /**
-                     * Converts this RollbackRequest to JSON.
+                     * Converts this BatchWriteResponse to JSON.
                      * @function toJSON
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @instance
                      * @returns {Object.<string,*>} JSON object
                      */
-                    RollbackRequest.prototype.toJSON = function toJSON() {
+                    BatchWriteResponse.prototype.toJSON = function toJSON() {
                         return this.constructor.toObject(this, $protobuf.util.toJSONOptions);
                     };
     
                     /**
-                     * Gets the default type url for RollbackRequest
+                     * Gets the default type url for BatchWriteResponse
                      * @function getTypeUrl
-                     * @memberof google.spanner.v1.RollbackRequest
+                     * @memberof google.spanner.v1.BatchWriteResponse
                      * @static
                      * @param {string} [typeUrlPrefix] your custom typeUrlPrefix(default "type.googleapis.com")
                      * @returns {string} The default type url
                      */
-                    RollbackRequest.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
+                    BatchWriteResponse.getTypeUrl = function getTypeUrl(typeUrlPrefix) {
                         if (typeUrlPrefix === undefined) {
                             typeUrlPrefix = "type.googleapis.com";
                         }
-                        return typeUrlPrefix + "/google.spanner.v1.RollbackRequest";
+                        return typeUrlPrefix + "/google.spanner.v1.BatchWriteResponse";
                     };
     
-                    return RollbackRequest;
+                    return BatchWriteResponse;
                 })();
     
                 return v1;
@@ -51102,6 +55363,7 @@
                  * @property {string|null} [docTagPrefix] Publishing docTagPrefix
                  * @property {google.api.ClientLibraryOrganization|null} [organization] Publishing organization
                  * @property {Array.<google.api.IClientLibrarySettings>|null} [librarySettings] Publishing librarySettings
+                 * @property {string|null} [protoReferenceDocumentationUri] Publishing protoReferenceDocumentationUri
                  */
     
                 /**
@@ -51194,6 +55456,14 @@
                  */
                 Publishing.prototype.librarySettings = $util.emptyArray;
     
+                /**
+                 * Publishing protoReferenceDocumentationUri.
+                 * @member {string} protoReferenceDocumentationUri
+                 * @memberof google.api.Publishing
+                 * @instance
+                 */
+                Publishing.prototype.protoReferenceDocumentationUri = "";
+    
                 /**
                  * Creates a new Publishing instance using the specified properties.
                  * @function create
@@ -51239,6 +55509,8 @@
                     if (message.librarySettings != null && message.librarySettings.length)
                         for (var i = 0; i < message.librarySettings.length; ++i)
                             $root.google.api.ClientLibrarySettings.encode(message.librarySettings[i], writer.uint32(/* id 109, wireType 2 =*/874).fork()).ldelim();
+                    if (message.protoReferenceDocumentationUri != null && Object.hasOwnProperty.call(message, "protoReferenceDocumentationUri"))
+                        writer.uint32(/* id 110, wireType 2 =*/882).string(message.protoReferenceDocumentationUri);
                     return writer;
                 };
     
@@ -51315,6 +55587,10 @@
                                 message.librarySettings.push($root.google.api.ClientLibrarySettings.decode(reader, reader.uint32()));
                                 break;
                             }
+                        case 110: {
+                                message.protoReferenceDocumentationUri = reader.string();
+                                break;
+                            }
                         default:
                             reader.skipType(tag & 7);
                             break;
@@ -51390,6 +55666,9 @@
                         case 2:
                         case 3:
                         case 4:
+                        case 5:
+                        case 6:
+                        case 7:
                             break;
                         }
                     if (message.librarySettings != null && message.hasOwnProperty("librarySettings")) {
@@ -51401,6 +55680,9 @@
                                 return "librarySettings." + error;
                         }
                     }
+                    if (message.protoReferenceDocumentationUri != null && message.hasOwnProperty("protoReferenceDocumentationUri"))
+                        if (!$util.isString(message.protoReferenceDocumentationUri))
+                            return "protoReferenceDocumentationUri: string expected";
                     return null;
                 };
     
@@ -51470,6 +55752,18 @@
                     case 4:
                         message.organization = 4;
                         break;
+                    case "SHOPPING":
+                    case 5:
+                        message.organization = 5;
+                        break;
+                    case "GEO":
+                    case 6:
+                        message.organization = 6;
+                        break;
+                    case "GENERATIVE_AI":
+                    case 7:
+                        message.organization = 7;
+                        break;
                     }
                     if (object.librarySettings) {
                         if (!Array.isArray(object.librarySettings))
@@ -51481,6 +55775,8 @@
                             message.librarySettings[i] = $root.google.api.ClientLibrarySettings.fromObject(object.librarySettings[i]);
                         }
                     }
+                    if (object.protoReferenceDocumentationUri != null)
+                        message.protoReferenceDocumentationUri = String(object.protoReferenceDocumentationUri);
                     return message;
                 };
     
@@ -51509,6 +55805,7 @@
                         object.githubLabel = "";
                         object.docTagPrefix = "";
                         object.organization = options.enums === String ? "CLIENT_LIBRARY_ORGANIZATION_UNSPECIFIED" : 0;
+                        object.protoReferenceDocumentationUri = "";
                     }
                     if (message.methodSettings && message.methodSettings.length) {
                         object.methodSettings = [];
@@ -51537,6 +55834,8 @@
                         for (var j = 0; j < message.librarySettings.length; ++j)
                             object.librarySettings[j] = $root.google.api.ClientLibrarySettings.toObject(message.librarySettings[j], options);
                     }
+                    if (message.protoReferenceDocumentationUri != null && message.hasOwnProperty("protoReferenceDocumentationUri"))
+                        object.protoReferenceDocumentationUri = message.protoReferenceDocumentationUri;
                     return object;
                 };
     
@@ -52699,6 +56998,11 @@
                  * @memberof google.api
                  * @interface IDotnetSettings
                  * @property {google.api.ICommonLanguageSettings|null} [common] DotnetSettings common
+                 * @property {Object.<string,string>|null} [renamedServices] DotnetSettings renamedServices
+                 * @property {Object.<string,string>|null} [renamedResources] DotnetSettings renamedResources
+                 * @property {Array.<string>|null} [ignoredResources] DotnetSettings ignoredResources
+                 * @property {Array.<string>|null} [forcedNamespaceAliases] DotnetSettings forcedNamespaceAliases
+                 * @property {Array.<string>|null} [handwrittenSignatures] DotnetSettings handwrittenSignatures
                  */
     
                 /**
@@ -52710,6 +57014,11 @@
                  * @param {google.api.IDotnetSettings=} [properties] Properties to set
                  */
                 function DotnetSettings(properties) {
+                    this.renamedServices = {};
+                    this.renamedResources = {};
+                    this.ignoredResources = [];
+                    this.forcedNamespaceAliases = [];
+                    this.handwrittenSignatures = [];
                     if (properties)
                         for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                             if (properties[keys[i]] != null)
@@ -52724,6 +57033,46 @@
                  */
                 DotnetSettings.prototype.common = null;
     
+                /**
+                 * DotnetSettings renamedServices.
+                 * @member {Object.<string,string>} renamedServices
+                 * @memberof google.api.DotnetSettings
+                 * @instance
+                 */
+                DotnetSettings.prototype.renamedServices = $util.emptyObject;
+    
+                /**
+                 * DotnetSettings renamedResources.
+                 * @member {Object.<string,string>} renamedResources
+                 * @memberof google.api.DotnetSettings
+                 * @instance
+                 */
+                DotnetSettings.prototype.renamedResources = $util.emptyObject;
+    
+                /**
+                 * DotnetSettings ignoredResources.
+                 * @member {Array.<string>} ignoredResources
+                 * @memberof google.api.DotnetSettings
+                 * @instance
+                 */
+                DotnetSettings.prototype.ignoredResources = $util.emptyArray;
+    
+                /**
+                 * DotnetSettings forcedNamespaceAliases.
+                 * @member {Array.<string>} forcedNamespaceAliases
+                 * @memberof google.api.DotnetSettings
+                 * @instance
+                 */
+                DotnetSettings.prototype.forcedNamespaceAliases = $util.emptyArray;
+    
+                /**
+                 * DotnetSettings handwrittenSignatures.
+                 * @member {Array.<string>} handwrittenSignatures
+                 * @memberof google.api.DotnetSettings
+                 * @instance
+                 */
+                DotnetSettings.prototype.handwrittenSignatures = $util.emptyArray;
+    
                 /**
                  * Creates a new DotnetSettings instance using the specified properties.
                  * @function create
@@ -52750,6 +57099,21 @@
                         writer = $Writer.create();
                     if (message.common != null && Object.hasOwnProperty.call(message, "common"))
                         $root.google.api.CommonLanguageSettings.encode(message.common, writer.uint32(/* id 1, wireType 2 =*/10).fork()).ldelim();
+                    if (message.renamedServices != null && Object.hasOwnProperty.call(message, "renamedServices"))
+                        for (var keys = Object.keys(message.renamedServices), i = 0; i < keys.length; ++i)
+                            writer.uint32(/* id 2, wireType 2 =*/18).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]).uint32(/* id 2, wireType 2 =*/18).string(message.renamedServices[keys[i]]).ldelim();
+                    if (message.renamedResources != null && Object.hasOwnProperty.call(message, "renamedResources"))
+                        for (var keys = Object.keys(message.renamedResources), i = 0; i < keys.length; ++i)
+                            writer.uint32(/* id 3, wireType 2 =*/26).fork().uint32(/* id 1, wireType 2 =*/10).string(keys[i]).uint32(/* id 2, wireType 2 =*/18).string(message.renamedResources[keys[i]]).ldelim();
+                    if (message.ignoredResources != null && message.ignoredResources.length)
+                        for (var i = 0; i < message.ignoredResources.length; ++i)
+                            writer.uint32(/* id 4, wireType 2 =*/34).string(message.ignoredResources[i]);
+                    if (message.forcedNamespaceAliases != null && message.forcedNamespaceAliases.length)
+                        for (var i = 0; i < message.forcedNamespaceAliases.length; ++i)
+                            writer.uint32(/* id 5, wireType 2 =*/42).string(message.forcedNamespaceAliases[i]);
+                    if (message.handwrittenSignatures != null && message.handwrittenSignatures.length)
+                        for (var i = 0; i < message.handwrittenSignatures.length; ++i)
+                            writer.uint32(/* id 6, wireType 2 =*/50).string(message.handwrittenSignatures[i]);
                     return writer;
                 };
     
@@ -52780,7 +57144,7 @@
                 DotnetSettings.decode = function decode(reader, length) {
                     if (!(reader instanceof $Reader))
                         reader = $Reader.create(reader);
-                    var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.api.DotnetSettings();
+                    var end = length === undefined ? reader.len : reader.pos + length, message = new $root.google.api.DotnetSettings(), key, value;
                     while (reader.pos < end) {
                         var tag = reader.uint32();
                         switch (tag >>> 3) {
@@ -52788,6 +57152,70 @@
                                 message.common = $root.google.api.CommonLanguageSettings.decode(reader, reader.uint32());
                                 break;
                             }
+                        case 2: {
+                                if (message.renamedServices === $util.emptyObject)
+                                    message.renamedServices = {};
+                                var end2 = reader.uint32() + reader.pos;
+                                key = "";
+                                value = "";
+                                while (reader.pos < end2) {
+                                    var tag2 = reader.uint32();
+                                    switch (tag2 >>> 3) {
+                                    case 1:
+                                        key = reader.string();
+                                        break;
+                                    case 2:
+                                        value = reader.string();
+                                        break;
+                                    default:
+                                        reader.skipType(tag2 & 7);
+                                        break;
+                                    }
+                                }
+                                message.renamedServices[key] = value;
+                                break;
+                            }
+                        case 3: {
+                                if (message.renamedResources === $util.emptyObject)
+                                    message.renamedResources = {};
+                                var end2 = reader.uint32() + reader.pos;
+                                key = "";
+                                value = "";
+                                while (reader.pos < end2) {
+                                    var tag2 = reader.uint32();
+                                    switch (tag2 >>> 3) {
+                                    case 1:
+                                        key = reader.string();
+                                        break;
+                                    case 2:
+                                        value = reader.string();
+                                        break;
+                                    default:
+                                        reader.skipType(tag2 & 7);
+                                        break;
+                                    }
+                                }
+                                message.renamedResources[key] = value;
+                                break;
+                            }
+                        case 4: {
+                                if (!(message.ignoredResources && message.ignoredResources.length))
+                                    message.ignoredResources = [];
+                                message.ignoredResources.push(reader.string());
+                                break;
+                            }
+                        case 5: {
+                                if (!(message.forcedNamespaceAliases && message.forcedNamespaceAliases.length))
+                                    message.forcedNamespaceAliases = [];
+                                message.forcedNamespaceAliases.push(reader.string());
+                                break;
+                            }
+                        case 6: {
+                                if (!(message.handwrittenSignatures && message.handwrittenSignatures.length))
+                                    message.handwrittenSignatures = [];
+                                message.handwrittenSignatures.push(reader.string());
+                                break;
+                            }
                         default:
                             reader.skipType(tag & 7);
                             break;
@@ -52828,6 +57256,43 @@
                         if (error)
                             return "common." + error;
                     }
+                    if (message.renamedServices != null && message.hasOwnProperty("renamedServices")) {
+                        if (!$util.isObject(message.renamedServices))
+                            return "renamedServices: object expected";
+                        var key = Object.keys(message.renamedServices);
+                        for (var i = 0; i < key.length; ++i)
+                            if (!$util.isString(message.renamedServices[key[i]]))
+                                return "renamedServices: string{k:string} expected";
+                    }
+                    if (message.renamedResources != null && message.hasOwnProperty("renamedResources")) {
+                        if (!$util.isObject(message.renamedResources))
+                            return "renamedResources: object expected";
+                        var key = Object.keys(message.renamedResources);
+                        for (var i = 0; i < key.length; ++i)
+                            if (!$util.isString(message.renamedResources[key[i]]))
+                                return "renamedResources: string{k:string} expected";
+                    }
+                    if (message.ignoredResources != null && message.hasOwnProperty("ignoredResources")) {
+                        if (!Array.isArray(message.ignoredResources))
+                            return "ignoredResources: array expected";
+                        for (var i = 0; i < message.ignoredResources.length; ++i)
+                            if (!$util.isString(message.ignoredResources[i]))
+                                return "ignoredResources: string[] expected";
+                    }
+                    if (message.forcedNamespaceAliases != null && message.hasOwnProperty("forcedNamespaceAliases")) {
+                        if (!Array.isArray(message.forcedNamespaceAliases))
+                            return "forcedNamespaceAliases: array expected";
+                        for (var i = 0; i < message.forcedNamespaceAliases.length; ++i)
+                            if (!$util.isString(message.forcedNamespaceAliases[i]))
+                                return "forcedNamespaceAliases: string[] expected";
+                    }
+                    if (message.handwrittenSignatures != null && message.hasOwnProperty("handwrittenSignatures")) {
+                        if (!Array.isArray(message.handwrittenSignatures))
+                            return "handwrittenSignatures: array expected";
+                        for (var i = 0; i < message.handwrittenSignatures.length; ++i)
+                            if (!$util.isString(message.handwrittenSignatures[i]))
+                                return "handwrittenSignatures: string[] expected";
+                    }
                     return null;
                 };
     
@@ -52848,6 +57313,41 @@
                             throw TypeError(".google.api.DotnetSettings.common: object expected");
                         message.common = $root.google.api.CommonLanguageSettings.fromObject(object.common);
                     }
+                    if (object.renamedServices) {
+                        if (typeof object.renamedServices !== "object")
+                            throw TypeError(".google.api.DotnetSettings.renamedServices: object expected");
+                        message.renamedServices = {};
+                        for (var keys = Object.keys(object.renamedServices), i = 0; i < keys.length; ++i)
+                            message.renamedServices[keys[i]] = String(object.renamedServices[keys[i]]);
+                    }
+                    if (object.renamedResources) {
+                        if (typeof object.renamedResources !== "object")
+                            throw TypeError(".google.api.DotnetSettings.renamedResources: object expected");
+                        message.renamedResources = {};
+                        for (var keys = Object.keys(object.renamedResources), i = 0; i < keys.length; ++i)
+                            message.renamedResources[keys[i]] = String(object.renamedResources[keys[i]]);
+                    }
+                    if (object.ignoredResources) {
+                        if (!Array.isArray(object.ignoredResources))
+                            throw TypeError(".google.api.DotnetSettings.ignoredResources: array expected");
+                        message.ignoredResources = [];
+                        for (var i = 0; i < object.ignoredResources.length; ++i)
+                            message.ignoredResources[i] = String(object.ignoredResources[i]);
+                    }
+                    if (object.forcedNamespaceAliases) {
+                        if (!Array.isArray(object.forcedNamespaceAliases))
+                            throw TypeError(".google.api.DotnetSettings.forcedNamespaceAliases: array expected");
+                        message.forcedNamespaceAliases = [];
+                        for (var i = 0; i < object.forcedNamespaceAliases.length; ++i)
+                            message.forcedNamespaceAliases[i] = String(object.forcedNamespaceAliases[i]);
+                    }
+                    if (object.handwrittenSignatures) {
+                        if (!Array.isArray(object.handwrittenSignatures))
+                            throw TypeError(".google.api.DotnetSettings.handwrittenSignatures: array expected");
+                        message.handwrittenSignatures = [];
+                        for (var i = 0; i < object.handwrittenSignatures.length; ++i)
+                            message.handwrittenSignatures[i] = String(object.handwrittenSignatures[i]);
+                    }
                     return message;
                 };
     
@@ -52864,10 +57364,45 @@
                     if (!options)
                         options = {};
                     var object = {};
+                    if (options.arrays || options.defaults) {
+                        object.ignoredResources = [];
+                        object.forcedNamespaceAliases = [];
+                        object.handwrittenSignatures = [];
+                    }
+                    if (options.objects || options.defaults) {
+                        object.renamedServices = {};
+                        object.renamedResources = {};
+                    }
                     if (options.defaults)
                         object.common = null;
                     if (message.common != null && message.hasOwnProperty("common"))
                         object.common = $root.google.api.CommonLanguageSettings.toObject(message.common, options);
+                    var keys2;
+                    if (message.renamedServices && (keys2 = Object.keys(message.renamedServices)).length) {
+                        object.renamedServices = {};
+                        for (var j = 0; j < keys2.length; ++j)
+                            object.renamedServices[keys2[j]] = message.renamedServices[keys2[j]];
+                    }
+                    if (message.renamedResources && (keys2 = Object.keys(message.renamedResources)).length) {
+                        object.renamedResources = {};
+                        for (var j = 0; j < keys2.length; ++j)
+                            object.renamedResources[keys2[j]] = message.renamedResources[keys2[j]];
+                    }
+                    if (message.ignoredResources && message.ignoredResources.length) {
+                        object.ignoredResources = [];
+                        for (var j = 0; j < message.ignoredResources.length; ++j)
+                            object.ignoredResources[j] = message.ignoredResources[j];
+                    }
+                    if (message.forcedNamespaceAliases && message.forcedNamespaceAliases.length) {
+                        object.forcedNamespaceAliases = [];
+                        for (var j = 0; j < message.forcedNamespaceAliases.length; ++j)
+                            object.forcedNamespaceAliases[j] = message.forcedNamespaceAliases[j];
+                    }
+                    if (message.handwrittenSignatures && message.handwrittenSignatures.length) {
+                        object.handwrittenSignatures = [];
+                        for (var j = 0; j < message.handwrittenSignatures.length; ++j)
+                            object.handwrittenSignatures[j] = message.handwrittenSignatures[j];
+                    }
                     return object;
                 };
     
@@ -53845,6 +58380,9 @@
              * @property {number} ADS=2 ADS value
              * @property {number} PHOTOS=3 PHOTOS value
              * @property {number} STREET_VIEW=4 STREET_VIEW value
+             * @property {number} SHOPPING=5 SHOPPING value
+             * @property {number} GEO=6 GEO value
+             * @property {number} GENERATIVE_AI=7 GENERATIVE_AI value
              */
             api.ClientLibraryOrganization = (function() {
                 var valuesById = {}, values = Object.create(valuesById);
@@ -53853,6 +58391,9 @@
                 values[valuesById[2] = "ADS"] = 2;
                 values[valuesById[3] = "PHOTOS"] = 3;
                 values[valuesById[4] = "STREET_VIEW"] = 4;
+                values[valuesById[5] = "SHOPPING"] = 5;
+                values[valuesById[6] = "GEO"] = 6;
+                values[valuesById[7] = "GENERATIVE_AI"] = 7;
                 return values;
             })();
     
diff --git a/protos/protos.json b/protos/protos.json
index a1e9da641..64a1319ec 100644
--- a/protos/protos.json
+++ b/protos/protos.json
@@ -191,6 +191,25 @@
                   "rule": "repeated",
                   "type": "UninterpretedOption",
                   "id": 999
+                },
+                "declaration": {
+                  "rule": "repeated",
+                  "type": "Declaration",
+                  "id": 2,
+                  "options": {
+                    "retention": "RETENTION_SOURCE"
+                  }
+                },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 50
+                },
+                "verification": {
+                  "type": "VerificationState",
+                  "id": 3,
+                  "options": {
+                    "default": "UNVERIFIED"
+                  }
                 }
               },
               "extensions": [
@@ -198,7 +217,45 @@
                   1000,
                   536870911
                 ]
-              ]
+              ],
+              "nested": {
+                "Declaration": {
+                  "fields": {
+                    "number": {
+                      "type": "int32",
+                      "id": 1
+                    },
+                    "fullName": {
+                      "type": "string",
+                      "id": 2
+                    },
+                    "type": {
+                      "type": "string",
+                      "id": 3
+                    },
+                    "reserved": {
+                      "type": "bool",
+                      "id": 5
+                    },
+                    "repeated": {
+                      "type": "bool",
+                      "id": 6
+                    }
+                  },
+                  "reserved": [
+                    [
+                      4,
+                      4
+                    ]
+                  ]
+                },
+                "VerificationState": {
+                  "values": {
+                    "DECLARATION": 0,
+                    "UNVERIFIED": 1
+                  }
+                }
+              }
             },
             "FieldDescriptorProto": {
               "fields": {
@@ -511,6 +568,10 @@
                   "type": "string",
                   "id": 45
                 },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 50
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -573,6 +634,10 @@
                     "deprecated": true
                   }
                 },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 12
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -667,9 +732,22 @@
                   "type": "OptionRetention",
                   "id": 17
                 },
-                "target": {
+                "targets": {
+                  "rule": "repeated",
                   "type": "OptionTargetType",
-                  "id": 18
+                  "id": 19,
+                  "options": {
+                    "packed": false
+                  }
+                },
+                "editionDefaults": {
+                  "rule": "repeated",
+                  "type": "EditionDefault",
+                  "id": 20
+                },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 21
                 },
                 "uninterpretedOption": {
                   "rule": "repeated",
@@ -687,6 +765,10 @@
                 [
                   4,
                   4
+                ],
+                [
+                  18,
+                  18
                 ]
               ],
               "nested": {
@@ -724,11 +806,27 @@
                     "TARGET_TYPE_SERVICE": 8,
                     "TARGET_TYPE_METHOD": 9
                   }
+                },
+                "EditionDefault": {
+                  "fields": {
+                    "edition": {
+                      "type": "string",
+                      "id": 1
+                    },
+                    "value": {
+                      "type": "string",
+                      "id": 2
+                    }
+                  }
                 }
               }
             },
             "OneofOptions": {
               "fields": {
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 1
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -762,6 +860,10 @@
                     "deprecated": true
                   }
                 },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 7
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -790,6 +892,17 @@
                     "default": false
                   }
                 },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 2
+                },
+                "debugRedact": {
+                  "type": "bool",
+                  "id": 3,
+                  "options": {
+                    "default": false
+                  }
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -805,6 +918,10 @@
             },
             "ServiceOptions": {
               "fields": {
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 34
+                },
                 "deprecated": {
                   "type": "bool",
                   "id": 33,
@@ -841,6 +958,10 @@
                     "default": "IDEMPOTENCY_UNKNOWN"
                   }
                 },
+                "features": {
+                  "type": "FeatureSet",
+                  "id": 35
+                },
                 "uninterpretedOption": {
                   "rule": "repeated",
                   "type": "UninterpretedOption",
@@ -912,6 +1033,137 @@
                 }
               }
             },
+            "FeatureSet": {
+              "fields": {
+                "fieldPresence": {
+                  "type": "FieldPresence",
+                  "id": 1,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "EXPLICIT"
+                  }
+                },
+                "enumType": {
+                  "type": "EnumType",
+                  "id": 2,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "OPEN"
+                  }
+                },
+                "repeatedFieldEncoding": {
+                  "type": "RepeatedFieldEncoding",
+                  "id": 3,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "PACKED"
+                  }
+                },
+                "stringFieldValidation": {
+                  "type": "StringFieldValidation",
+                  "id": 4,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "MANDATORY"
+                  }
+                },
+                "messageEncoding": {
+                  "type": "MessageEncoding",
+                  "id": 5,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "LENGTH_PREFIXED"
+                  }
+                },
+                "jsonFormat": {
+                  "type": "JsonFormat",
+                  "id": 6,
+                  "options": {
+                    "retention": "RETENTION_RUNTIME",
+                    "targets": "TARGET_TYPE_FILE",
+                    "edition_defaults.edition": "2023",
+                    "edition_defaults.value": "ALLOW"
+                  }
+                },
+                "rawFeatures": {
+                  "type": "FeatureSet",
+                  "id": 999,
+                  "options": {
+                    "targets": "TARGET_TYPE_UNKNOWN"
+                  }
+                }
+              },
+              "extensions": [
+                [
+                  1000,
+                  1000
+                ],
+                [
+                  1001,
+                  1001
+                ],
+                [
+                  9995,
+                  9999
+                ]
+              ],
+              "nested": {
+                "FieldPresence": {
+                  "values": {
+                    "FIELD_PRESENCE_UNKNOWN": 0,
+                    "EXPLICIT": 1,
+                    "IMPLICIT": 2,
+                    "LEGACY_REQUIRED": 3
+                  }
+                },
+                "EnumType": {
+                  "values": {
+                    "ENUM_TYPE_UNKNOWN": 0,
+                    "OPEN": 1,
+                    "CLOSED": 2
+                  }
+                },
+                "RepeatedFieldEncoding": {
+                  "values": {
+                    "REPEATED_FIELD_ENCODING_UNKNOWN": 0,
+                    "PACKED": 1,
+                    "EXPANDED": 2
+                  }
+                },
+                "StringFieldValidation": {
+                  "values": {
+                    "STRING_FIELD_VALIDATION_UNKNOWN": 0,
+                    "MANDATORY": 1,
+                    "HINT": 2,
+                    "NONE": 3
+                  }
+                },
+                "MessageEncoding": {
+                  "values": {
+                    "MESSAGE_ENCODING_UNKNOWN": 0,
+                    "LENGTH_PREFIXED": 1,
+                    "DELIMITED": 2
+                  }
+                },
+                "JsonFormat": {
+                  "values": {
+                    "JSON_FORMAT_UNKNOWN": 0,
+                    "ALLOW": 1,
+                    "LEGACY_BEST_EFFORT": 2
+                  }
+                }
+              }
+            },
             "SourceCodeInfo": {
               "fields": {
                 "location": {
@@ -3300,6 +3552,78 @@
                             }
                           }
                         },
+                        "AutoscalingConfig": {
+                          "fields": {
+                            "autoscalingLimits": {
+                              "type": "AutoscalingLimits",
+                              "id": 1,
+                              "options": {
+                                "(google.api.field_behavior)": "REQUIRED"
+                              }
+                            },
+                            "autoscalingTargets": {
+                              "type": "AutoscalingTargets",
+                              "id": 2,
+                              "options": {
+                                "(google.api.field_behavior)": "REQUIRED"
+                              }
+                            }
+                          },
+                          "nested": {
+                            "AutoscalingLimits": {
+                              "oneofs": {
+                                "minLimit": {
+                                  "oneof": [
+                                    "minNodes",
+                                    "minProcessingUnits"
+                                  ]
+                                },
+                                "maxLimit": {
+                                  "oneof": [
+                                    "maxNodes",
+                                    "maxProcessingUnits"
+                                  ]
+                                }
+                              },
+                              "fields": {
+                                "minNodes": {
+                                  "type": "int32",
+                                  "id": 1
+                                },
+                                "minProcessingUnits": {
+                                  "type": "int32",
+                                  "id": 2
+                                },
+                                "maxNodes": {
+                                  "type": "int32",
+                                  "id": 3
+                                },
+                                "maxProcessingUnits": {
+                                  "type": "int32",
+                                  "id": 4
+                                }
+                              }
+                            },
+                            "AutoscalingTargets": {
+                              "fields": {
+                                "highPriorityCpuUtilizationPercent": {
+                                  "type": "int32",
+                                  "id": 1,
+                                  "options": {
+                                    "(google.api.field_behavior)": "REQUIRED"
+                                  }
+                                },
+                                "storageUtilizationPercent": {
+                                  "type": "int32",
+                                  "id": 2,
+                                  "options": {
+                                    "(google.api.field_behavior)": "REQUIRED"
+                                  }
+                                }
+                              }
+                            }
+                          }
+                        },
                         "Instance": {
                           "options": {
                             "(google.api.resource).type": "spanner.googleapis.com/Instance",
@@ -3336,6 +3660,13 @@
                               "type": "int32",
                               "id": 9
                             },
+                            "autoscalingConfig": {
+                              "type": "AutoscalingConfig",
+                              "id": 17,
+                              "options": {
+                                "(google.api.field_behavior)": "OPTIONAL"
+                              }
+                            },
                             "state": {
                               "type": "State",
                               "id": 6,
@@ -4238,7 +4569,8 @@
                   "values": {
                     "TYPE_ANNOTATION_CODE_UNSPECIFIED": 0,
                     "PG_NUMERIC": 2,
-                    "PG_JSONB": 3
+                    "PG_JSONB": 3,
+                    "PG_OID": 4
                   }
                 },
                 "Spanner": {
@@ -4517,6 +4849,27 @@
                           }
                         }
                       ]
+                    },
+                    "BatchWrite": {
+                      "requestType": "BatchWriteRequest",
+                      "responseType": "BatchWriteResponse",
+                      "responseStream": true,
+                      "options": {
+                        "(google.api.http).post": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:batchWrite",
+                        "(google.api.http).body": "*",
+                        "(google.api.method_signature)": "session,mutation_groups"
+                      },
+                      "parsedOptions": [
+                        {
+                          "(google.api.http)": {
+                            "post": "/v1/{session=projects/*/instances/*/databases/*/sessions/*}:batchWrite",
+                            "body": "*"
+                          }
+                        },
+                        {
+                          "(google.api.method_signature)": "session,mutation_groups"
+                        }
+                      ]
                     }
                   }
                 },
@@ -4696,6 +5049,71 @@
                     }
                   }
                 },
+                "DirectedReadOptions": {
+                  "oneofs": {
+                    "replicas": {
+                      "oneof": [
+                        "includeReplicas",
+                        "excludeReplicas"
+                      ]
+                    }
+                  },
+                  "fields": {
+                    "includeReplicas": {
+                      "type": "IncludeReplicas",
+                      "id": 1
+                    },
+                    "excludeReplicas": {
+                      "type": "ExcludeReplicas",
+                      "id": 2
+                    }
+                  },
+                  "nested": {
+                    "ReplicaSelection": {
+                      "fields": {
+                        "location": {
+                          "type": "string",
+                          "id": 1
+                        },
+                        "type": {
+                          "type": "Type",
+                          "id": 2
+                        }
+                      },
+                      "nested": {
+                        "Type": {
+                          "values": {
+                            "TYPE_UNSPECIFIED": 0,
+                            "READ_WRITE": 1,
+                            "READ_ONLY": 2
+                          }
+                        }
+                      }
+                    },
+                    "IncludeReplicas": {
+                      "fields": {
+                        "replicaSelections": {
+                          "rule": "repeated",
+                          "type": "ReplicaSelection",
+                          "id": 1
+                        },
+                        "autoFailoverDisabled": {
+                          "type": "bool",
+                          "id": 2
+                        }
+                      }
+                    },
+                    "ExcludeReplicas": {
+                      "fields": {
+                        "replicaSelections": {
+                          "rule": "repeated",
+                          "type": "ReplicaSelection",
+                          "id": 1
+                        }
+                      }
+                    }
+                  }
+                },
                 "ExecuteSqlRequest": {
                   "fields": {
                     "session": {
@@ -4750,6 +5168,10 @@
                       "type": "RequestOptions",
                       "id": 11
                     },
+                    "directedReadOptions": {
+                      "type": "DirectedReadOptions",
+                      "id": 15
+                    },
                     "dataBoostEnabled": {
                       "type": "bool",
                       "id": 16
@@ -5018,6 +5440,10 @@
                       "type": "RequestOptions",
                       "id": 11
                     },
+                    "directedReadOptions": {
+                      "type": "DirectedReadOptions",
+                      "id": 14
+                    },
                     "dataBoostEnabled": {
                       "type": "bool",
                       "id": 15
@@ -5106,6 +5532,61 @@
                       }
                     }
                   }
+                },
+                "BatchWriteRequest": {
+                  "fields": {
+                    "session": {
+                      "type": "string",
+                      "id": 1,
+                      "options": {
+                        "(google.api.field_behavior)": "REQUIRED",
+                        "(google.api.resource_reference).type": "spanner.googleapis.com/Session"
+                      }
+                    },
+                    "requestOptions": {
+                      "type": "RequestOptions",
+                      "id": 3
+                    },
+                    "mutationGroups": {
+                      "rule": "repeated",
+                      "type": "MutationGroup",
+                      "id": 4,
+                      "options": {
+                        "(google.api.field_behavior)": "REQUIRED"
+                      }
+                    }
+                  },
+                  "nested": {
+                    "MutationGroup": {
+                      "fields": {
+                        "mutations": {
+                          "rule": "repeated",
+                          "type": "Mutation",
+                          "id": 1,
+                          "options": {
+                            "(google.api.field_behavior)": "REQUIRED"
+                          }
+                        }
+                      }
+                    }
+                  }
+                },
+                "BatchWriteResponse": {
+                  "fields": {
+                    "indexes": {
+                      "rule": "repeated",
+                      "type": "int32",
+                      "id": 1
+                    },
+                    "status": {
+                      "type": "google.rpc.Status",
+                      "id": 2
+                    },
+                    "commitTimestamp": {
+                      "type": "google.protobuf.Timestamp",
+                      "id": 3
+                    }
+                  }
                 }
               }
             }
@@ -5423,6 +5904,10 @@
                   "rule": "repeated",
                   "type": "ClientLibrarySettings",
                   "id": 109
+                },
+                "protoReferenceDocumentationUri": {
+                  "type": "string",
+                  "id": 110
                 }
               }
             },
@@ -5480,6 +5965,31 @@
                 "common": {
                   "type": "CommonLanguageSettings",
                   "id": 1
+                },
+                "renamedServices": {
+                  "keyType": "string",
+                  "type": "string",
+                  "id": 2
+                },
+                "renamedResources": {
+                  "keyType": "string",
+                  "type": "string",
+                  "id": 3
+                },
+                "ignoredResources": {
+                  "rule": "repeated",
+                  "type": "string",
+                  "id": 4
+                },
+                "forcedNamespaceAliases": {
+                  "rule": "repeated",
+                  "type": "string",
+                  "id": 5
+                },
+                "handwrittenSignatures": {
+                  "rule": "repeated",
+                  "type": "string",
+                  "id": 6
                 }
               }
             },
@@ -5539,7 +6049,10 @@
                 "CLOUD": 1,
                 "ADS": 2,
                 "PHOTOS": 3,
-                "STREET_VIEW": 4
+                "STREET_VIEW": 4,
+                "SHOPPING": 5,
+                "GEO": 6,
+                "GENERATIVE_AI": 7
               }
             },
             "ClientLibraryDestination": {
@@ -5567,7 +6080,7 @@
           "options": {
             "cc_enable_arenas": true,
             "csharp_namespace": "Google.LongRunning",
-            "go_package": "google.golang.org/genproto/googleapis/longrunning;longrunning",
+            "go_package": "cloud.google.com/go/longrunning/autogen/longrunningpb;longrunningpb",
             "java_multiple_files": true,
             "java_outer_classname": "OperationsProto",
             "java_package": "com.google.longrunning",
@@ -5785,7 +6298,7 @@
               "options": {
                 "cc_enable_arenas": true,
                 "csharp_namespace": "Google.Cloud.Iam.V1",
-                "go_package": "google.golang.org/genproto/googleapis/iam/v1;iam",
+                "go_package": "cloud.google.com/go/iam/apiv1/iampb;iampb",
                 "java_multiple_files": true,
                 "java_outer_classname": "PolicyProto",
                 "java_package": "com.google.iam.v1",
diff --git a/samples/dml.js b/samples/dml.js
index 4ab57147f..dface9327 100644
--- a/samples/dml.js
+++ b/samples/dml.js
@@ -649,12 +649,11 @@ async function insertWithCustomTimeoutAndRetrySettings(
   const spanner = new Spanner({
     projectId: projectId,
   });
-  const DEADLINE_EXCEEDED_STATUS_CODE = 4;
   const UNAVAILABLE_STATUS_CODE = 14;
   const retryAndTimeoutSettings = {
     retry: {
       // The set of error codes that will be retried.
-      retryCodes: [DEADLINE_EXCEEDED_STATUS_CODE, UNAVAILABLE_STATUS_CODE],
+      retryCodes: [UNAVAILABLE_STATUS_CODE],
       backoffSettings: {
         // Configure retry delay settings.
         // The initial amount of time to wait before retrying the request.
@@ -662,7 +661,7 @@ async function insertWithCustomTimeoutAndRetrySettings(
         // The maximum amount of time to wait before retrying. I.e. after this
         // value is reached, the wait time will not increase further by the
         // multiplier.
-        maxRetryDelayMillis: 64000,
+        maxRetryDelayMillis: 16000,
         // The previous wait time is multiplied by this multiplier to come up
         // with the next wait time, until the max is reached.
         retryDelayMultiplier: 1.5,
diff --git a/samples/instance-config-create.js b/samples/instance-config-create.js
index 362e1b928..7ae6cccff 100644
--- a/samples/instance-config-create.js
+++ b/samples/instance-config-create.js
@@ -44,9 +44,8 @@ function main(
     // Creates a new instance config
     const instanceConfig = spanner.instanceConfig(instanceConfigId);
     try {
-      const [baseInstanceConfig] = await spanner.getInstanceConfig(
-        baseInstanceConfigId
-      );
+      const [baseInstanceConfig] =
+        await spanner.getInstanceConfig(baseInstanceConfigId);
       console.log(`Creating instance config ${instanceConfig.formattedName_}.`);
       const [, operation] = await instanceConfig.create({
         displayName: instanceConfigId,
diff --git a/samples/package.json b/samples/package.json
index c384ec6b4..517d392bb 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "@google-cloud/kms": "^4.0.0",
     "@google-cloud/precise-date": "^3.0.0",
-    "@google-cloud/spanner": "^7.0.0",
+    "@google-cloud/spanner": "^7.1.0",
     "yargs": "^17.0.0"
   },
   "devDependencies": {
diff --git a/src/v1/database_admin_client.ts b/src/v1/database_admin_client.ts
index a1fb3a72f..0878c545a 100644
--- a/src/v1/database_admin_client.ts
+++ b/src/v1/database_admin_client.ts
@@ -99,8 +99,7 @@ export class DatabaseAdminClient {
    *     API remote host.
    * @param {gax.ClientConfig} [options.clientConfig] - Client configuration override.
    *     Follows the structure of {@link gapicConfig}.
-   * @param {boolean | "rest"} [options.fallback] - Use HTTP fallback mode.
-   *     Pass "rest" to use HTTP/1.1 REST API instead of gRPC.
+   * @param {boolean} [options.fallback] - Use HTTP/1.1 REST mode.
    *     For more information, please check the
    *     {@link https://github.com/googleapis/gax-nodejs/blob/main/client-libraries.md#http11-rest-api-mode documentation}.
    * @param {gax} [gaxInstance]: loaded instance of `google-gax`. Useful if you
@@ -108,7 +107,7 @@ export class DatabaseAdminClient {
    *     HTTP implementation. Load only fallback version and pass it to the constructor:
    *     ```
    *     const gax = require('google-gax/build/src/fallback'); // avoids loading google-gax with gRPC
-   *     const client = new DatabaseAdminClient({fallback: 'rest'}, gax);
+   *     const client = new DatabaseAdminClient({fallback: true}, gax);
    *     ```
    */
   constructor(
@@ -174,7 +173,7 @@ export class DatabaseAdminClient {
     }
     if (!opts.fallback) {
       clientHeader.push(`grpc/${this._gaxGrpc.grpcVersion}`);
-    } else if (opts.fallback === 'rest') {
+    } else {
       clientHeader.push(`rest/${this._gaxGrpc.grpcVersion}`);
     }
     if (opts.libName && opts.libVersion) {
@@ -243,7 +242,7 @@ export class DatabaseAdminClient {
       auth: this.auth,
       grpc: 'grpc' in this._gaxGrpc ? this._gaxGrpc.grpc : undefined,
     };
-    if (opts.fallback === 'rest') {
+    if (opts.fallback) {
       lroOptions.protoJson = protoFilesRoot;
       lroOptions.httpRules = [
         {
@@ -534,9 +533,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.database.v1.Database | Database}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.database.v1.Database|Database}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getDatabase(
@@ -627,9 +625,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   dropDatabase(
@@ -709,7 +706,7 @@ export class DatabaseAdminClient {
   /**
    * Returns the schema of a Cloud Spanner database as a list of formatted
    * DDL statements. This method does not show pending schema updates, those may
-   * be queried using the {@link google.longrunning.Operations|Operations} API.
+   * be queried using the {@link protos.google.longrunning.Operations|Operations} API.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -720,9 +717,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.database.v1.GetDatabaseDdlResponse | GetDatabaseDdlResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.database.v1.GetDatabaseDdlResponse|GetDatabaseDdlResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getDatabaseDdl(
@@ -810,9 +806,9 @@ export class DatabaseAdminClient {
    * Replaces any existing policy.
    *
    * Authorization requires `spanner.databases.setIamPolicy`
-   * permission on {@link google.iam.v1.SetIamPolicyRequest.resource|resource}.
+   * permission on {@link protos.google.iam.v1.SetIamPolicyRequest.resource|resource}.
    * For backups, authorization requires `spanner.backups.setIamPolicy`
-   * permission on {@link google.iam.v1.SetIamPolicyRequest.resource|resource}.
+   * permission on {@link protos.google.iam.v1.SetIamPolicyRequest.resource|resource}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -833,9 +829,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.Policy | Policy}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.Policy|Policy}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   setIamPolicy(
@@ -910,9 +905,9 @@ export class DatabaseAdminClient {
    * policy set.
    *
    * Authorization requires `spanner.databases.getIamPolicy` permission on
-   * {@link google.iam.v1.GetIamPolicyRequest.resource|resource}.
+   * {@link protos.google.iam.v1.GetIamPolicyRequest.resource|resource}.
    * For backups, authorization requires `spanner.backups.getIamPolicy`
-   * permission on {@link google.iam.v1.GetIamPolicyRequest.resource|resource}.
+   * permission on {@link protos.google.iam.v1.GetIamPolicyRequest.resource|resource}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -925,9 +920,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.Policy | Policy}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.Policy|Policy}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getIamPolicy(
@@ -1021,9 +1015,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.TestIamPermissionsResponse | TestIamPermissionsResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.TestIamPermissionsResponse|TestIamPermissionsResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   testIamPermissions(
@@ -1093,7 +1086,7 @@ export class DatabaseAdminClient {
     return this.innerApiCalls.testIamPermissions(request, options, callback);
   }
   /**
-   * Gets metadata on a pending or completed {@link google.spanner.admin.database.v1.Backup|Backup}.
+   * Gets metadata on a pending or completed {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1104,9 +1097,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.database.v1.Backup | Backup}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getBackup(
@@ -1184,7 +1176,7 @@ export class DatabaseAdminClient {
     return this.innerApiCalls.getBackup(request, options, callback);
   }
   /**
-   * Updates a pending or completed {@link google.spanner.admin.database.v1.Backup|Backup}.
+   * Updates a pending or completed {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1202,9 +1194,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.database.v1.Backup | Backup}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   updateBackup(
@@ -1282,7 +1273,7 @@ export class DatabaseAdminClient {
     return this.innerApiCalls.updateBackup(request, options, callback);
   }
   /**
-   * Deletes a pending or completed {@link google.spanner.admin.database.v1.Backup|Backup}.
+   * Deletes a pending or completed {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1293,9 +1284,8 @@ export class DatabaseAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   deleteBackup(
@@ -1375,13 +1365,13 @@ export class DatabaseAdminClient {
 
   /**
    * Creates a new Cloud Spanner database and starts to prepare it for serving.
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format `<database_name>/operations/<operation_id>` and
    * can be used to track preparation of the database. The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.CreateDatabaseMetadata|CreateDatabaseMetadata}. The
-   * {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.database.v1.Database|Database}, if successful.
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.CreateDatabaseMetadata|CreateDatabaseMetadata}. The
+   * {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.database.v1.Database|Database}, if successful.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1391,7 +1381,7 @@ export class DatabaseAdminClient {
    * @param {string} request.createStatement
    *   Required. A `CREATE DATABASE` statement, which specifies the ID of the
    *   new database.  The database ID must conform to the regular expression
-   *   `{@link a-z0-9_\-|a-z}*[a-z0-9]` and be between 2 and 30 characters in length.
+   *   `{@link protos.a-z0-9_\-|a-z}*[a-z0-9]` and be between 2 and 30 characters in length.
    *   If the database ID is a reserved word or if it contains a hyphen, the
    *   database ID must be enclosed in backticks (`` ` ``).
    * @param {string[]} [request.extraStatements]
@@ -1411,8 +1401,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   createDatabase(
@@ -1505,8 +1494,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkCreateDatabaseProgress(
@@ -1534,18 +1522,18 @@ export class DatabaseAdminClient {
   }
   /**
    * Updates a Cloud Spanner database. The returned
-   * {@link google.longrunning.Operation|long-running operation} can be used to track
+   * {@link protos.google.longrunning.Operation|long-running operation} can be used to track
    * the progress of updating the database. If the named database does not
    * exist, returns `NOT_FOUND`.
    *
    * While the operation is pending:
    *
    *   * The database's
-   *     {@link google.spanner.admin.database.v1.Database.reconciling|reconciling}
+   *     {@link protos.google.spanner.admin.database.v1.Database.reconciling|reconciling}
    *     field is set to true.
    *   * Cancelling the operation is best-effort. If the cancellation succeeds,
    *     the operation metadata's
-   *     {@link google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time|cancel_time}
+   *     {@link protos.google.spanner.admin.database.v1.UpdateDatabaseMetadata.cancel_time|cancel_time}
    *     is set, the updates are reverted, and the operation terminates with a
    *     `CANCELLED` status.
    *   * New UpdateDatabase requests will return a `FAILED_PRECONDITION` error
@@ -1558,17 +1546,17 @@ export class DatabaseAdminClient {
    *
    *   * The new values are in effect and readable via the API.
    *   * The database's
-   *     {@link google.spanner.admin.database.v1.Database.reconciling|reconciling}
+   *     {@link protos.google.spanner.admin.database.v1.Database.reconciling|reconciling}
    *     field becomes false.
    *
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format
    * `projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>`
    * and can be used to track the database modification. The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.UpdateDatabaseMetadata|UpdateDatabaseMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.database.v1.Database|Database}, if successful.
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.UpdateDatabaseMetadata|UpdateDatabaseMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.database.v1.Database|Database}, if successful.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1585,8 +1573,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   updateDatabase(
@@ -1679,8 +1666,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkUpdateDatabaseProgress(
@@ -1709,11 +1695,11 @@ export class DatabaseAdminClient {
   /**
    * Updates the schema of a Cloud Spanner database by
    * creating/altering/dropping tables, columns, indexes, etc. The returned
-   * {@link google.longrunning.Operation|long-running operation} will have a name of
+   * {@link protos.google.longrunning.Operation|long-running operation} will have a name of
    * the format `<database_name>/operations/<operation_id>` and can be used to
    * track execution of the schema change(s). The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata|UpdateDatabaseDdlMetadata}.  The operation has no response.
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata|UpdateDatabaseDdlMetadata}.  The operation has no response.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1725,21 +1711,21 @@ export class DatabaseAdminClient {
    *   If empty, the new update request is assigned an
    *   automatically-generated operation ID. Otherwise, `operation_id`
    *   is used to construct the name of the resulting
-   *   {@link google.longrunning.Operation|Operation}.
+   *   {@link protos.google.longrunning.Operation|Operation}.
    *
    *   Specifying an explicit operation ID simplifies determining
    *   whether the statements were executed in the event that the
-   *   {@link google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl|UpdateDatabaseDdl} call is replayed,
-   *   or the return value is otherwise lost: the {@link google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.database|database} and
+   *   {@link protos.google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl|UpdateDatabaseDdl} call is replayed,
+   *   or the return value is otherwise lost: the {@link protos.google.spanner.admin.database.v1.UpdateDatabaseDdlRequest.database|database} and
    *   `operation_id` fields can be combined to form the
-   *   {@link google.longrunning.Operation.name|name} of the resulting
-   *   {@link google.longrunning.Operation|longrunning.Operation}: `<database>/operations/<operation_id>`.
+   *   {@link protos.google.longrunning.Operation.name|name} of the resulting
+   *   {@link protos.google.longrunning.Operation|longrunning.Operation}: `<database>/operations/<operation_id>`.
    *
    *   `operation_id` should be unique within the database, and must be
-   *   a valid identifier: `{@link a-z0-9_|a-z}*`. Note that
+   *   a valid identifier: `{@link protos.a-z0-9_|a-z}*`. Note that
    *   automatically-generated operation IDs always begin with an
    *   underscore. If the named operation already exists,
-   *   {@link google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl|UpdateDatabaseDdl} returns
+   *   {@link protos.google.spanner.admin.database.v1.DatabaseAdmin.UpdateDatabaseDdl|UpdateDatabaseDdl} returns
    *   `ALREADY_EXISTS`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
@@ -1747,8 +1733,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   updateDatabaseDdl(
@@ -1841,8 +1826,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkUpdateDatabaseDdlProgress(
@@ -1870,14 +1854,14 @@ export class DatabaseAdminClient {
   }
   /**
    * Starts creating a new Cloud Spanner Backup.
-   * The returned backup {@link google.longrunning.Operation|long-running operation}
+   * The returned backup {@link protos.google.longrunning.Operation|long-running operation}
    * will have a name of the format
    * `projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>`
    * and can be used to track creation of the backup. The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}. The
-   * {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.database.v1.Backup|Backup}, if successful. Cancelling the returned operation will stop the
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}. The
+   * {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.database.v1.Backup|Backup}, if successful. Cancelling the returned operation will stop the
    * creation and delete the backup.
    * There can be only one pending backup creation per database. Backup creation
    * of different databases can run concurrently.
@@ -1901,7 +1885,7 @@ export class DatabaseAdminClient {
    *   Optional. The encryption configuration used to encrypt the backup. If this field is
    *   not specified, the backup will use the same
    *   encryption configuration as the database by default, namely
-   *   {@link google.spanner.admin.database.v1.CreateBackupEncryptionConfig.encryption_type|encryption_type} =
+   *   {@link protos.google.spanner.admin.database.v1.CreateBackupEncryptionConfig.encryption_type|encryption_type} =
    *   `USE_DATABASE_ENCRYPTION`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
@@ -1909,8 +1893,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   createBackup(
@@ -2003,8 +1986,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkCreateBackupProgress(
@@ -2032,15 +2014,15 @@ export class DatabaseAdminClient {
   }
   /**
    * Starts copying a Cloud Spanner Backup.
-   * The returned backup {@link google.longrunning.Operation|long-running operation}
+   * The returned backup {@link protos.google.longrunning.Operation|long-running operation}
    * will have a name of the format
    * `projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>`
    * and can be used to track copying of the backup. The operation is associated
    * with the destination backup.
-   * The {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.database.v1.Backup|Backup}, if successful. Cancelling the returned operation will stop the
+   * The {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.database.v1.Backup|Backup}, if successful. Cancelling the returned operation will stop the
    * copying and delete the backup.
    * Concurrent CopyBackup requests can run on the same source backup.
    *
@@ -2070,7 +2052,7 @@ export class DatabaseAdminClient {
    *   Optional. The encryption configuration used to encrypt the backup. If this field is
    *   not specified, the backup will use the same
    *   encryption configuration as the source backup by default, namely
-   *   {@link google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type|encryption_type} =
+   *   {@link protos.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type|encryption_type} =
    *   `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
@@ -2078,8 +2060,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   copyBackup(
@@ -2172,8 +2153,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkCopyBackupProgress(
@@ -2207,10 +2187,10 @@ export class DatabaseAdminClient {
    * operation][google.longrunning.Operation] has a name of the format
    * `projects/<project>/instances/<instance>/databases/<database>/operations/<operation_id>`,
    * and can be used to track the progress of the operation, and to cancel it.
-   * The {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
-   * The {@link google.longrunning.Operation.response|response} type
-   * is {@link google.spanner.admin.database.v1.Database|Database}, if
+   * The {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} type
+   * is {@link protos.google.spanner.admin.database.v1.Database|Database}, if
    * successful. Cancelling the returned operation will stop the restore and
    * delete the database.
    * There can be only one database being restored into an instance at a time.
@@ -2239,7 +2219,7 @@ export class DatabaseAdminClient {
    *   resources in Cloud KMS used to encrypt/decrypt the database to restore to.
    *   If this field is not specified, the restored database will use
    *   the same encryption configuration as the backup by default, namely
-   *   {@link google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig.encryption_type|encryption_type} =
+   *   {@link protos.google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig.encryption_type|encryption_type} =
    *   `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
@@ -2247,8 +2227,7 @@ export class DatabaseAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   restoreDatabase(
@@ -2341,8 +2320,7 @@ export class DatabaseAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkRestoreDatabaseProgress(
@@ -2381,19 +2359,18 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.admin.database.v1.Database | Database}.
+   *   The first element of the array is Array of {@link protos.google.spanner.admin.database.v1.Database|Database}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listDatabasesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabases(
@@ -2483,18 +2460,17 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.admin.database.v1.Database | Database} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.admin.database.v1.Database|Database} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listDatabasesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabasesStream(
@@ -2533,17 +2509,16 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabasesResponse|ListDatabasesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.admin.database.v1.Database | Database}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.admin.database.v1.Database|Database}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabasesAsync(
@@ -2586,7 +2561,7 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
+   *   The following fields in the {@link protos.google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
    *
    *     * `name`
    *     * `database`
@@ -2618,20 +2593,19 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
    *   `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.admin.database.v1.Backup | Backup}.
+   *   The first element of the array is Array of {@link protos.google.spanner.admin.database.v1.Backup|Backup}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listBackupsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackups(
@@ -2725,7 +2699,7 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
+   *   The following fields in the {@link protos.google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
    *
    *     * `name`
    *     * `database`
@@ -2757,19 +2731,18 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
    *   `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.admin.database.v1.Backup | Backup} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.admin.database.v1.Backup|Backup} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listBackupsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackupsStream(
@@ -2812,7 +2785,7 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
+   *   The following fields in the {@link protos.google.spanner.admin.database.v1.Backup|Backup} are eligible for filtering:
    *
    *     * `name`
    *     * `database`
@@ -2844,18 +2817,17 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupsResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListBackupsResponse|ListBackupsResponse} to the same `parent` and with the same
    *   `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.admin.database.v1.Backup | Backup}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.admin.database.v1.Backup|Backup}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackupsAsync(
@@ -2880,11 +2852,11 @@ export class DatabaseAdminClient {
     ) as AsyncIterable<protos.google.spanner.admin.database.v1.IBackup>;
   }
   /**
-   * Lists database {@link google.longrunning.Operation|longrunning-operations}.
+   * Lists database {@link protos.google.longrunning.Operation|longrunning-operations}.
    * A database operation has a name of the form
    * `projects/<project>/instances/<instance>/databases/<database>/operations/<operation>`.
    * The long-running operation
-   * {@link google.longrunning.Operation.metadata|metadata} field type
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type
    * `metadata.type_url` describes the type of the metadata. Operations returned
    * include those that have completed/failed/canceled within the last 7 days,
    * and pending operations.
@@ -2903,13 +2875,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first, if filtering on metadata
@@ -2931,7 +2903,7 @@ export class DatabaseAdminClient {
    *       `(metadata.name:restored_howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
    *       * The database is restored from a backup.
    *       * The backup name contains "backup_howl".
    *       * The restored database's name contains "restored_howl".
@@ -2942,20 +2914,19 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.longrunning.Operation | Operation}.
+   *   The first element of the array is Array of {@link protos.google.longrunning.Operation|Operation}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listDatabaseOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseOperations(
@@ -3053,13 +3024,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first, if filtering on metadata
@@ -3081,7 +3052,7 @@ export class DatabaseAdminClient {
    *       `(metadata.name:restored_howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
    *       * The database is restored from a backup.
    *       * The backup name contains "backup_howl".
    *       * The restored database's name contains "restored_howl".
@@ -3092,19 +3063,18 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.longrunning.Operation | Operation} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.longrunning.Operation|Operation} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listDatabaseOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseOperationsStream(
@@ -3147,13 +3117,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first, if filtering on metadata
@@ -3175,7 +3145,7 @@ export class DatabaseAdminClient {
    *       `(metadata.name:restored_howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.RestoreDatabaseMetadata|RestoreDatabaseMetadata}.
    *       * The database is restored from a backup.
    *       * The backup name contains "backup_howl".
    *       * The restored database's name contains "restored_howl".
@@ -3186,18 +3156,17 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListDatabaseOperationsResponse|ListDatabaseOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.longrunning.Operation | Operation}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.longrunning.Operation|Operation}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseOperationsAsync(
@@ -3222,11 +3191,11 @@ export class DatabaseAdminClient {
     ) as AsyncIterable<protos.google.longrunning.IOperation>;
   }
   /**
-   * Lists the backup {@link google.longrunning.Operation|long-running operations} in
+   * Lists the backup {@link protos.google.longrunning.Operation|long-running operations} in
    * the given instance. A backup operation has a name of the form
    * `projects/<project>/instances/<instance>/backups/<backup>/operations/<operation>`.
    * The long-running operation
-   * {@link google.longrunning.Operation.metadata|metadata} field type
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type
    * `metadata.type_url` describes the type of the metadata. Operations returned
    * include those that have completed/failed/canceled within the last 7 days,
    * and pending operations. Operations returned are ordered by
@@ -3247,13 +3216,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first if filtering on metadata
@@ -3271,14 +3240,14 @@ export class DatabaseAdminClient {
    *     * `done:true` - The operation is complete.
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *        `metadata.database:prod` - Returns operations where:
-   *        * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *        * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *        * The database the backup was taken from has a name containing the
    *        string "prod".
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *       `(metadata.name:howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *       * The backup name contains the string "howl".
    *       * The operation started before 2018-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -3286,7 +3255,7 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test) AND` \
    *       `(metadata.progress.start_time < \"2022-01-18T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
    *       * The source backup of the copied backup name contains the string
    *       "test".
    *       * The operation started before 2022-01-18T14:50:00Z.
@@ -3298,10 +3267,10 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test_bkp)) AND` \
    *       `(error:*)` - Returns operations where:
    *       * The operation's metadata matches either of criteria:
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
    *         database the backup was taken from has name containing string
    *         "test_db"
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
    *         backup the backup was copied from has name containing string
    *         "test_bkp"
    *       * The operation resulted in an error.
@@ -3310,20 +3279,19 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.longrunning.Operation | Operation}.
+   *   The first element of the array is Array of {@link protos.google.longrunning.Operation|Operation}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listBackupOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackupOperations(
@@ -3417,13 +3385,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first if filtering on metadata
@@ -3441,14 +3409,14 @@ export class DatabaseAdminClient {
    *     * `done:true` - The operation is complete.
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *        `metadata.database:prod` - Returns operations where:
-   *        * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *        * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *        * The database the backup was taken from has a name containing the
    *        string "prod".
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *       `(metadata.name:howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *       * The backup name contains the string "howl".
    *       * The operation started before 2018-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -3456,7 +3424,7 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test) AND` \
    *       `(metadata.progress.start_time < \"2022-01-18T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
    *       * The source backup of the copied backup name contains the string
    *       "test".
    *       * The operation started before 2022-01-18T14:50:00Z.
@@ -3468,10 +3436,10 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test_bkp)) AND` \
    *       `(error:*)` - Returns operations where:
    *       * The operation's metadata matches either of criteria:
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
    *         database the backup was taken from has name containing string
    *         "test_db"
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
    *         backup the backup was copied from has name containing string
    *         "test_bkp"
    *       * The operation resulted in an error.
@@ -3480,19 +3448,18 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.longrunning.Operation | Operation} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.longrunning.Operation|Operation} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listBackupOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackupOperationsStream(
@@ -3535,13 +3502,13 @@ export class DatabaseAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
-   *        for {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
+   *        for {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} is
    *        `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
    *        `metadata.@type` must be specified first if filtering on metadata
@@ -3559,14 +3526,14 @@ export class DatabaseAdminClient {
    *     * `done:true` - The operation is complete.
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *        `metadata.database:prod` - Returns operations where:
-   *        * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *        * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *        * The database the backup was taken from has a name containing the
    *        string "prod".
    *     * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
    *       `(metadata.name:howl) AND` \
    *       `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata}.
    *       * The backup name contains the string "howl".
    *       * The operation started before 2018-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -3574,7 +3541,7 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test) AND` \
    *       `(metadata.progress.start_time < \"2022-01-18T14:50:00Z\") AND` \
    *       `(error:*)` - Returns operations where:
-   *       * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
+   *       * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata}.
    *       * The source backup of the copied backup name contains the string
    *       "test".
    *       * The operation started before 2022-01-18T14:50:00Z.
@@ -3586,10 +3553,10 @@ export class DatabaseAdminClient {
    *       `(metadata.source_backup:test_bkp)) AND` \
    *       `(error:*)` - Returns operations where:
    *       * The operation's metadata matches either of criteria:
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CreateBackupMetadata|CreateBackupMetadata} AND the
    *         database the backup was taken from has name containing string
    *         "test_db"
-   *         * The operation's metadata type is {@link google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
+   *         * The operation's metadata type is {@link protos.google.spanner.admin.database.v1.CopyBackupMetadata|CopyBackupMetadata} AND the
    *         backup the backup was copied from has name containing string
    *         "test_bkp"
    *       * The operation resulted in an error.
@@ -3598,18 +3565,17 @@ export class DatabaseAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
-   *   from a previous {@link google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
+   *   {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse.next_page_token|next_page_token}
+   *   from a previous {@link protos.google.spanner.admin.database.v1.ListBackupOperationsResponse|ListBackupOperationsResponse} to the
    *   same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.longrunning.Operation | Operation}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.longrunning.Operation|Operation}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listBackupOperationsAsync(
@@ -3647,19 +3613,18 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.admin.database.v1.DatabaseRole | DatabaseRole}.
+   *   The first element of the array is Array of {@link protos.google.spanner.admin.database.v1.DatabaseRole|DatabaseRole}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listDatabaseRolesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseRoles(
@@ -3750,18 +3715,17 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.admin.database.v1.DatabaseRole | DatabaseRole} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.admin.database.v1.DatabaseRole|DatabaseRole} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listDatabaseRolesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseRolesStream(
@@ -3801,17 +3765,16 @@ export class DatabaseAdminClient {
    *   defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
-   *   previous {@link google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
+   *   {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse.next_page_token|next_page_token} from a
+   *   previous {@link protos.google.spanner.admin.database.v1.ListDatabaseRolesResponse|ListDatabaseRolesResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.admin.database.v1.DatabaseRole | DatabaseRole}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.admin.database.v1.DatabaseRole|DatabaseRole}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listDatabaseRolesAsync(
diff --git a/src/v1/instance_admin_client.ts b/src/v1/instance_admin_client.ts
index 656d4246d..966a4630a 100644
--- a/src/v1/instance_admin_client.ts
+++ b/src/v1/instance_admin_client.ts
@@ -113,8 +113,7 @@ export class InstanceAdminClient {
    *     API remote host.
    * @param {gax.ClientConfig} [options.clientConfig] - Client configuration override.
    *     Follows the structure of {@link gapicConfig}.
-   * @param {boolean | "rest"} [options.fallback] - Use HTTP fallback mode.
-   *     Pass "rest" to use HTTP/1.1 REST API instead of gRPC.
+   * @param {boolean} [options.fallback] - Use HTTP/1.1 REST mode.
    *     For more information, please check the
    *     {@link https://github.com/googleapis/gax-nodejs/blob/main/client-libraries.md#http11-rest-api-mode documentation}.
    * @param {gax} [gaxInstance]: loaded instance of `google-gax`. Useful if you
@@ -122,7 +121,7 @@ export class InstanceAdminClient {
    *     HTTP implementation. Load only fallback version and pass it to the constructor:
    *     ```
    *     const gax = require('google-gax/build/src/fallback'); // avoids loading google-gax with gRPC
-   *     const client = new InstanceAdminClient({fallback: 'rest'}, gax);
+   *     const client = new InstanceAdminClient({fallback: true}, gax);
    *     ```
    */
   constructor(
@@ -188,7 +187,7 @@ export class InstanceAdminClient {
     }
     if (!opts.fallback) {
       clientHeader.push(`grpc/${this._gaxGrpc.grpcVersion}`);
-    } else if (opts.fallback === 'rest') {
+    } else {
       clientHeader.push(`rest/${this._gaxGrpc.grpcVersion}`);
     }
     if (opts.libName && opts.libVersion) {
@@ -241,7 +240,7 @@ export class InstanceAdminClient {
       auth: this.auth,
       grpc: 'grpc' in this._gaxGrpc ? this._gaxGrpc.grpc : undefined,
     };
-    if (opts.fallback === 'rest') {
+    if (opts.fallback) {
       lroOptions.protoJson = protoFilesRoot;
       lroOptions.httpRules = [
         {
@@ -489,9 +488,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.instance.v1.InstanceConfig | InstanceConfig}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getInstanceConfig(
@@ -582,7 +580,7 @@ export class InstanceAdminClient {
    * Only user managed configurations can be deleted.
    *
    * Authorization requires `spanner.instanceConfigs.delete` permission on
-   * the resource {@link google.spanner.admin.instance.v1.InstanceConfig.name|name}.
+   * the resource {@link protos.google.spanner.admin.instance.v1.InstanceConfig.name|name}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -604,9 +602,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   deleteInstanceConfig(
@@ -699,15 +696,14 @@ export class InstanceAdminClient {
    *   `projects/<project>/instances/<instance>`.
    * @param {google.protobuf.FieldMask} request.fieldMask
    *   If field_mask is present, specifies the subset of
-   *   {@link google.spanner.admin.instance.v1.Instance|Instance} fields that should be
+   *   {@link protos.google.spanner.admin.instance.v1.Instance|Instance} fields that should be
    *   returned. If absent, all
-   *   {@link google.spanner.admin.instance.v1.Instance|Instance} fields are returned.
+   *   {@link protos.google.spanner.admin.instance.v1.Instance|Instance} fields are returned.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.admin.instance.v1.Instance | Instance}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.admin.instance.v1.Instance|Instance}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getInstance(
@@ -805,9 +801,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   deleteInstance(
@@ -895,7 +890,7 @@ export class InstanceAdminClient {
    * existing policy.
    *
    * Authorization requires `spanner.instances.setIamPolicy` on
-   * {@link google.iam.v1.SetIamPolicyRequest.resource|resource}.
+   * {@link protos.google.iam.v1.SetIamPolicyRequest.resource|resource}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -916,9 +911,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.Policy | Policy}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.Policy|Policy}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   setIamPolicy(
@@ -992,7 +986,7 @@ export class InstanceAdminClient {
    * policy if an instance exists but does not have a policy set.
    *
    * Authorization requires `spanner.instances.getIamPolicy` on
-   * {@link google.iam.v1.GetIamPolicyRequest.resource|resource}.
+   * {@link protos.google.iam.v1.GetIamPolicyRequest.resource|resource}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1005,9 +999,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.Policy | Policy}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.Policy|Policy}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getIamPolicy(
@@ -1097,9 +1090,8 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.iam.v1.TestIamPermissionsResponse | TestIamPermissionsResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.iam.v1.TestIamPermissionsResponse|TestIamPermissionsResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   testIamPermissions(
@@ -1171,7 +1163,7 @@ export class InstanceAdminClient {
 
   /**
    * Creates an instance config and begins preparing it to be used. The
-   * returned {@link google.longrunning.Operation|long-running operation}
+   * returned {@link protos.google.longrunning.Operation|long-running operation}
    * can be used to track the progress of preparing the new
    * instance config. The instance config name is assigned by the caller. If the
    * named instance config already exists, `CreateInstanceConfig` returns
@@ -1181,7 +1173,7 @@ export class InstanceAdminClient {
    *
    *   * The instance config is readable via the API, with all requested
    *     attributes. The instance config's
-   *     {@link google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
+   *     {@link protos.google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
    *     field is set to true. Its state is `CREATING`.
    *
    * While the operation is pending:
@@ -1195,22 +1187,22 @@ export class InstanceAdminClient {
    *
    *   * Instances can be created using the instance configuration.
    *   * The instance config's
-   *   {@link google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
+   *   {@link protos.google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
    *   field becomes false. Its state becomes `READY`.
    *
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format
    * `<instance_config_name>/operations/<operation_id>` and can be used to track
    * creation of the instance config. The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}, if
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}, if
    * successful.
    *
    * Authorization requires `spanner.instanceConfigs.create` permission on
    * the resource
-   * {@link google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent|parent}.
+   * {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigRequest.parent|parent}.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1237,8 +1229,7 @@ export class InstanceAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   createInstanceConfig(
@@ -1331,8 +1322,7 @@ export class InstanceAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkCreateInstanceConfigProgress(
@@ -1360,7 +1350,7 @@ export class InstanceAdminClient {
   }
   /**
    * Updates an instance config. The returned
-   * {@link google.longrunning.Operation|long-running operation} can be used to track
+   * {@link protos.google.longrunning.Operation|long-running operation} can be used to track
    * the progress of updating the instance. If the named instance config does
    * not exist, returns `NOT_FOUND`.
    *
@@ -1369,13 +1359,13 @@ export class InstanceAdminClient {
    * Immediately after the request returns:
    *
    *   * The instance config's
-   *     {@link google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
+   *     {@link protos.google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
    *     field is set to true.
    *
    * While the operation is pending:
    *
    *   * Cancelling the operation sets its metadata's
-   *     {@link google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time|cancel_time}.
+   *     {@link protos.google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata.cancel_time|cancel_time}.
    *     The operation is guaranteed to succeed at undoing all changes, after
    *     which point it terminates with a `CANCELLED` status.
    *   * All other attempts to modify the instance config are rejected.
@@ -1388,36 +1378,36 @@ export class InstanceAdminClient {
    *     values.
    *   * The instance config's new values are readable via the API.
    *   * The instance config's
-   *   {@link google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
+   *   {@link protos.google.spanner.admin.instance.v1.InstanceConfig.reconciling|reconciling}
    *   field becomes false.
    *
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format
    * `<instance_config_name>/operations/<operation_id>` and can be used to track
    * the instance config modification.  The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata|UpdateInstanceConfigMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}, if
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.instance.v1.UpdateInstanceConfigMetadata|UpdateInstanceConfigMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}, if
    * successful.
    *
    * Authorization requires `spanner.instanceConfigs.update` permission on
-   * the resource {@link google.spanner.admin.instance.v1.InstanceConfig.name|name}.
+   * the resource {@link protos.google.spanner.admin.instance.v1.InstanceConfig.name|name}.
    *
    * @param {Object} request
    *   The request object that will be sent.
    * @param {google.spanner.admin.instance.v1.InstanceConfig} request.instanceConfig
    *   Required. The user instance config to update, which must always include the
    *   instance config name. Otherwise, only fields mentioned in
-   *   {@link google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask|update_mask}
+   *   {@link protos.google.spanner.admin.instance.v1.UpdateInstanceConfigRequest.update_mask|update_mask}
    *   need be included. To prevent conflicts of concurrent updates,
-   *   {@link google.spanner.admin.instance.v1.InstanceConfig.reconciling|etag} can
+   *   {@link protos.google.spanner.admin.instance.v1.InstanceConfig.reconciling|etag} can
    *   be used.
    * @param {google.protobuf.FieldMask} request.updateMask
    *   Required. A mask specifying which fields in
-   *   {@link google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig} should be
+   *   {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig} should be
    *   updated. The field mask must always be specified; this prevents any future
-   *   fields in {@link google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}
+   *   fields in {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}
    *   from being erased accidentally by clients that do not know about them. Only
    *   display_name and labels can be updated.
    * @param {boolean} request.validateOnly
@@ -1429,8 +1419,7 @@ export class InstanceAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   updateInstanceConfig(
@@ -1523,8 +1512,7 @@ export class InstanceAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkUpdateInstanceConfigProgress(
@@ -1552,7 +1540,7 @@ export class InstanceAdminClient {
   }
   /**
    * Creates an instance and begins preparing it to begin serving. The
-   * returned {@link google.longrunning.Operation|long-running operation}
+   * returned {@link protos.google.longrunning.Operation|long-running operation}
    * can be used to track the progress of preparing the new
    * instance. The instance name is assigned by the caller. If the
    * named instance already exists, `CreateInstance` returns
@@ -1578,13 +1566,13 @@ export class InstanceAdminClient {
    *   * The instance's allocated resource levels are readable via the API.
    *   * The instance's state becomes `READY`.
    *
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format `<instance_name>/operations/<operation_id>` and
    * can be used to track creation of the instance.  The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.instance.v1.CreateInstanceMetadata|CreateInstanceMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.instance.v1.Instance|Instance}, if successful.
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.instance.v1.CreateInstanceMetadata|CreateInstanceMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.instance.v1.Instance|Instance}, if successful.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1593,7 +1581,7 @@ export class InstanceAdminClient {
    *   are of the form `projects/<project>`.
    * @param {string} request.instanceId
    *   Required. The ID of the instance to create.  Valid identifiers are of the
-   *   form `{@link -a-z0-9|a-z}*[a-z0-9]` and must be between 2 and 64 characters in
+   *   form `{@link protos.-a-z0-9|a-z}*[a-z0-9]` and must be between 2 and 64 characters in
    *   length.
    * @param {google.spanner.admin.instance.v1.Instance} request.instance
    *   Required. The instance to create.  The name may be omitted, but if
@@ -1604,8 +1592,7 @@ export class InstanceAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   createInstance(
@@ -1698,8 +1685,7 @@ export class InstanceAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkCreateInstanceProgress(
@@ -1740,7 +1726,7 @@ export class InstanceAdminClient {
    * Until completion of the returned operation:
    *
    *   * Cancelling the operation sets its metadata's
-   *     {@link google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time|cancel_time},
+   *     {@link protos.google.spanner.admin.instance.v1.UpdateInstanceMetadata.cancel_time|cancel_time},
    *     and begins restoring resources to their pre-request values. The
    *     operation is guaranteed to succeed at undoing all resource changes,
    *     after which point it terminates with a `CANCELLED` status.
@@ -1756,29 +1742,29 @@ export class InstanceAdminClient {
    *     tables.
    *   * The instance's new resource levels are readable via the API.
    *
-   * The returned {@link google.longrunning.Operation|long-running operation} will
+   * The returned {@link protos.google.longrunning.Operation|long-running operation} will
    * have a name of the format `<instance_name>/operations/<operation_id>` and
    * can be used to track the instance modification.  The
-   * {@link google.longrunning.Operation.metadata|metadata} field type is
-   * {@link google.spanner.admin.instance.v1.UpdateInstanceMetadata|UpdateInstanceMetadata}.
-   * The {@link google.longrunning.Operation.response|response} field type is
-   * {@link google.spanner.admin.instance.v1.Instance|Instance}, if successful.
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type is
+   * {@link protos.google.spanner.admin.instance.v1.UpdateInstanceMetadata|UpdateInstanceMetadata}.
+   * The {@link protos.google.longrunning.Operation.response|response} field type is
+   * {@link protos.google.spanner.admin.instance.v1.Instance|Instance}, if successful.
    *
    * Authorization requires `spanner.instances.update` permission on
-   * the resource {@link google.spanner.admin.instance.v1.Instance.name|name}.
+   * the resource {@link protos.google.spanner.admin.instance.v1.Instance.name|name}.
    *
    * @param {Object} request
    *   The request object that will be sent.
    * @param {google.spanner.admin.instance.v1.Instance} request.instance
    *   Required. The instance to update, which must always include the instance
    *   name.  Otherwise, only fields mentioned in
-   *   {@link google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask|field_mask}
+   *   {@link protos.google.spanner.admin.instance.v1.UpdateInstanceRequest.field_mask|field_mask}
    *   need be included.
    * @param {google.protobuf.FieldMask} request.fieldMask
    *   Required. A mask specifying which fields in
-   *   {@link google.spanner.admin.instance.v1.Instance|Instance} should be updated.
+   *   {@link protos.google.spanner.admin.instance.v1.Instance|Instance} should be updated.
    *   The field mask must always be specified; this prevents any future fields in
-   *   {@link google.spanner.admin.instance.v1.Instance|Instance} from being erased
+   *   {@link protos.google.spanner.admin.instance.v1.Instance|Instance} from being erased
    *   accidentally by clients that do not know about them.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
@@ -1786,8 +1772,7 @@ export class InstanceAdminClient {
    *   The first element of the array is an object representing
    *   a long running operation. Its `promise()` method returns a promise
    *   you can `await` for.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   updateInstance(
@@ -1880,8 +1865,7 @@ export class InstanceAdminClient {
    *   The operation name that will be passed.
    * @returns {Promise} - The promise which resolves to an object.
    *   The decoded operation object has result and metadata field to get information from.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#long-running-operations | documentation }
    *   for more details and examples.
    */
   async checkUpdateInstanceProgress(
@@ -1921,20 +1905,19 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.admin.instance.v1.InstanceConfig | InstanceConfig}.
+   *   The first element of the array is Array of {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listInstanceConfigsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigs(
@@ -2025,19 +2008,18 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.admin.instance.v1.InstanceConfig | InstanceConfig} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listInstanceConfigsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigsStream(
@@ -2077,18 +2059,17 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigsResponse|ListInstanceConfigsResponse}.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.admin.instance.v1.InstanceConfig | InstanceConfig}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.admin.instance.v1.InstanceConfig|InstanceConfig}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigsAsync(
@@ -2118,7 +2099,7 @@ export class InstanceAdminClient {
    * config operation has a name of the form
    * `projects/<project>/instanceConfigs/<instance_config>/operations/<operation>`.
    * The long-running operation
-   * {@link google.longrunning.Operation.metadata|metadata} field type
+   * {@link protos.google.longrunning.Operation.metadata|metadata} field type
    * `metadata.type_url` describes the type of the metadata. Operations returned
    * include those that have completed/failed/canceled within the last 7 days,
    * and pending operations. Operations returned are ordered by
@@ -2139,14 +2120,14 @@ export class InstanceAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
    *        for
-   *        {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
+   *        {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
    *        is
    *        `type.googleapis.com/google.spanner.admin.instance.v1.CreateInstanceConfigMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
@@ -2170,7 +2151,7 @@ export class InstanceAdminClient {
    *       `(metadata.progress.start_time < \"2021-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
    *       * The operation's metadata type is
-   *       {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
+   *       {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
    *       * The instance config name contains "custom-config".
    *       * The operation started before 2021-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -2179,21 +2160,20 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
    *   to the same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.longrunning.Operation | Operation}.
+   *   The first element of the array is Array of {@link protos.google.longrunning.Operation|Operation}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listInstanceConfigOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigOperations(
@@ -2291,14 +2271,14 @@ export class InstanceAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
    *        for
-   *        {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
+   *        {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
    *        is
    *        `type.googleapis.com/google.spanner.admin.instance.v1.CreateInstanceConfigMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
@@ -2322,7 +2302,7 @@ export class InstanceAdminClient {
    *       `(metadata.progress.start_time < \"2021-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
    *       * The operation's metadata type is
-   *       {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
+   *       {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
    *       * The instance config name contains "custom-config".
    *       * The operation started before 2021-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -2331,20 +2311,19 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
    *   to the same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.longrunning.Operation | Operation} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.longrunning.Operation|Operation} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listInstanceConfigOperationsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigOperationsStream(
@@ -2387,14 +2366,14 @@ export class InstanceAdminClient {
    *   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
    *   Colon `:` is the contains operator. Filter rules are not case sensitive.
    *
-   *   The following fields in the {@link google.longrunning.Operation|Operation}
+   *   The following fields in the {@link protos.google.longrunning.Operation|Operation}
    *   are eligible for filtering:
    *
    *     * `name` - The name of the long-running operation
    *     * `done` - False if the operation is in progress, else true.
    *     * `metadata.@type` - the type of metadata. For example, the type string
    *        for
-   *        {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
+   *        {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}
    *        is
    *        `type.googleapis.com/google.spanner.admin.instance.v1.CreateInstanceConfigMetadata`.
    *     * `metadata.<field_name>` - any field in metadata.value.
@@ -2418,7 +2397,7 @@ export class InstanceAdminClient {
    *       `(metadata.progress.start_time < \"2021-03-28T14:50:00Z\") AND` \
    *       `(error:*)` - Return operations where:
    *       * The operation's metadata type is
-   *       {@link google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
+   *       {@link protos.google.spanner.admin.instance.v1.CreateInstanceConfigMetadata|CreateInstanceConfigMetadata}.
    *       * The instance config name contains "custom-config".
    *       * The operation started before 2021-03-28T14:50:00Z.
    *       * The operation resulted in an error.
@@ -2427,19 +2406,18 @@ export class InstanceAdminClient {
    *   less, defaults to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse|ListInstanceConfigOperationsResponse}
    *   to the same `parent` and with the same `filter`.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.longrunning.Operation | Operation}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.longrunning.Operation|Operation}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstanceConfigOperationsAsync(
@@ -2476,9 +2454,9 @@ export class InstanceAdminClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -2502,14 +2480,13 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.admin.instance.v1.Instance | Instance}.
+   *   The first element of the array is Array of {@link protos.google.spanner.admin.instance.v1.Instance|Instance}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listInstancesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstances(
@@ -2599,9 +2576,9 @@ export class InstanceAdminClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -2625,13 +2602,12 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.admin.instance.v1.Instance | Instance} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.admin.instance.v1.Instance|Instance} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listInstancesAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstancesStream(
@@ -2670,9 +2646,9 @@ export class InstanceAdminClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse.next_page_token|next_page_token}
    *   from a previous
-   *   {@link google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
+   *   {@link protos.google.spanner.admin.instance.v1.ListInstancesResponse|ListInstancesResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -2696,12 +2672,11 @@ export class InstanceAdminClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.admin.instance.v1.Instance | Instance}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.admin.instance.v1.Instance|Instance}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listInstancesAsync(
diff --git a/src/v1/spanner_client.ts b/src/v1/spanner_client.ts
index 1738412ba..669cecadc 100644
--- a/src/v1/spanner_client.ts
+++ b/src/v1/spanner_client.ts
@@ -93,8 +93,7 @@ export class SpannerClient {
    *     API remote host.
    * @param {gax.ClientConfig} [options.clientConfig] - Client configuration override.
    *     Follows the structure of {@link gapicConfig}.
-   * @param {boolean | "rest"} [options.fallback] - Use HTTP fallback mode.
-   *     Pass "rest" to use HTTP/1.1 REST API instead of gRPC.
+   * @param {boolean} [options.fallback] - Use HTTP/1.1 REST mode.
    *     For more information, please check the
    *     {@link https://github.com/googleapis/gax-nodejs/blob/main/client-libraries.md#http11-rest-api-mode documentation}.
    * @param {gax} [gaxInstance]: loaded instance of `google-gax`. Useful if you
@@ -102,7 +101,7 @@ export class SpannerClient {
    *     HTTP implementation. Load only fallback version and pass it to the constructor:
    *     ```
    *     const gax = require('google-gax/build/src/fallback'); // avoids loading google-gax with gRPC
-   *     const client = new SpannerClient({fallback: 'rest'}, gax);
+   *     const client = new SpannerClient({fallback: true}, gax);
    *     ```
    */
   constructor(
@@ -168,7 +167,7 @@ export class SpannerClient {
     }
     if (!opts.fallback) {
       clientHeader.push(`grpc/${this._gaxGrpc.grpcVersion}`);
-    } else if (opts.fallback === 'rest') {
+    } else {
       clientHeader.push(`rest/${this._gaxGrpc.grpcVersion}`);
     }
     if (opts.libName && opts.libVersion) {
@@ -205,11 +204,15 @@ export class SpannerClient {
     this.descriptors.stream = {
       executeStreamingSql: new this._gaxModule.StreamDescriptor(
         this._gaxModule.StreamType.SERVER_STREAMING,
-        opts.fallback === 'rest'
+        !!opts.fallback
       ),
       streamingRead: new this._gaxModule.StreamDescriptor(
         this._gaxModule.StreamType.SERVER_STREAMING,
-        opts.fallback === 'rest'
+        !!opts.fallback
+      ),
+      batchWrite: new this._gaxModule.StreamDescriptor(
+        this._gaxModule.StreamType.SERVER_STREAMING,
+        !!opts.fallback
       ),
     };
 
@@ -278,6 +281,7 @@ export class SpannerClient {
       'rollback',
       'partitionQuery',
       'partitionRead',
+      'batchWrite',
     ];
     for (const methodName of spannerStubMethods) {
       const callPromise = this.spannerStub.then(
@@ -409,9 +413,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.Session | Session}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.Session|Session}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   createSession(
@@ -497,13 +500,13 @@ export class SpannerClient {
    *   The API may return fewer than the requested number of sessions. If a
    *   specific number of sessions are desired, the client can make additional
    *   calls to BatchCreateSessions (adjusting
-   *   {@link google.spanner.v1.BatchCreateSessionsRequest.session_count|session_count} as necessary).
+   *   {@link protos.google.spanner.v1.BatchCreateSessionsRequest.session_count|session_count}
+   *   as necessary).
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.BatchCreateSessionsResponse | BatchCreateSessionsResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.BatchCreateSessionsResponse|BatchCreateSessionsResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   batchCreateSessions(
@@ -586,9 +589,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.Session | Session}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.Session|Session}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   getSession(
@@ -669,9 +671,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   deleteSession(
@@ -748,10 +749,12 @@ export class SpannerClient {
    *
    * Operations inside read-write transactions might return `ABORTED`. If
    * this occurs, the application should restart the transaction from
-   * the beginning. See {@link google.spanner.v1.Transaction|Transaction} for more details.
+   * the beginning. See {@link protos.google.spanner.v1.Transaction|Transaction} for more
+   * details.
    *
    * Larger result sets can be fetched in streaming fashion by calling
-   * {@link google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql} instead.
+   * {@link protos.google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql}
+   * instead.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -787,23 +790,27 @@ export class SpannerClient {
    * @param {number[]} request.paramTypes
    *   It is not always possible for Cloud Spanner to infer the right SQL type
    *   from a JSON value.  For example, values of type `BYTES` and values
-   *   of type `STRING` both appear in {@link google.spanner.v1.ExecuteSqlRequest.params|params} as JSON strings.
+   *   of type `STRING` both appear in
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.params|params} as JSON strings.
    *
    *   In these cases, `param_types` can be used to specify the exact
    *   SQL type for some or all of the SQL statement parameters. See the
-   *   definition of {@link google.spanner.v1.Type|Type} for more information
+   *   definition of {@link protos.google.spanner.v1.Type|Type} for more information
    *   about SQL types.
    * @param {Buffer} request.resumeToken
    *   If this request is resuming a previously interrupted SQL statement
    *   execution, `resume_token` should be copied from the last
-   *   {@link google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the interruption. Doing this
-   *   enables the new SQL statement execution to resume where the last one left
-   *   off. The rest of the request parameters must exactly match the
-   *   request that yielded this token.
+   *   {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the
+   *   interruption. Doing this enables the new SQL statement execution to resume
+   *   where the last one left off. The rest of the request parameters must
+   *   exactly match the request that yielded this token.
    * @param {google.spanner.v1.ExecuteSqlRequest.QueryMode} request.queryMode
    *   Used to control the amount of debugging information returned in
-   *   {@link google.spanner.v1.ResultSetStats|ResultSetStats}. If {@link google.spanner.v1.ExecuteSqlRequest.partition_token|partition_token} is set, {@link google.spanner.v1.ExecuteSqlRequest.query_mode|query_mode} can only
-   *   be set to {@link google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL|QueryMode.NORMAL}.
+   *   {@link protos.google.spanner.v1.ResultSetStats|ResultSetStats}. If
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.partition_token|partition_token} is
+   *   set, {@link protos.google.spanner.v1.ExecuteSqlRequest.query_mode|query_mode} can only
+   *   be set to
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL|QueryMode.NORMAL}.
    * @param {Buffer} request.partitionToken
    *   If present, results will be restricted to the specified partition
    *   previously created using PartitionQuery().  There must be an exact
@@ -824,18 +831,19 @@ export class SpannerClient {
    *   Query optimizer configuration to use for the given query.
    * @param {google.spanner.v1.RequestOptions} request.requestOptions
    *   Common options for this request.
+   * @param {google.spanner.v1.DirectedReadOptions} request.directedReadOptions
+   *   Directed read options for this request.
    * @param {boolean} request.dataBoostEnabled
    *   If this is for a partitioned query and this field is set to `true`, the
-   *   request will be executed via Spanner independent compute resources.
+   *   request is executed with Spanner Data Boost independent compute resources.
    *
    *   If the field is set to `true` but the request does not set
-   *   `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+   *   `partition_token`, the API returns an `INVALID_ARGUMENT` error.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.ResultSet | ResultSet}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.ResultSet|ResultSet}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   executeSql(
@@ -907,12 +915,13 @@ export class SpannerClient {
   /**
    * Executes a batch of SQL DML statements. This method allows many statements
    * to be run with lower latency than submitting them sequentially with
-   * {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}.
+   * {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}.
    *
    * Statements are executed in sequential order. A request can succeed even if
-   * a statement fails. The {@link google.spanner.v1.ExecuteBatchDmlResponse.status|ExecuteBatchDmlResponse.status} field in the
-   * response provides information about the statement that failed. Clients must
-   * inspect this field to determine whether an error occurred.
+   * a statement fails. The
+   * {@link protos.google.spanner.v1.ExecuteBatchDmlResponse.status|ExecuteBatchDmlResponse.status}
+   * field in the response provides information about the statement that failed.
+   * Clients must inspect this field to determine whether an error occurred.
    *
    * Execution stops after the first failed statement; the remaining statements
    * are not executed.
@@ -928,16 +937,16 @@ export class SpannerClient {
    *   caller must either supply an existing transaction ID or begin a new
    *   transaction.
    * @param {number[]} request.statements
-   *   Required. The list of statements to execute in this batch. Statements are executed
-   *   serially, such that the effects of statement `i` are visible to statement
-   *   `i+1`. Each statement must be a DML statement. Execution stops at the
-   *   first failed statement; the remaining statements are not executed.
+   *   Required. The list of statements to execute in this batch. Statements are
+   *   executed serially, such that the effects of statement `i` are visible to
+   *   statement `i+1`. Each statement must be a DML statement. Execution stops at
+   *   the first failed statement; the remaining statements are not executed.
    *
    *   Callers must provide at least one statement.
    * @param {number} request.seqno
-   *   Required. A per-transaction sequence number used to identify this request. This field
-   *   makes each request idempotent such that if the request is received multiple
-   *   times, at most one will succeed.
+   *   Required. A per-transaction sequence number used to identify this request.
+   *   This field makes each request idempotent such that if the request is
+   *   received multiple times, at most one will succeed.
    *
    *   The sequence number must be monotonically increasing within the
    *   transaction. If a request arrives for the first time with an out-of-order
@@ -948,9 +957,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.ExecuteBatchDmlResponse | ExecuteBatchDmlResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.ExecuteBatchDmlResponse|ExecuteBatchDmlResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   executeBatchDml(
@@ -1022,17 +1030,18 @@ export class SpannerClient {
   /**
    * Reads rows from the database using key lookups and scans, as a
    * simple key/value style alternative to
-   * {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}.  This method cannot be used to
-   * return a result set larger than 10 MiB; if the read matches more
+   * {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}.  This method cannot be
+   * used to return a result set larger than 10 MiB; if the read matches more
    * data than that, the read fails with a `FAILED_PRECONDITION`
    * error.
    *
    * Reads inside read-write transactions might return `ABORTED`. If
    * this occurs, the application should restart the transaction from
-   * the beginning. See {@link google.spanner.v1.Transaction|Transaction} for more details.
+   * the beginning. See {@link protos.google.spanner.v1.Transaction|Transaction} for more
+   * details.
    *
    * Larger result sets can be yielded in streaming fashion by calling
-   * {@link google.spanner.v1.Spanner.StreamingRead|StreamingRead} instead.
+   * {@link protos.google.spanner.v1.Spanner.StreamingRead|StreamingRead} instead.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1044,22 +1053,29 @@ export class SpannerClient {
    * @param {string} request.table
    *   Required. The name of the table in the database to be read.
    * @param {string} request.index
-   *   If non-empty, the name of an index on {@link google.spanner.v1.ReadRequest.table|table}. This index is
-   *   used instead of the table primary key when interpreting {@link google.spanner.v1.ReadRequest.key_set|key_set}
-   *   and sorting result rows. See {@link google.spanner.v1.ReadRequest.key_set|key_set} for further information.
+   *   If non-empty, the name of an index on
+   *   {@link protos.google.spanner.v1.ReadRequest.table|table}. This index is used instead of
+   *   the table primary key when interpreting
+   *   {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} and sorting result rows.
+   *   See {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} for further
+   *   information.
    * @param {string[]} request.columns
-   *   Required. The columns of {@link google.spanner.v1.ReadRequest.table|table} to be returned for each row matching
-   *   this request.
+   *   Required. The columns of {@link protos.google.spanner.v1.ReadRequest.table|table} to be
+   *   returned for each row matching this request.
    * @param {google.spanner.v1.KeySet} request.keySet
    *   Required. `key_set` identifies the rows to be yielded. `key_set` names the
-   *   primary keys of the rows in {@link google.spanner.v1.ReadRequest.table|table} to be yielded, unless {@link google.spanner.v1.ReadRequest.index|index}
-   *   is present. If {@link google.spanner.v1.ReadRequest.index|index} is present, then {@link google.spanner.v1.ReadRequest.key_set|key_set} instead names
-   *   index keys in {@link google.spanner.v1.ReadRequest.index|index}.
-   *
-   *   If the {@link google.spanner.v1.ReadRequest.partition_token|partition_token} field is empty, rows are yielded
-   *   in table primary key order (if {@link google.spanner.v1.ReadRequest.index|index} is empty) or index key order
-   *   (if {@link google.spanner.v1.ReadRequest.index|index} is non-empty).  If the {@link google.spanner.v1.ReadRequest.partition_token|partition_token} field is not
-   *   empty, rows will be yielded in an unspecified order.
+   *   primary keys of the rows in {@link protos.google.spanner.v1.ReadRequest.table|table} to
+   *   be yielded, unless {@link protos.google.spanner.v1.ReadRequest.index|index} is present.
+   *   If {@link protos.google.spanner.v1.ReadRequest.index|index} is present, then
+   *   {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} instead names index keys
+   *   in {@link protos.google.spanner.v1.ReadRequest.index|index}.
+   *
+   *   If the {@link protos.google.spanner.v1.ReadRequest.partition_token|partition_token}
+   *   field is empty, rows are yielded in table primary key order (if
+   *   {@link protos.google.spanner.v1.ReadRequest.index|index} is empty) or index key order
+   *   (if {@link protos.google.spanner.v1.ReadRequest.index|index} is non-empty).  If the
+   *   {@link protos.google.spanner.v1.ReadRequest.partition_token|partition_token} field is
+   *   not empty, rows will be yielded in an unspecified order.
    *
    *   It is not an error for the `key_set` to name rows that do not
    *   exist in the database. Read yields nothing for nonexistent rows.
@@ -1070,9 +1086,9 @@ export class SpannerClient {
    * @param {Buffer} request.resumeToken
    *   If this request is resuming a previously interrupted read,
    *   `resume_token` should be copied from the last
-   *   {@link google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the interruption. Doing this
-   *   enables the new read to resume where the last read left off. The
-   *   rest of the request parameters must exactly match the request
+   *   {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the
+   *   interruption. Doing this enables the new read to resume where the last read
+   *   left off. The rest of the request parameters must exactly match the request
    *   that yielded this token.
    * @param {Buffer} request.partitionToken
    *   If present, results will be restricted to the specified partition
@@ -1081,18 +1097,19 @@ export class SpannerClient {
    *   PartitionReadRequest message used to create this partition_token.
    * @param {google.spanner.v1.RequestOptions} request.requestOptions
    *   Common options for this request.
+   * @param {google.spanner.v1.DirectedReadOptions} request.directedReadOptions
+   *   Directed read options for this request.
    * @param {boolean} request.dataBoostEnabled
    *   If this is for a partitioned read and this field is set to `true`, the
-   *   request will be executed via Spanner independent compute resources.
+   *   request is executed with Spanner Data Boost independent compute resources.
    *
    *   If the field is set to `true` but the request does not set
-   *   `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+   *   `partition_token`, the API returns an `INVALID_ARGUMENT` error.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.ResultSet | ResultSet}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.ResultSet|ResultSet}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   read(
@@ -1163,8 +1180,9 @@ export class SpannerClient {
   }
   /**
    * Begins a new transaction. This step can often be skipped:
-   * {@link google.spanner.v1.Spanner.Read|Read}, {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql} and
-   * {@link google.spanner.v1.Spanner.Commit|Commit} can begin a new transaction as a
+   * {@link protos.google.spanner.v1.Spanner.Read|Read},
+   * {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql} and
+   * {@link protos.google.spanner.v1.Spanner.Commit|Commit} can begin a new transaction as a
    * side-effect.
    *
    * @param {Object} request
@@ -1182,9 +1200,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.Transaction | Transaction}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.Transaction|Transaction}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   beginTransaction(
@@ -1283,24 +1300,23 @@ export class SpannerClient {
    *   instance, due to retries in the application, or in the
    *   transport library), it is possible that the mutations are
    *   executed more than once. If this is undesirable, use
-   *   {@link google.spanner.v1.Spanner.BeginTransaction|BeginTransaction} and
-   *   {@link google.spanner.v1.Spanner.Commit|Commit} instead.
+   *   {@link protos.google.spanner.v1.Spanner.BeginTransaction|BeginTransaction} and
+   *   {@link protos.google.spanner.v1.Spanner.Commit|Commit} instead.
    * @param {number[]} request.mutations
    *   The mutations to be executed when this transaction commits. All
    *   mutations are applied atomically, in the order they appear in
    *   this list.
    * @param {boolean} request.returnCommitStats
    *   If `true`, then statistics related to the transaction will be included in
-   *   the {@link google.spanner.v1.CommitResponse.commit_stats|CommitResponse}. Default value is
-   *   `false`.
+   *   the {@link protos.google.spanner.v1.CommitResponse.commit_stats|CommitResponse}.
+   *   Default value is `false`.
    * @param {google.spanner.v1.RequestOptions} request.requestOptions
    *   Common options for this request.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.CommitResponse | CommitResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.CommitResponse|CommitResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   commit(
@@ -1372,8 +1388,9 @@ export class SpannerClient {
   /**
    * Rolls back a transaction, releasing any locks it holds. It is a good
    * idea to call this for any transaction that includes one or more
-   * {@link google.spanner.v1.Spanner.Read|Read} or {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql} requests and
-   * ultimately decides not to commit.
+   * {@link protos.google.spanner.v1.Spanner.Read|Read} or
+   * {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql} requests and ultimately
+   * decides not to commit.
    *
    * `Rollback` returns `OK` if it successfully aborts the transaction, the
    * transaction was already aborted, or the transaction is not
@@ -1388,9 +1405,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.protobuf.Empty | Empty}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.protobuf.Empty|Empty}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   rollback(
@@ -1462,10 +1478,11 @@ export class SpannerClient {
   /**
    * Creates a set of partition tokens that can be used to execute a query
    * operation in parallel.  Each of the returned partition tokens can be used
-   * by {@link google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql} to specify a subset
-   * of the query result to read.  The same session and read-only transaction
-   * must be used by the PartitionQueryRequest used to create the
-   * partition tokens and the ExecuteSqlRequests that use the partition tokens.
+   * by {@link protos.google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql} to
+   * specify a subset of the query result to read.  The same session and
+   * read-only transaction must be used by the PartitionQueryRequest used to
+   * create the partition tokens and the ExecuteSqlRequests that use the
+   * partition tokens.
    *
    * Partition tokens become invalid when the session used to create them
    * is deleted, is idle for too long, begins a new transaction, or becomes too
@@ -1480,15 +1497,16 @@ export class SpannerClient {
    *   Read only snapshot transactions are supported, read/write and single use
    *   transactions are not.
    * @param {string} request.sql
-   *   Required. The query request to generate partitions for. The request will fail if
-   *   the query is not root partitionable. The query plan of a root
-   *   partitionable query has a single distributed union operator. A distributed
-   *   union operator conceptually divides one or more tables into multiple
-   *   splits, remotely evaluates a subquery independently on each split, and
-   *   then unions all results.
-   *
-   *   This must not contain DML commands, such as INSERT, UPDATE, or
-   *   DELETE. Use {@link google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql} with a
+   *   Required. The query request to generate partitions for. The request will
+   *   fail if the query is not root partitionable. For a query to be root
+   *   partitionable, it needs to satisfy a few conditions. For example, the first
+   *   operator in the query execution plan must be a distributed union operator.
+   *   For more information about other conditions, see [Read data in
+   *   parallel](https://cloud.google.com/spanner/docs/reads#read_data_in_parallel).
+   *
+   *   The query request must not contain DML commands, such as INSERT, UPDATE, or
+   *   DELETE. Use
+   *   {@link protos.google.spanner.v1.Spanner.ExecuteStreamingSql|ExecuteStreamingSql} with a
    *   PartitionedDml transaction for large, partition-friendly DML operations.
    * @param {google.protobuf.Struct} request.params
    *   Parameter names and values that bind to placeholders in the SQL string.
@@ -1506,20 +1524,20 @@ export class SpannerClient {
    * @param {number[]} request.paramTypes
    *   It is not always possible for Cloud Spanner to infer the right SQL type
    *   from a JSON value.  For example, values of type `BYTES` and values
-   *   of type `STRING` both appear in {@link google.spanner.v1.PartitionQueryRequest.params|params} as JSON strings.
+   *   of type `STRING` both appear in
+   *   {@link protos.google.spanner.v1.PartitionQueryRequest.params|params} as JSON strings.
    *
    *   In these cases, `param_types` can be used to specify the exact
    *   SQL type for some or all of the SQL query parameters. See the
-   *   definition of {@link google.spanner.v1.Type|Type} for more information
+   *   definition of {@link protos.google.spanner.v1.Type|Type} for more information
    *   about SQL types.
    * @param {google.spanner.v1.PartitionOptions} request.partitionOptions
    *   Additional options that affect how many partitions are created.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.PartitionResponse | PartitionResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.PartitionResponse|PartitionResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   partitionQuery(
@@ -1591,12 +1609,13 @@ export class SpannerClient {
   /**
    * Creates a set of partition tokens that can be used to execute a read
    * operation in parallel.  Each of the returned partition tokens can be used
-   * by {@link google.spanner.v1.Spanner.StreamingRead|StreamingRead} to specify a subset of the read
-   * result to read.  The same session and read-only transaction must be used by
-   * the PartitionReadRequest used to create the partition tokens and the
-   * ReadRequests that use the partition tokens.  There are no ordering
-   * guarantees on rows returned among the returned partition tokens, or even
-   * within each individual StreamingRead call issued with a partition_token.
+   * by {@link protos.google.spanner.v1.Spanner.StreamingRead|StreamingRead} to specify a
+   * subset of the read result to read.  The same session and read-only
+   * transaction must be used by the PartitionReadRequest used to create the
+   * partition tokens and the ReadRequests that use the partition tokens.  There
+   * are no ordering guarantees on rows returned among the returned partition
+   * tokens, or even within each individual StreamingRead call issued with a
+   * partition_token.
    *
    * Partition tokens become invalid when the session used to create them
    * is deleted, is idle for too long, begins a new transaction, or becomes too
@@ -1613,17 +1632,23 @@ export class SpannerClient {
    * @param {string} request.table
    *   Required. The name of the table in the database to be read.
    * @param {string} request.index
-   *   If non-empty, the name of an index on {@link google.spanner.v1.PartitionReadRequest.table|table}. This index is
-   *   used instead of the table primary key when interpreting {@link google.spanner.v1.PartitionReadRequest.key_set|key_set}
-   *   and sorting result rows. See {@link google.spanner.v1.PartitionReadRequest.key_set|key_set} for further information.
+   *   If non-empty, the name of an index on
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.table|table}. This index is used
+   *   instead of the table primary key when interpreting
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.key_set|key_set} and sorting
+   *   result rows. See {@link protos.google.spanner.v1.PartitionReadRequest.key_set|key_set}
+   *   for further information.
    * @param {string[]} request.columns
-   *   The columns of {@link google.spanner.v1.PartitionReadRequest.table|table} to be returned for each row matching
-   *   this request.
+   *   The columns of {@link protos.google.spanner.v1.PartitionReadRequest.table|table} to be
+   *   returned for each row matching this request.
    * @param {google.spanner.v1.KeySet} request.keySet
    *   Required. `key_set` identifies the rows to be yielded. `key_set` names the
-   *   primary keys of the rows in {@link google.spanner.v1.PartitionReadRequest.table|table} to be yielded, unless {@link google.spanner.v1.PartitionReadRequest.index|index}
-   *   is present. If {@link google.spanner.v1.PartitionReadRequest.index|index} is present, then {@link google.spanner.v1.PartitionReadRequest.key_set|key_set} instead names
-   *   index keys in {@link google.spanner.v1.PartitionReadRequest.index|index}.
+   *   primary keys of the rows in
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.table|table} to be yielded, unless
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.index|index} is present. If
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.index|index} is present, then
+   *   {@link protos.google.spanner.v1.PartitionReadRequest.key_set|key_set} instead names
+   *   index keys in {@link protos.google.spanner.v1.PartitionReadRequest.index|index}.
    *
    *   It is not an error for the `key_set` to name rows that do not
    *   exist in the database. Read yields nothing for nonexistent rows.
@@ -1632,9 +1657,8 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is an object representing {@link google.spanner.v1.PartitionResponse | PartitionResponse}.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods)
+   *   The first element of the array is an object representing {@link protos.google.spanner.v1.PartitionResponse|PartitionResponse}.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#regular-methods | documentation }
    *   for more details and examples.
    */
   partitionRead(
@@ -1705,11 +1729,11 @@ export class SpannerClient {
   }
 
   /**
-   * Like {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}, except returns the result
-   * set as a stream. Unlike {@link google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}, there
-   * is no limit on the size of the returned result set. However, no
-   * individual row in the result set can exceed 100 MiB, and no
-   * column value can exceed 10 MiB.
+   * Like {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}, except returns the
+   * result set as a stream. Unlike
+   * {@link protos.google.spanner.v1.Spanner.ExecuteSql|ExecuteSql}, there is no limit on
+   * the size of the returned result set. However, no individual row in the
+   * result set can exceed 100 MiB, and no column value can exceed 10 MiB.
    *
    * @param {Object} request
    *   The request object that will be sent.
@@ -1745,23 +1769,27 @@ export class SpannerClient {
    * @param {number[]} request.paramTypes
    *   It is not always possible for Cloud Spanner to infer the right SQL type
    *   from a JSON value.  For example, values of type `BYTES` and values
-   *   of type `STRING` both appear in {@link google.spanner.v1.ExecuteSqlRequest.params|params} as JSON strings.
+   *   of type `STRING` both appear in
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.params|params} as JSON strings.
    *
    *   In these cases, `param_types` can be used to specify the exact
    *   SQL type for some or all of the SQL statement parameters. See the
-   *   definition of {@link google.spanner.v1.Type|Type} for more information
+   *   definition of {@link protos.google.spanner.v1.Type|Type} for more information
    *   about SQL types.
    * @param {Buffer} request.resumeToken
    *   If this request is resuming a previously interrupted SQL statement
    *   execution, `resume_token` should be copied from the last
-   *   {@link google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the interruption. Doing this
-   *   enables the new SQL statement execution to resume where the last one left
-   *   off. The rest of the request parameters must exactly match the
-   *   request that yielded this token.
+   *   {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the
+   *   interruption. Doing this enables the new SQL statement execution to resume
+   *   where the last one left off. The rest of the request parameters must
+   *   exactly match the request that yielded this token.
    * @param {google.spanner.v1.ExecuteSqlRequest.QueryMode} request.queryMode
    *   Used to control the amount of debugging information returned in
-   *   {@link google.spanner.v1.ResultSetStats|ResultSetStats}. If {@link google.spanner.v1.ExecuteSqlRequest.partition_token|partition_token} is set, {@link google.spanner.v1.ExecuteSqlRequest.query_mode|query_mode} can only
-   *   be set to {@link google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL|QueryMode.NORMAL}.
+   *   {@link protos.google.spanner.v1.ResultSetStats|ResultSetStats}. If
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.partition_token|partition_token} is
+   *   set, {@link protos.google.spanner.v1.ExecuteSqlRequest.query_mode|query_mode} can only
+   *   be set to
+   *   {@link protos.google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL|QueryMode.NORMAL}.
    * @param {Buffer} request.partitionToken
    *   If present, results will be restricted to the specified partition
    *   previously created using PartitionQuery().  There must be an exact
@@ -1782,18 +1810,19 @@ export class SpannerClient {
    *   Query optimizer configuration to use for the given query.
    * @param {google.spanner.v1.RequestOptions} request.requestOptions
    *   Common options for this request.
+   * @param {google.spanner.v1.DirectedReadOptions} request.directedReadOptions
+   *   Directed read options for this request.
    * @param {boolean} request.dataBoostEnabled
    *   If this is for a partitioned query and this field is set to `true`, the
-   *   request will be executed via Spanner independent compute resources.
+   *   request is executed with Spanner Data Boost independent compute resources.
    *
    *   If the field is set to `true` but the request does not set
-   *   `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+   *   `partition_token`, the API returns an `INVALID_ARGUMENT` error.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits {@link google.spanner.v1.PartialResultSet | PartialResultSet} on 'data' event.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#server-streaming)
+   *   An object stream which emits {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} on 'data' event.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#server-streaming | documentation }
    *   for more details and examples.
    */
   executeStreamingSql(
@@ -1813,9 +1842,9 @@ export class SpannerClient {
   }
 
   /**
-   * Like {@link google.spanner.v1.Spanner.Read|Read}, except returns the result set as a
-   * stream. Unlike {@link google.spanner.v1.Spanner.Read|Read}, there is no limit on the
-   * size of the returned result set. However, no individual row in
+   * Like {@link protos.google.spanner.v1.Spanner.Read|Read}, except returns the result set
+   * as a stream. Unlike {@link protos.google.spanner.v1.Spanner.Read|Read}, there is no
+   * limit on the size of the returned result set. However, no individual row in
    * the result set can exceed 100 MiB, and no column value can exceed
    * 10 MiB.
    *
@@ -1829,22 +1858,29 @@ export class SpannerClient {
    * @param {string} request.table
    *   Required. The name of the table in the database to be read.
    * @param {string} request.index
-   *   If non-empty, the name of an index on {@link google.spanner.v1.ReadRequest.table|table}. This index is
-   *   used instead of the table primary key when interpreting {@link google.spanner.v1.ReadRequest.key_set|key_set}
-   *   and sorting result rows. See {@link google.spanner.v1.ReadRequest.key_set|key_set} for further information.
+   *   If non-empty, the name of an index on
+   *   {@link protos.google.spanner.v1.ReadRequest.table|table}. This index is used instead of
+   *   the table primary key when interpreting
+   *   {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} and sorting result rows.
+   *   See {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} for further
+   *   information.
    * @param {string[]} request.columns
-   *   Required. The columns of {@link google.spanner.v1.ReadRequest.table|table} to be returned for each row matching
-   *   this request.
+   *   Required. The columns of {@link protos.google.spanner.v1.ReadRequest.table|table} to be
+   *   returned for each row matching this request.
    * @param {google.spanner.v1.KeySet} request.keySet
    *   Required. `key_set` identifies the rows to be yielded. `key_set` names the
-   *   primary keys of the rows in {@link google.spanner.v1.ReadRequest.table|table} to be yielded, unless {@link google.spanner.v1.ReadRequest.index|index}
-   *   is present. If {@link google.spanner.v1.ReadRequest.index|index} is present, then {@link google.spanner.v1.ReadRequest.key_set|key_set} instead names
-   *   index keys in {@link google.spanner.v1.ReadRequest.index|index}.
-   *
-   *   If the {@link google.spanner.v1.ReadRequest.partition_token|partition_token} field is empty, rows are yielded
-   *   in table primary key order (if {@link google.spanner.v1.ReadRequest.index|index} is empty) or index key order
-   *   (if {@link google.spanner.v1.ReadRequest.index|index} is non-empty).  If the {@link google.spanner.v1.ReadRequest.partition_token|partition_token} field is not
-   *   empty, rows will be yielded in an unspecified order.
+   *   primary keys of the rows in {@link protos.google.spanner.v1.ReadRequest.table|table} to
+   *   be yielded, unless {@link protos.google.spanner.v1.ReadRequest.index|index} is present.
+   *   If {@link protos.google.spanner.v1.ReadRequest.index|index} is present, then
+   *   {@link protos.google.spanner.v1.ReadRequest.key_set|key_set} instead names index keys
+   *   in {@link protos.google.spanner.v1.ReadRequest.index|index}.
+   *
+   *   If the {@link protos.google.spanner.v1.ReadRequest.partition_token|partition_token}
+   *   field is empty, rows are yielded in table primary key order (if
+   *   {@link protos.google.spanner.v1.ReadRequest.index|index} is empty) or index key order
+   *   (if {@link protos.google.spanner.v1.ReadRequest.index|index} is non-empty).  If the
+   *   {@link protos.google.spanner.v1.ReadRequest.partition_token|partition_token} field is
+   *   not empty, rows will be yielded in an unspecified order.
    *
    *   It is not an error for the `key_set` to name rows that do not
    *   exist in the database. Read yields nothing for nonexistent rows.
@@ -1855,9 +1891,9 @@ export class SpannerClient {
    * @param {Buffer} request.resumeToken
    *   If this request is resuming a previously interrupted read,
    *   `resume_token` should be copied from the last
-   *   {@link google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the interruption. Doing this
-   *   enables the new read to resume where the last read left off. The
-   *   rest of the request parameters must exactly match the request
+   *   {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} yielded before the
+   *   interruption. Doing this enables the new read to resume where the last read
+   *   left off. The rest of the request parameters must exactly match the request
    *   that yielded this token.
    * @param {Buffer} request.partitionToken
    *   If present, results will be restricted to the specified partition
@@ -1866,18 +1902,19 @@ export class SpannerClient {
    *   PartitionReadRequest message used to create this partition_token.
    * @param {google.spanner.v1.RequestOptions} request.requestOptions
    *   Common options for this request.
+   * @param {google.spanner.v1.DirectedReadOptions} request.directedReadOptions
+   *   Directed read options for this request.
    * @param {boolean} request.dataBoostEnabled
    *   If this is for a partitioned read and this field is set to `true`, the
-   *   request will be executed via Spanner independent compute resources.
+   *   request is executed with Spanner Data Boost independent compute resources.
    *
    *   If the field is set to `true` but the request does not set
-   *   `partition_token`, the API will return an `INVALID_ARGUMENT` error.
+   *   `partition_token`, the API returns an `INVALID_ARGUMENT` error.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits {@link google.spanner.v1.PartialResultSet | PartialResultSet} on 'data' event.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#server-streaming)
+   *   An object stream which emits {@link protos.google.spanner.v1.PartialResultSet|PartialResultSet} on 'data' event.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#server-streaming | documentation }
    *   for more details and examples.
    */
   streamingRead(
@@ -1896,6 +1933,54 @@ export class SpannerClient {
     return this.innerApiCalls.streamingRead(request, options);
   }
 
+  /**
+   * Batches the supplied mutation groups in a collection of efficient
+   * transactions. All mutations in a group are committed atomically. However,
+   * mutations across groups can be committed non-atomically in an unspecified
+   * order and thus, they must be independent of each other. Partial failure is
+   * possible, i.e., some groups may have been committed successfully, while
+   * some may have failed. The results of individual batches are streamed into
+   * the response as the batches are applied.
+   *
+   * BatchWrite requests are not replay protected, meaning that each mutation
+   * group may be applied more than once. Replays of non-idempotent mutations
+   * may have undesirable effects. For example, replays of an insert mutation
+   * may produce an already exists error or if you use generated or commit
+   * timestamp-based keys, it may result in additional rows being added to the
+   * mutation's table. We recommend structuring your mutation groups to be
+   * idempotent to avoid this issue.
+   *
+   * @param {Object} request
+   *   The request object that will be sent.
+   * @param {string} request.session
+   *   Required. The session in which the batch request is to be run.
+   * @param {google.spanner.v1.RequestOptions} request.requestOptions
+   *   Common options for this request.
+   * @param {number[]} request.mutationGroups
+   *   Required. The groups of mutations to be applied.
+   * @param {object} [options]
+   *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
+   * @returns {Stream}
+   *   An object stream which emits {@link protos.google.spanner.v1.BatchWriteResponse|BatchWriteResponse} on 'data' event.
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#server-streaming | documentation }
+   *   for more details and examples.
+   */
+  batchWrite(
+    request?: protos.google.spanner.v1.IBatchWriteRequest,
+    options?: CallOptions
+  ): gax.CancellableStream {
+    request = request || {};
+    options = options || {};
+    options.otherArgs = options.otherArgs || {};
+    options.otherArgs.headers = options.otherArgs.headers || {};
+    options.otherArgs.headers['x-goog-request-params'] =
+      this._gaxModule.routingHeader.fromParams({
+        session: request.session ?? '',
+      });
+    this.initialize();
+    return this.innerApiCalls.batchWrite(request, options);
+  }
+
   /**
    * Lists all sessions in a given database.
    *
@@ -1908,8 +1993,9 @@ export class SpannerClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token} from a previous
-   *   {@link google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
+   *   {@link protos.google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token}
+   *   from a previous
+   *   {@link protos.google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -1924,14 +2010,13 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.
-   *   The first element of the array is Array of {@link google.spanner.v1.Session | Session}.
+   *   The first element of the array is Array of {@link protos.google.spanner.v1.Session|Session}.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed and will merge results from all the pages into this array.
    *   Note that it can affect your quota.
    *   We recommend using `listSessionsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listSessions(
@@ -2012,8 +2097,9 @@ export class SpannerClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token} from a previous
-   *   {@link google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
+   *   {@link protos.google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token}
+   *   from a previous
+   *   {@link protos.google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -2028,13 +2114,12 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Stream}
-   *   An object stream which emits an object representing {@link google.spanner.v1.Session | Session} on 'data' event.
+   *   An object stream which emits an object representing {@link protos.google.spanner.v1.Session|Session} on 'data' event.
    *   The client library will perform auto-pagination by default: it will call the API as many
    *   times as needed. Note that it can affect your quota.
    *   We recommend using `listSessionsAsync()`
    *   method described below for async iteration which you can stop as needed.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listSessionsStream(
@@ -2072,8 +2157,9 @@ export class SpannerClient {
    *   to the server's maximum allowed page size.
    * @param {string} request.pageToken
    *   If non-empty, `page_token` should contain a
-   *   {@link google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token} from a previous
-   *   {@link google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
+   *   {@link protos.google.spanner.v1.ListSessionsResponse.next_page_token|next_page_token}
+   *   from a previous
+   *   {@link protos.google.spanner.v1.ListSessionsResponse|ListSessionsResponse}.
    * @param {string} request.filter
    *   An expression for filtering the results of the request. Filter rules are
    *   case insensitive. The fields eligible for filtering are:
@@ -2088,12 +2174,11 @@ export class SpannerClient {
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Object}
-   *   An iterable Object that allows [async iteration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols).
+   *   An iterable Object that allows {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols | async iteration }.
    *   When you iterate the returned iterable, each element will be an object representing
-   *   {@link google.spanner.v1.Session | Session}. The API will be called under the hood as needed, once per the page,
+   *   {@link protos.google.spanner.v1.Session|Session}. The API will be called under the hood as needed, once per the page,
    *   so you can stop the iteration when you don't need more results.
-   *   Please see the
-   *   [documentation](https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination)
+   *   Please see the {@link https://github.com/googleapis/gax-nodejs/blob/master/client-libraries.md#auto-pagination | documentation }
    *   for more details and examples.
    */
   listSessionsAsync(
diff --git a/src/v1/spanner_client_config.json b/src/v1/spanner_client_config.json
index d14bef0e6..f1ed7096b 100644
--- a/src/v1/spanner_client_config.json
+++ b/src/v1/spanner_client_config.json
@@ -106,6 +106,11 @@
           "timeout_millis": 30000,
           "retry_codes_name": "unavailable",
           "retry_params_name": "9442ca297df43f7314712e1a19d003838e738a45"
+        },
+        "BatchWrite": {
+          "timeout_millis": 3600000,
+          "retry_codes_name": "non_idempotent",
+          "retry_params_name": "default"
         }
       }
     }
diff --git a/system-test/spanner.ts b/system-test/spanner.ts
index ddacbf344..fa5878f04 100644
--- a/system-test/spanner.ts
+++ b/system-test/spanner.ts
@@ -158,9 +158,8 @@ describe('Spanner', () => {
          PRIMARY KEY (SingerId)
        );`,
       ];
-      const [postgreSqlOperationUpdateDDL] = await pg_database.updateSchema(
-        schema
-      );
+      const [postgreSqlOperationUpdateDDL] =
+        await pg_database.updateSchema(schema);
       await postgreSqlOperationUpdateDDL.promise();
       RESOURCES_TO_CLEAN.push(PG_DATABASE);
 
@@ -2617,9 +2616,8 @@ describe('Spanner', () => {
         );
         await operation.promise();
 
-        const [operationUpdateDDL] = await database.updateSchema(
-          database_schema
-        );
+        const [operationUpdateDDL] =
+          await database.updateSchema(database_schema);
         await operationUpdateDDL.promise();
 
         const [schema] = await database.getSchema();
diff --git a/test/gapic_spanner_v1.ts b/test/gapic_spanner_v1.ts
index d1974d5cd..a545b3660 100644
--- a/test/gapic_spanner_v1.ts
+++ b/test/gapic_spanner_v1.ts
@@ -1898,7 +1898,9 @@ describe('v1.SpannerClient', () => {
       request.session = defaultValue1;
       const expectedError = new Error('The client has already been closed.');
       client.close();
-      const stream = client.executeStreamingSql(request);
+      const stream = client.executeStreamingSql(request, {
+        retryRequestOptions: {noResponseRetries: 0},
+      });
       const promise = new Promise((resolve, reject) => {
         stream.on(
           'data',
@@ -2018,7 +2020,9 @@ describe('v1.SpannerClient', () => {
       request.session = defaultValue1;
       const expectedError = new Error('The client has already been closed.');
       client.close();
-      const stream = client.streamingRead(request);
+      const stream = client.streamingRead(request, {
+        retryRequestOptions: {noResponseRetries: 0},
+      });
       const promise = new Promise((resolve, reject) => {
         stream.on(
           'data',
@@ -2034,6 +2038,128 @@ describe('v1.SpannerClient', () => {
     });
   });
 
+  describe('batchWrite', () => {
+    it('invokes batchWrite without error', async () => {
+      const client = new spannerModule.v1.SpannerClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.initialize();
+      const request = generateSampleMessage(
+        new protos.google.spanner.v1.BatchWriteRequest()
+      );
+      const defaultValue1 = getTypeDefaultValue(
+        '.google.spanner.v1.BatchWriteRequest',
+        ['session']
+      );
+      request.session = defaultValue1;
+      const expectedHeaderRequestParams = `session=${defaultValue1}`;
+      const expectedResponse = generateSampleMessage(
+        new protos.google.spanner.v1.BatchWriteResponse()
+      );
+      client.innerApiCalls.batchWrite =
+        stubServerStreamingCall(expectedResponse);
+      const stream = client.batchWrite(request);
+      const promise = new Promise((resolve, reject) => {
+        stream.on(
+          'data',
+          (response: protos.google.spanner.v1.BatchWriteResponse) => {
+            resolve(response);
+          }
+        );
+        stream.on('error', (err: Error) => {
+          reject(err);
+        });
+      });
+      const response = await promise;
+      assert.deepStrictEqual(response, expectedResponse);
+      const actualRequest = (
+        client.innerApiCalls.batchWrite as SinonStub
+      ).getCall(0).args[0];
+      assert.deepStrictEqual(actualRequest, request);
+      const actualHeaderRequestParams = (
+        client.innerApiCalls.batchWrite as SinonStub
+      ).getCall(0).args[1].otherArgs.headers['x-goog-request-params'];
+      assert(actualHeaderRequestParams.includes(expectedHeaderRequestParams));
+    });
+
+    it('invokes batchWrite with error', async () => {
+      const client = new spannerModule.v1.SpannerClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.initialize();
+      const request = generateSampleMessage(
+        new protos.google.spanner.v1.BatchWriteRequest()
+      );
+      const defaultValue1 = getTypeDefaultValue(
+        '.google.spanner.v1.BatchWriteRequest',
+        ['session']
+      );
+      request.session = defaultValue1;
+      const expectedHeaderRequestParams = `session=${defaultValue1}`;
+      const expectedError = new Error('expected');
+      client.innerApiCalls.batchWrite = stubServerStreamingCall(
+        undefined,
+        expectedError
+      );
+      const stream = client.batchWrite(request);
+      const promise = new Promise((resolve, reject) => {
+        stream.on(
+          'data',
+          (response: protos.google.spanner.v1.BatchWriteResponse) => {
+            resolve(response);
+          }
+        );
+        stream.on('error', (err: Error) => {
+          reject(err);
+        });
+      });
+      await assert.rejects(promise, expectedError);
+      const actualRequest = (
+        client.innerApiCalls.batchWrite as SinonStub
+      ).getCall(0).args[0];
+      assert.deepStrictEqual(actualRequest, request);
+      const actualHeaderRequestParams = (
+        client.innerApiCalls.batchWrite as SinonStub
+      ).getCall(0).args[1].otherArgs.headers['x-goog-request-params'];
+      assert(actualHeaderRequestParams.includes(expectedHeaderRequestParams));
+    });
+
+    it('invokes batchWrite with closed client', async () => {
+      const client = new spannerModule.v1.SpannerClient({
+        credentials: {client_email: 'bogus', private_key: 'bogus'},
+        projectId: 'bogus',
+      });
+      client.initialize();
+      const request = generateSampleMessage(
+        new protos.google.spanner.v1.BatchWriteRequest()
+      );
+      const defaultValue1 = getTypeDefaultValue(
+        '.google.spanner.v1.BatchWriteRequest',
+        ['session']
+      );
+      request.session = defaultValue1;
+      const expectedError = new Error('The client has already been closed.');
+      client.close();
+      const stream = client.batchWrite(request, {
+        retryRequestOptions: {noResponseRetries: 0},
+      });
+      const promise = new Promise((resolve, reject) => {
+        stream.on(
+          'data',
+          (response: protos.google.spanner.v1.BatchWriteResponse) => {
+            resolve(response);
+          }
+        );
+        stream.on('error', (err: Error) => {
+          reject(err);
+        });
+      });
+      await assert.rejects(promise, expectedError);
+    });
+  });
+
   describe('listSessions', () => {
     it('invokes listSessions without error', async () => {
       const client = new spannerModule.v1.SpannerClient({
diff --git a/test/session-pool.ts b/test/session-pool.ts
index 65d123b4d..43599585d 100644
--- a/test/session-pool.ts
+++ b/test/session-pool.ts
@@ -84,6 +84,7 @@ describe('SessionPool', () => {
       getColumnNumber: sandbox.stub().returns('13'),
       getTypeName: sandbox.stub().returns('type'),
       isNative: sandbox.stub().returns(false),
+      isConstructor: sandbox.stub().returns(false),
     };
   };
 
diff --git a/test/spanner.ts b/test/spanner.ts
index a01338ac5..87e1493c9 100644
--- a/test/spanner.ts
+++ b/test/spanner.ts
@@ -4254,9 +4254,8 @@ describe('Spanner with mock server', () => {
       const dbSpecificQuery: GetDatabaseOperationsOptions = {
         filter: dbSpecificFilter,
       };
-      const [operations1] = await instance.getDatabaseOperations(
-        dbSpecificQuery
-      );
+      const [operations1] =
+        await instance.getDatabaseOperations(dbSpecificQuery);
 
       const database = instance.database('test-database');
       const [operations2] = await database.getOperations();