diff --git a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
index 3200f505c..e65845b85 100644
--- a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
+++ b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java
@@ -771,7 +771,7 @@ public final Bucket lockBucketRetentionPolicy(LockBucketRetentionPolicyRequest r
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket.
+   * Gets the IAM policy for a specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -799,7 +799,7 @@ public final Policy getIamPolicy(ResourceName resource) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket.
+   * Gets the IAM policy for a specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -824,7 +824,7 @@ public final Policy getIamPolicy(String resource) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket.
+   * Gets the IAM policy for a specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -852,7 +852,7 @@ public final Policy getIamPolicy(GetIamPolicyRequest request) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket.
+   * Gets the IAM policy for a specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -879,7 +879,7 @@ public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket.
+   * Updates an IAM policy for the specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -912,7 +912,7 @@ public final Policy setIamPolicy(ResourceName resource, Policy policy) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket.
+   * Updates an IAM policy for the specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -942,7 +942,7 @@ public final Policy setIamPolicy(String resource, Policy policy) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket.
+   * Updates an IAM policy for the specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -971,7 +971,7 @@ public final Policy setIamPolicy(SetIamPolicyRequest request) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket.
+   * Updates an IAM policy for the specified bucket or object.
    *
    * <p>Sample code:
    *
@@ -999,7 +999,8 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Tests a set of permissions on the given bucket to see which, if any, are held by the caller.
+   * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
+   * caller.
    *
    * <p>Sample code:
    *
@@ -1033,7 +1034,8 @@ public final TestIamPermissionsResponse testIamPermissions(
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Tests a set of permissions on the given bucket to see which, if any, are held by the caller.
+   * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
+   * caller.
    *
    * <p>Sample code:
    *
@@ -1067,7 +1069,8 @@ public final TestIamPermissionsResponse testIamPermissions(
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Tests a set of permissions on the given bucket to see which, if any, are held by the caller.
+   * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
+   * caller.
    *
    * <p>Sample code:
    *
@@ -1095,7 +1098,8 @@ public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsReq
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Tests a set of permissions on the given bucket to see which, if any, are held by the caller.
+   * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
+   * caller.
    *
    * <p>Sample code:
    *
@@ -1820,7 +1824,6 @@ public final void deleteObject(String bucket, String object, long generation) {
    *       DeleteObjectRequest.newBuilder()
    *           .setBucket("bucket-1378203158")
    *           .setObject("object-1023368385")
-   *           .setUploadId("uploadId1563990780")
    *           .setGeneration(305703192)
    *           .setIfGenerationMatch(-1086241088)
    *           .setIfGenerationNotMatch(1475720404)
@@ -1854,7 +1857,6 @@ public final void deleteObject(DeleteObjectRequest request) {
    *       DeleteObjectRequest.newBuilder()
    *           .setBucket("bucket-1378203158")
    *           .setObject("object-1023368385")
-   *           .setUploadId("uploadId1563990780")
    *           .setGeneration(305703192)
    *           .setIfGenerationMatch(-1086241088)
    *           .setIfGenerationNotMatch(1475720404)
@@ -1872,6 +1874,79 @@ public final UnaryCallable<DeleteObjectRequest, Empty> deleteObjectCallable() {
     return stub.deleteObjectCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Cancels an in-progress resumable upload.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
+   * try (StorageClient storageClient = StorageClient.create()) {
+   *   String uploadId = "uploadId1563990780";
+   *   CancelResumableWriteResponse response = storageClient.cancelResumableWrite(uploadId);
+   * }
+   * }</pre>
+   *
+   * @param uploadId Required. The upload_id of the resumable upload to cancel. This should be
+   *     copied from the `upload_id` field of `StartResumableWriteResponse`.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final CancelResumableWriteResponse cancelResumableWrite(String uploadId) {
+    CancelResumableWriteRequest request =
+        CancelResumableWriteRequest.newBuilder().setUploadId(uploadId).build();
+    return cancelResumableWrite(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Cancels an in-progress resumable upload.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
+   * try (StorageClient storageClient = StorageClient.create()) {
+   *   CancelResumableWriteRequest request =
+   *       CancelResumableWriteRequest.newBuilder().setUploadId("uploadId1563990780").build();
+   *   CancelResumableWriteResponse response = storageClient.cancelResumableWrite(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final CancelResumableWriteResponse cancelResumableWrite(
+      CancelResumableWriteRequest request) {
+    return cancelResumableWriteCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Cancels an in-progress resumable upload.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
+   * try (StorageClient storageClient = StorageClient.create()) {
+   *   CancelResumableWriteRequest request =
+   *       CancelResumableWriteRequest.newBuilder().setUploadId("uploadId1563990780").build();
+   *   ApiFuture<CancelResumableWriteResponse> future =
+   *       storageClient.cancelResumableWriteCallable().futureCall(request);
+   *   // Do something.
+   *   CancelResumableWriteResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteCallable() {
+    return stub.cancelResumableWriteCallable();
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Retrieves an object's metadata.
@@ -2653,7 +2728,8 @@ public final QueryWriteStatusResponse queryWriteStatus(QueryWriteStatusRequest r
    * }
    * }</pre>
    *
-   * @param project Required. Project ID.
+   * @param project Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   *     &lt;projectIdentifier&gt; can be the project ID or project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final ServiceAccount getServiceAccount(ProjectName project) {
@@ -2679,7 +2755,8 @@ public final ServiceAccount getServiceAccount(ProjectName project) {
    * }
    * }</pre>
    *
-   * @param project Required. Project ID.
+   * @param project Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   *     &lt;projectIdentifier&gt; can be the project ID or project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final ServiceAccount getServiceAccount(String project) {
@@ -2754,7 +2831,9 @@ public final UnaryCallable<GetServiceAccountRequest, ServiceAccount> getServiceA
    * }
    * }</pre>
    *
-   * @param project Required. The project that the HMAC-owning service account lives in.
+   * @param project Required. The project that the HMAC-owning service account lives in, in the
+   *     format of "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the
+   *     project ID or project number.
    * @param serviceAccountEmail Required. The service account to create the HMAC for.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
@@ -2784,7 +2863,9 @@ public final CreateHmacKeyResponse createHmacKey(
    * }
    * }</pre>
    *
-   * @param project Required. The project that the HMAC-owning service account lives in.
+   * @param project Required. The project that the HMAC-owning service account lives in, in the
+   *     format of "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the
+   *     project ID or project number.
    * @param serviceAccountEmail Required. The service account to create the HMAC for.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
@@ -2866,7 +2947,9 @@ public final UnaryCallable<CreateHmacKeyRequest, CreateHmacKeyResponse> createHm
    * }</pre>
    *
    * @param accessId Required. The identifying key for the HMAC to delete.
-   * @param project Required. The project id the HMAC key lies in.
+   * @param project Required. The project that owns the HMAC key, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final void deleteHmacKey(String accessId, ProjectName project) {
@@ -2895,7 +2978,9 @@ public final void deleteHmacKey(String accessId, ProjectName project) {
    * }</pre>
    *
    * @param accessId Required. The identifying key for the HMAC to delete.
-   * @param project Required. The project id the HMAC key lies in.
+   * @param project Required. The project that owns the HMAC key, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final void deleteHmacKey(String accessId, String project) {
@@ -2972,7 +3057,9 @@ public final UnaryCallable<DeleteHmacKeyRequest, Empty> deleteHmacKeyCallable()
    * }</pre>
    *
    * @param accessId Required. The identifying key for the HMAC to delete.
-   * @param project Required. The project id the HMAC key lies in.
+   * @param project Required. The project the HMAC key lies in, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final HmacKeyMetadata getHmacKey(String accessId, ProjectName project) {
@@ -3001,7 +3088,9 @@ public final HmacKeyMetadata getHmacKey(String accessId, ProjectName project) {
    * }</pre>
    *
    * @param accessId Required. The identifying key for the HMAC to delete.
-   * @param project Required. The project id the HMAC key lies in.
+   * @param project Required. The project the HMAC key lies in, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final HmacKeyMetadata getHmacKey(String accessId, String project) {
@@ -3078,7 +3167,9 @@ public final UnaryCallable<GetHmacKeyRequest, HmacKeyMetadata> getHmacKeyCallabl
    * }
    * }</pre>
    *
-   * @param project Required. The project id to list HMAC keys for.
+   * @param project Required. The project to list HMAC keys for, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final ListHmacKeysPagedResponse listHmacKeys(ProjectName project) {
@@ -3106,7 +3197,9 @@ public final ListHmacKeysPagedResponse listHmacKeys(ProjectName project) {
    * }
    * }</pre>
    *
-   * @param project Required. The project id to list HMAC keys for.
+   * @param project Required. The project to list HMAC keys for, in the format of
+   *     "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can be the project ID or
+   *     project number.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final ListHmacKeysPagedResponse listHmacKeys(String project) {
@@ -3233,7 +3326,8 @@ public final UnaryCallable<ListHmacKeysRequest, ListHmacKeysResponse> listHmacKe
    * @param hmacKey Required. The HMAC key to update. If present, the hmac_key's `id` field will be
    *     used to identify the key. Otherwise, the hmac_key's access_id and project fields will be
    *     used to identify the key.
-   * @param updateMask Update mask for hmac_key.
+   * @param updateMask Update mask for hmac_key. Not specifying any fields will mean only the
+   *     `state` field is updated to the value specified in `hmac_key`.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final HmacKeyMetadata updateHmacKey(HmacKeyMetadata hmacKey, FieldMask updateMask) {
diff --git a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
index 3800fce4b..43c6e8552 100644
--- a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
+++ b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageSettings.java
@@ -162,6 +162,12 @@ public UnaryCallSettings<DeleteObjectRequest, Empty> deleteObjectSettings() {
     return ((StorageStubSettings) getStubSettings()).deleteObjectSettings();
   }
 
+  /** Returns the object with the settings used for calls to cancelResumableWrite. */
+  public UnaryCallSettings<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteSettings() {
+    return ((StorageStubSettings) getStubSettings()).cancelResumableWriteSettings();
+  }
+
   /** Returns the object with the settings used for calls to getObject. */
   public UnaryCallSettings<GetObjectRequest, Object> getObjectSettings() {
     return ((StorageStubSettings) getStubSettings()).getObjectSettings();
@@ -434,6 +440,12 @@ public UnaryCallSettings.Builder<DeleteObjectRequest, Empty> deleteObjectSetting
       return getStubSettingsBuilder().deleteObjectSettings();
     }
 
+    /** Returns the builder for the settings used for calls to cancelResumableWrite. */
+    public UnaryCallSettings.Builder<CancelResumableWriteRequest, CancelResumableWriteResponse>
+        cancelResumableWriteSettings() {
+      return getStubSettingsBuilder().cancelResumableWriteSettings();
+    }
+
     /** Returns the builder for the settings used for calls to getObject. */
     public UnaryCallSettings.Builder<GetObjectRequest, Object> getObjectSettings() {
       return getStubSettingsBuilder().getObjectSettings();
diff --git a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
index 2239a2ae9..403ce80f3 100644
--- a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
+++ b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/GrpcStorageStub.java
@@ -27,8 +27,10 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.ClientStreamingCallable;
+import com.google.api.gax.rpc.RequestParamsBuilder;
 import com.google.api.gax.rpc.ServerStreamingCallable;
 import com.google.api.gax.rpc.UnaryCallable;
+import com.google.api.pathtemplate.PathTemplate;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
 import com.google.iam.v1.SetIamPolicyRequest;
@@ -37,6 +39,8 @@
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
 import com.google.storage.v2.Bucket;
+import com.google.storage.v2.CancelResumableWriteRequest;
+import com.google.storage.v2.CancelResumableWriteResponse;
 import com.google.storage.v2.ComposeObjectRequest;
 import com.google.storage.v2.CreateBucketRequest;
 import com.google.storage.v2.CreateHmacKeyRequest;
@@ -229,6 +233,17 @@ public class GrpcStorageStub extends StorageStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Empty.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteMethodDescriptor =
+          MethodDescriptor.<CancelResumableWriteRequest, CancelResumableWriteResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.storage.v2.Storage/CancelResumableWrite")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(CancelResumableWriteRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(CancelResumableWriteResponse.getDefaultInstance()))
+              .build();
+
   private static final MethodDescriptor<GetObjectRequest, Object> getObjectMethodDescriptor =
       MethodDescriptor.<GetObjectRequest, Object>newBuilder()
           .setType(MethodDescriptor.MethodType.UNARY)
@@ -386,6 +401,8 @@ public class GrpcStorageStub extends StorageStub {
       listNotificationsPagedCallable;
   private final UnaryCallable<ComposeObjectRequest, Object> composeObjectCallable;
   private final UnaryCallable<DeleteObjectRequest, Empty> deleteObjectCallable;
+  private final UnaryCallable<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteCallable;
   private final UnaryCallable<GetObjectRequest, Object> getObjectCallable;
   private final ServerStreamingCallable<ReadObjectRequest, ReadObjectResponse> readObjectCallable;
   private final UnaryCallable<UpdateObjectRequest, Object> updateObjectCallable;
@@ -412,6 +429,59 @@ public class GrpcStorageStub extends StorageStub {
   private final GrpcOperationsStub operationsStub;
   private final GrpcStubCallableFactory callableFactory;
 
+  private static final PathTemplate DELETE_BUCKET_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate GET_BUCKET_0_PATH_TEMPLATE = PathTemplate.create("{bucket=**}");
+  private static final PathTemplate LOCK_BUCKET_RETENTION_POLICY_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate GET_IAM_POLICY_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate GET_IAM_POLICY_1_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/objects/**");
+  private static final PathTemplate SET_IAM_POLICY_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate SET_IAM_POLICY_1_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/objects/**");
+  private static final PathTemplate TEST_IAM_PERMISSIONS_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate TEST_IAM_PERMISSIONS_1_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/objects/**");
+  private static final PathTemplate UPDATE_BUCKET_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate DELETE_NOTIFICATION_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/**");
+  private static final PathTemplate GET_NOTIFICATION_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/**");
+  private static final PathTemplate CREATE_NOTIFICATION_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate LIST_NOTIFICATIONS_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate COMPOSE_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate DELETE_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate CANCEL_RESUMABLE_WRITE_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/**");
+  private static final PathTemplate GET_OBJECT_0_PATH_TEMPLATE = PathTemplate.create("{bucket=**}");
+  private static final PathTemplate READ_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate UPDATE_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate WRITE_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate WRITE_OBJECT_1_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/**");
+  private static final PathTemplate LIST_OBJECTS_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate REWRITE_OBJECT_0_PATH_TEMPLATE =
+      PathTemplate.create("{source_bucket=**}");
+  private static final PathTemplate REWRITE_OBJECT_1_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate START_RESUMABLE_WRITE_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=**}");
+  private static final PathTemplate QUERY_WRITE_STATUS_0_PATH_TEMPLATE =
+      PathTemplate.create("{bucket=projects/*/buckets/*}/**");
+
   public static final GrpcStorageStub create(StorageStubSettings settings) throws IOException {
     return new GrpcStorageStub(settings, ClientContext.create(settings));
   }
@@ -450,10 +520,22 @@ protected GrpcStorageStub(
     GrpcCallSettings<DeleteBucketRequest, Empty> deleteBucketTransportSettings =
         GrpcCallSettings.<DeleteBucketRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteBucketMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getName(), "bucket", DELETE_BUCKET_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<GetBucketRequest, Bucket> getBucketTransportSettings =
         GrpcCallSettings.<GetBucketRequest, Bucket>newBuilder()
             .setMethodDescriptor(getBucketMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getName(), "bucket", GET_BUCKET_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<CreateBucketRequest, Bucket> createBucketTransportSettings =
         GrpcCallSettings.<CreateBucketRequest, Bucket>newBuilder()
@@ -467,82 +549,245 @@ protected GrpcStorageStub(
         lockBucketRetentionPolicyTransportSettings =
             GrpcCallSettings.<LockBucketRetentionPolicyRequest, Bucket>newBuilder()
                 .setMethodDescriptor(lockBucketRetentionPolicyMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add(
+                          request.getBucket(),
+                          "bucket",
+                          LOCK_BUCKET_RETENTION_POLICY_0_PATH_TEMPLATE);
+                      return builder.build();
+                    })
                 .build();
     GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
         GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
             .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getResource(), "bucket", GET_IAM_POLICY_0_PATH_TEMPLATE);
+                  builder.add(request.getResource(), "bucket", GET_IAM_POLICY_1_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
         GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
             .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getResource(), "bucket", SET_IAM_POLICY_0_PATH_TEMPLATE);
+                  builder.add(request.getResource(), "bucket", SET_IAM_POLICY_1_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
         testIamPermissionsTransportSettings =
             GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
                 .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add(
+                          request.getResource(), "bucket", TEST_IAM_PERMISSIONS_0_PATH_TEMPLATE);
+                      builder.add(
+                          request.getResource(), "bucket", TEST_IAM_PERMISSIONS_1_PATH_TEMPLATE);
+                      return builder.build();
+                    })
                 .build();
     GrpcCallSettings<UpdateBucketRequest, Bucket> updateBucketTransportSettings =
         GrpcCallSettings.<UpdateBucketRequest, Bucket>newBuilder()
             .setMethodDescriptor(updateBucketMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  if (request.getBucket() != null) {
+                    builder.add(
+                        request.getBucket().getName(), "bucket", UPDATE_BUCKET_0_PATH_TEMPLATE);
+                  }
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<DeleteNotificationRequest, Empty> deleteNotificationTransportSettings =
         GrpcCallSettings.<DeleteNotificationRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteNotificationMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getName(), "bucket", DELETE_NOTIFICATION_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<GetNotificationRequest, Notification> getNotificationTransportSettings =
         GrpcCallSettings.<GetNotificationRequest, Notification>newBuilder()
             .setMethodDescriptor(getNotificationMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getName(), "bucket", GET_NOTIFICATION_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<CreateNotificationRequest, Notification> createNotificationTransportSettings =
         GrpcCallSettings.<CreateNotificationRequest, Notification>newBuilder()
             .setMethodDescriptor(createNotificationMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getParent(), "bucket", CREATE_NOTIFICATION_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<ListNotificationsRequest, ListNotificationsResponse>
         listNotificationsTransportSettings =
             GrpcCallSettings.<ListNotificationsRequest, ListNotificationsResponse>newBuilder()
                 .setMethodDescriptor(listNotificationsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add(
+                          request.getParent(), "bucket", LIST_NOTIFICATIONS_0_PATH_TEMPLATE);
+                      return builder.build();
+                    })
                 .build();
     GrpcCallSettings<ComposeObjectRequest, Object> composeObjectTransportSettings =
         GrpcCallSettings.<ComposeObjectRequest, Object>newBuilder()
             .setMethodDescriptor(composeObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  if (request.getDestination() != null) {
+                    builder.add(
+                        request.getDestination().getBucket(),
+                        "bucket",
+                        COMPOSE_OBJECT_0_PATH_TEMPLATE);
+                  }
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<DeleteObjectRequest, Empty> deleteObjectTransportSettings =
         GrpcCallSettings.<DeleteObjectRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getBucket(), "bucket", DELETE_OBJECT_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
+    GrpcCallSettings<CancelResumableWriteRequest, CancelResumableWriteResponse>
+        cancelResumableWriteTransportSettings =
+            GrpcCallSettings.<CancelResumableWriteRequest, CancelResumableWriteResponse>newBuilder()
+                .setMethodDescriptor(cancelResumableWriteMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add(
+                          request.getUploadId(), "bucket", CANCEL_RESUMABLE_WRITE_0_PATH_TEMPLATE);
+                      return builder.build();
+                    })
+                .build();
     GrpcCallSettings<GetObjectRequest, Object> getObjectTransportSettings =
         GrpcCallSettings.<GetObjectRequest, Object>newBuilder()
             .setMethodDescriptor(getObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getBucket(), "bucket", GET_OBJECT_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<ReadObjectRequest, ReadObjectResponse> readObjectTransportSettings =
         GrpcCallSettings.<ReadObjectRequest, ReadObjectResponse>newBuilder()
             .setMethodDescriptor(readObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getBucket(), "bucket", READ_OBJECT_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<UpdateObjectRequest, Object> updateObjectTransportSettings =
         GrpcCallSettings.<UpdateObjectRequest, Object>newBuilder()
             .setMethodDescriptor(updateObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  if (request.getObject() != null) {
+                    builder.add(
+                        request.getObject().getBucket(), "bucket", UPDATE_OBJECT_0_PATH_TEMPLATE);
+                  }
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<WriteObjectRequest, WriteObjectResponse> writeObjectTransportSettings =
         GrpcCallSettings.<WriteObjectRequest, WriteObjectResponse>newBuilder()
             .setMethodDescriptor(writeObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  if (request.getWriteObjectSpec() != null
+                      && request.getWriteObjectSpec().getResource() != null) {
+                    builder.add(
+                        request.getWriteObjectSpec().getResource().getBucket(),
+                        "bucket",
+                        WRITE_OBJECT_0_PATH_TEMPLATE);
+                  }
+                  builder.add(request.getUploadId(), "bucket", WRITE_OBJECT_1_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<ListObjectsRequest, ListObjectsResponse> listObjectsTransportSettings =
         GrpcCallSettings.<ListObjectsRequest, ListObjectsResponse>newBuilder()
             .setMethodDescriptor(listObjectsMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(request.getParent(), "bucket", LIST_OBJECTS_0_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<RewriteObjectRequest, RewriteResponse> rewriteObjectTransportSettings =
         GrpcCallSettings.<RewriteObjectRequest, RewriteResponse>newBuilder()
             .setMethodDescriptor(rewriteObjectMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add(
+                      request.getSourceBucket(), "source_bucket", REWRITE_OBJECT_0_PATH_TEMPLATE);
+                  builder.add(
+                      request.getDestinationBucket(), "bucket", REWRITE_OBJECT_1_PATH_TEMPLATE);
+                  return builder.build();
+                })
             .build();
     GrpcCallSettings<StartResumableWriteRequest, StartResumableWriteResponse>
         startResumableWriteTransportSettings =
             GrpcCallSettings.<StartResumableWriteRequest, StartResumableWriteResponse>newBuilder()
                 .setMethodDescriptor(startResumableWriteMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      if (request.getWriteObjectSpec() != null
+                          && request.getWriteObjectSpec().getResource() != null) {
+                        builder.add(
+                            request.getWriteObjectSpec().getResource().getBucket(),
+                            "bucket",
+                            START_RESUMABLE_WRITE_0_PATH_TEMPLATE);
+                      }
+                      return builder.build();
+                    })
                 .build();
     GrpcCallSettings<QueryWriteStatusRequest, QueryWriteStatusResponse>
         queryWriteStatusTransportSettings =
             GrpcCallSettings.<QueryWriteStatusRequest, QueryWriteStatusResponse>newBuilder()
                 .setMethodDescriptor(queryWriteStatusMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add(
+                          request.getUploadId(), "bucket", QUERY_WRITE_STATUS_0_PATH_TEMPLATE);
+                      return builder.build();
+                    })
                 .build();
     GrpcCallSettings<GetServiceAccountRequest, ServiceAccount> getServiceAccountTransportSettings =
         GrpcCallSettings.<GetServiceAccountRequest, ServiceAccount>newBuilder()
@@ -632,6 +877,11 @@ protected GrpcStorageStub(
     this.deleteObjectCallable =
         callableFactory.createUnaryCallable(
             deleteObjectTransportSettings, settings.deleteObjectSettings(), clientContext);
+    this.cancelResumableWriteCallable =
+        callableFactory.createUnaryCallable(
+            cancelResumableWriteTransportSettings,
+            settings.cancelResumableWriteSettings(),
+            clientContext);
     this.getObjectCallable =
         callableFactory.createUnaryCallable(
             getObjectTransportSettings, settings.getObjectSettings(), clientContext);
@@ -782,6 +1032,12 @@ public UnaryCallable<DeleteObjectRequest, Empty> deleteObjectCallable() {
     return deleteObjectCallable;
   }
 
+  @Override
+  public UnaryCallable<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteCallable() {
+    return cancelResumableWriteCallable;
+  }
+
   @Override
   public UnaryCallable<GetObjectRequest, Object> getObjectCallable() {
     return getObjectCallable;
diff --git a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
index 04ac9d3ba..c9562ed98 100644
--- a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
+++ b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStub.java
@@ -32,6 +32,8 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.storage.v2.Bucket;
+import com.google.storage.v2.CancelResumableWriteRequest;
+import com.google.storage.v2.CancelResumableWriteResponse;
 import com.google.storage.v2.ComposeObjectRequest;
 import com.google.storage.v2.CreateBucketRequest;
 import com.google.storage.v2.CreateHmacKeyRequest;
@@ -155,6 +157,11 @@ public UnaryCallable<DeleteObjectRequest, Empty> deleteObjectCallable() {
     throw new UnsupportedOperationException("Not implemented: deleteObjectCallable()");
   }
 
+  public UnaryCallable<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteCallable() {
+    throw new UnsupportedOperationException("Not implemented: cancelResumableWriteCallable()");
+  }
+
   public UnaryCallable<GetObjectRequest, Object> getObjectCallable() {
     throw new UnsupportedOperationException("Not implemented: getObjectCallable()");
   }
diff --git a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
index 78d8bae91..c49a9d89a 100644
--- a/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
+++ b/gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/stub/StorageStubSettings.java
@@ -59,6 +59,8 @@
 import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.storage.v2.Bucket;
+import com.google.storage.v2.CancelResumableWriteRequest;
+import com.google.storage.v2.CancelResumableWriteResponse;
 import com.google.storage.v2.ComposeObjectRequest;
 import com.google.storage.v2.CreateBucketRequest;
 import com.google.storage.v2.CreateHmacKeyRequest;
@@ -170,6 +172,8 @@ public class StorageStubSettings extends StubSettings<StorageStubSettings> {
       listNotificationsSettings;
   private final UnaryCallSettings<ComposeObjectRequest, Object> composeObjectSettings;
   private final UnaryCallSettings<DeleteObjectRequest, Empty> deleteObjectSettings;
+  private final UnaryCallSettings<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteSettings;
   private final UnaryCallSettings<GetObjectRequest, Object> getObjectSettings;
   private final ServerStreamingCallSettings<ReadObjectRequest, ReadObjectResponse>
       readObjectSettings;
@@ -494,6 +498,12 @@ public UnaryCallSettings<DeleteObjectRequest, Empty> deleteObjectSettings() {
     return deleteObjectSettings;
   }
 
+  /** Returns the object with the settings used for calls to cancelResumableWrite. */
+  public UnaryCallSettings<CancelResumableWriteRequest, CancelResumableWriteResponse>
+      cancelResumableWriteSettings() {
+    return cancelResumableWriteSettings;
+  }
+
   /** Returns the object with the settings used for calls to getObject. */
   public UnaryCallSettings<GetObjectRequest, Object> getObjectSettings() {
     return getObjectSettings;
@@ -687,6 +697,7 @@ protected StorageStubSettings(Builder settingsBuilder) throws IOException {
     listNotificationsSettings = settingsBuilder.listNotificationsSettings().build();
     composeObjectSettings = settingsBuilder.composeObjectSettings().build();
     deleteObjectSettings = settingsBuilder.deleteObjectSettings().build();
+    cancelResumableWriteSettings = settingsBuilder.cancelResumableWriteSettings().build();
     getObjectSettings = settingsBuilder.getObjectSettings().build();
     readObjectSettings = settingsBuilder.readObjectSettings().build();
     updateObjectSettings = settingsBuilder.updateObjectSettings().build();
@@ -730,6 +741,9 @@ public static class Builder extends StubSettings.Builder<StorageStubSettings, Bu
         listNotificationsSettings;
     private final UnaryCallSettings.Builder<ComposeObjectRequest, Object> composeObjectSettings;
     private final UnaryCallSettings.Builder<DeleteObjectRequest, Empty> deleteObjectSettings;
+    private final UnaryCallSettings.Builder<
+            CancelResumableWriteRequest, CancelResumableWriteResponse>
+        cancelResumableWriteSettings;
     private final UnaryCallSettings.Builder<GetObjectRequest, Object> getObjectSettings;
     private final ServerStreamingCallSettings.Builder<ReadObjectRequest, ReadObjectResponse>
         readObjectSettings;
@@ -811,6 +825,7 @@ protected Builder(ClientContext clientContext) {
       listNotificationsSettings = PagedCallSettings.newBuilder(LIST_NOTIFICATIONS_PAGE_STR_FACT);
       composeObjectSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       deleteObjectSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      cancelResumableWriteSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       getObjectSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       readObjectSettings = ServerStreamingCallSettings.newBuilder();
       updateObjectSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
@@ -843,6 +858,7 @@ protected Builder(ClientContext clientContext) {
               listNotificationsSettings,
               composeObjectSettings,
               deleteObjectSettings,
+              cancelResumableWriteSettings,
               getObjectSettings,
               updateObjectSettings,
               listObjectsSettings,
@@ -876,6 +892,7 @@ protected Builder(StorageStubSettings settings) {
       listNotificationsSettings = settings.listNotificationsSettings.toBuilder();
       composeObjectSettings = settings.composeObjectSettings.toBuilder();
       deleteObjectSettings = settings.deleteObjectSettings.toBuilder();
+      cancelResumableWriteSettings = settings.cancelResumableWriteSettings.toBuilder();
       getObjectSettings = settings.getObjectSettings.toBuilder();
       readObjectSettings = settings.readObjectSettings.toBuilder();
       updateObjectSettings = settings.updateObjectSettings.toBuilder();
@@ -908,6 +925,7 @@ protected Builder(StorageStubSettings settings) {
               listNotificationsSettings,
               composeObjectSettings,
               deleteObjectSettings,
+              cancelResumableWriteSettings,
               getObjectSettings,
               updateObjectSettings,
               listObjectsSettings,
@@ -1024,6 +1042,11 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("retry_policy_0_params"));
 
+      builder
+          .cancelResumableWriteSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("retry_policy_0_params"));
+
       builder
           .getObjectSettings()
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
@@ -1191,6 +1214,12 @@ public UnaryCallSettings.Builder<DeleteObjectRequest, Empty> deleteObjectSetting
       return deleteObjectSettings;
     }
 
+    /** Returns the builder for the settings used for calls to cancelResumableWrite. */
+    public UnaryCallSettings.Builder<CancelResumableWriteRequest, CancelResumableWriteResponse>
+        cancelResumableWriteSettings() {
+      return cancelResumableWriteSettings;
+    }
+
     /** Returns the builder for the settings used for calls to getObject. */
     public UnaryCallSettings.Builder<GetObjectRequest, Object> getObjectSettings() {
       return getObjectSettings;
diff --git a/gapic-google-cloud-storage-v2/src/main/resources/com/google/storage/v2/gapic_metadata.json b/gapic-google-cloud-storage-v2/src/main/resources/com/google/storage/v2/gapic_metadata.json
index 5d16f3131..9442f7115 100644
--- a/gapic-google-cloud-storage-v2/src/main/resources/com/google/storage/v2/gapic_metadata.json
+++ b/gapic-google-cloud-storage-v2/src/main/resources/com/google/storage/v2/gapic_metadata.json
@@ -10,6 +10,9 @@
         "grpc": {
           "libraryClient": "StorageClient",
           "rpcs": {
+            "CancelResumableWrite": {
+              "methods": ["cancelResumableWrite", "cancelResumableWrite", "cancelResumableWriteCallable"]
+            },
             "ComposeObject": {
               "methods": ["composeObject", "composeObjectCallable"]
             },
diff --git a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/MockStorageImpl.java b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/MockStorageImpl.java
index ba41a020a..f9781c107 100644
--- a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/MockStorageImpl.java
+++ b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/MockStorageImpl.java
@@ -373,6 +373,28 @@ public void deleteObject(DeleteObjectRequest request, StreamObserver<Empty> resp
     }
   }
 
+  @Override
+  public void cancelResumableWrite(
+      CancelResumableWriteRequest request,
+      StreamObserver<CancelResumableWriteResponse> responseObserver) {
+    java.lang.Object response = responses.poll();
+    if (response instanceof CancelResumableWriteResponse) {
+      requests.add(request);
+      responseObserver.onNext(((CancelResumableWriteResponse) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method CancelResumableWrite, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  CancelResumableWriteResponse.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
+
   @Override
   public void getObject(GetObjectRequest request, StreamObserver<Object> responseObserver) {
     java.lang.Object response = responses.poll();
diff --git a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientHttpJsonTest.java b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientHttpJsonTest.java
index 8ccc5a0f4..5b599f062 100644
--- a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientHttpJsonTest.java
+++ b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientHttpJsonTest.java
@@ -151,6 +151,12 @@ public void deleteObjectUnsupportedMethodTest() throws Exception {
     // This empty test is generated for technical reasons.
   }
 
+  @Test
+  public void cancelResumableWriteUnsupportedMethodTest() throws Exception {
+    // The cancelResumableWrite() method is not supported in REST transport.
+    // This empty test is generated for technical reasons.
+  }
+
   @Test
   public void getObjectUnsupportedMethodTest() throws Exception {
     // The getObject() method is not supported in REST transport.
diff --git a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientTest.java b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientTest.java
index 5d8bd4159..b4a7c6ddf 100644
--- a/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientTest.java
+++ b/gapic-google-cloud-storage-v2/src/test/java/com/google/storage/v2/StorageClientTest.java
@@ -1495,6 +1495,43 @@ public void deleteObjectExceptionTest2() throws Exception {
     }
   }
 
+  @Test
+  public void cancelResumableWriteTest() throws Exception {
+    CancelResumableWriteResponse expectedResponse =
+        CancelResumableWriteResponse.newBuilder().build();
+    mockStorage.addResponse(expectedResponse);
+
+    String uploadId = "uploadId1563990780";
+
+    CancelResumableWriteResponse actualResponse = client.cancelResumableWrite(uploadId);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockStorage.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    CancelResumableWriteRequest actualRequest =
+        ((CancelResumableWriteRequest) actualRequests.get(0));
+
+    Assert.assertEquals(uploadId, actualRequest.getUploadId());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void cancelResumableWriteExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockStorage.addException(exception);
+
+    try {
+      String uploadId = "uploadId1563990780";
+      client.cancelResumableWrite(uploadId);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
   @Test
   public void getObjectTest() throws Exception {
     Object expectedResponse =
diff --git a/grpc-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageGrpc.java b/grpc-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageGrpc.java
index 9ad354991..74422ea15 100644
--- a/grpc-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageGrpc.java
+++ b/grpc-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageGrpc.java
@@ -663,6 +663,54 @@ private StorageGrpc() {}
     return getDeleteObjectMethod;
   }
 
+  private static volatile io.grpc.MethodDescriptor<
+          com.google.storage.v2.CancelResumableWriteRequest,
+          com.google.storage.v2.CancelResumableWriteResponse>
+      getCancelResumableWriteMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "CancelResumableWrite",
+      requestType = com.google.storage.v2.CancelResumableWriteRequest.class,
+      responseType = com.google.storage.v2.CancelResumableWriteResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<
+          com.google.storage.v2.CancelResumableWriteRequest,
+          com.google.storage.v2.CancelResumableWriteResponse>
+      getCancelResumableWriteMethod() {
+    io.grpc.MethodDescriptor<
+            com.google.storage.v2.CancelResumableWriteRequest,
+            com.google.storage.v2.CancelResumableWriteResponse>
+        getCancelResumableWriteMethod;
+    if ((getCancelResumableWriteMethod = StorageGrpc.getCancelResumableWriteMethod) == null) {
+      synchronized (StorageGrpc.class) {
+        if ((getCancelResumableWriteMethod = StorageGrpc.getCancelResumableWriteMethod) == null) {
+          StorageGrpc.getCancelResumableWriteMethod =
+              getCancelResumableWriteMethod =
+                  io.grpc.MethodDescriptor
+                      .<com.google.storage.v2.CancelResumableWriteRequest,
+                          com.google.storage.v2.CancelResumableWriteResponse>
+                          newBuilder()
+                      .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+                      .setFullMethodName(
+                          generateFullMethodName(SERVICE_NAME, "CancelResumableWrite"))
+                      .setSampledToLocalTracing(true)
+                      .setRequestMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.storage.v2.CancelResumableWriteRequest
+                                  .getDefaultInstance()))
+                      .setResponseMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.storage.v2.CancelResumableWriteResponse
+                                  .getDefaultInstance()))
+                      .setSchemaDescriptor(
+                          new StorageMethodDescriptorSupplier("CancelResumableWrite"))
+                      .build();
+        }
+      }
+    }
+    return getCancelResumableWriteMethod;
+  }
+
   private static volatile io.grpc.MethodDescriptor<
           com.google.storage.v2.GetObjectRequest, com.google.storage.v2.Object>
       getGetObjectMethod;
@@ -1381,7 +1429,7 @@ public void lockBucketRetentionPolicy(
      *
      *
      * <pre>
-     * Gets the IAM policy for a specified bucket.
+     * Gets the IAM policy for a specified bucket or object.
      * </pre>
      */
     public void getIamPolicy(
@@ -1395,7 +1443,7 @@ public void getIamPolicy(
      *
      *
      * <pre>
-     * Updates an IAM policy for the specified bucket.
+     * Updates an IAM policy for the specified bucket or object.
      * </pre>
      */
     public void setIamPolicy(
@@ -1409,7 +1457,7 @@ public void setIamPolicy(
      *
      *
      * <pre>
-     * Tests a set of permissions on the given bucket to see which, if
+     * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
      * </pre>
      */
@@ -1515,8 +1563,7 @@ public void composeObject(
      *
      * <pre>
      * Deletes an object and its metadata. Deletions are permanent if versioning
-     * is not enabled for the bucket, or if the `generation` parameter
-     * is used.
+     * is not enabled for the bucket, or if the `generation` parameter is used.
      * </pre>
      */
     public void deleteObject(
@@ -1526,6 +1573,21 @@ public void deleteObject(
           getDeleteObjectMethod(), responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Cancels an in-progress resumable upload.
+     * </pre>
+     */
+    public void cancelResumableWrite(
+        com.google.storage.v2.CancelResumableWriteRequest request,
+        io.grpc.stub.StreamObserver<com.google.storage.v2.CancelResumableWriteResponse>
+            responseObserver) {
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
+          getCancelResumableWriteMethod(), responseObserver);
+    }
+
     /**
      *
      *
@@ -1876,6 +1938,13 @@ public final io.grpc.ServerServiceDefinition bindService() {
                   new MethodHandlers<
                       com.google.storage.v2.DeleteObjectRequest, com.google.protobuf.Empty>(
                       this, METHODID_DELETE_OBJECT)))
+          .addMethod(
+              getCancelResumableWriteMethod(),
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
+                  new MethodHandlers<
+                      com.google.storage.v2.CancelResumableWriteRequest,
+                      com.google.storage.v2.CancelResumableWriteResponse>(
+                      this, METHODID_CANCEL_RESUMABLE_WRITE)))
           .addMethod(
               getGetObjectMethod(),
               io.grpc.stub.ServerCalls.asyncUnaryCall(
@@ -2082,7 +2151,7 @@ public void lockBucketRetentionPolicy(
      *
      *
      * <pre>
-     * Gets the IAM policy for a specified bucket.
+     * Gets the IAM policy for a specified bucket or object.
      * </pre>
      */
     public void getIamPolicy(
@@ -2098,7 +2167,7 @@ public void getIamPolicy(
      *
      *
      * <pre>
-     * Updates an IAM policy for the specified bucket.
+     * Updates an IAM policy for the specified bucket or object.
      * </pre>
      */
     public void setIamPolicy(
@@ -2114,7 +2183,7 @@ public void setIamPolicy(
      *
      *
      * <pre>
-     * Tests a set of permissions on the given bucket to see which, if
+     * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
      * </pre>
      */
@@ -2234,8 +2303,7 @@ public void composeObject(
      *
      * <pre>
      * Deletes an object and its metadata. Deletions are permanent if versioning
-     * is not enabled for the bucket, or if the `generation` parameter
-     * is used.
+     * is not enabled for the bucket, or if the `generation` parameter is used.
      * </pre>
      */
     public void deleteObject(
@@ -2247,6 +2315,23 @@ public void deleteObject(
           responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Cancels an in-progress resumable upload.
+     * </pre>
+     */
+    public void cancelResumableWrite(
+        com.google.storage.v2.CancelResumableWriteRequest request,
+        io.grpc.stub.StreamObserver<com.google.storage.v2.CancelResumableWriteResponse>
+            responseObserver) {
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
+          getChannel().newCall(getCancelResumableWriteMethod(), getCallOptions()),
+          request,
+          responseObserver);
+    }
+
     /**
      *
      *
@@ -2629,7 +2714,7 @@ public com.google.storage.v2.Bucket lockBucketRetentionPolicy(
      *
      *
      * <pre>
-     * Gets the IAM policy for a specified bucket.
+     * Gets the IAM policy for a specified bucket or object.
      * </pre>
      */
     public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request) {
@@ -2641,7 +2726,7 @@ public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyReque
      *
      *
      * <pre>
-     * Updates an IAM policy for the specified bucket.
+     * Updates an IAM policy for the specified bucket or object.
      * </pre>
      */
     public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request) {
@@ -2653,7 +2738,7 @@ public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyReque
      *
      *
      * <pre>
-     * Tests a set of permissions on the given bucket to see which, if
+     * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
      * </pre>
      */
@@ -2750,8 +2835,7 @@ public com.google.storage.v2.Object composeObject(
      *
      * <pre>
      * Deletes an object and its metadata. Deletions are permanent if versioning
-     * is not enabled for the bucket, or if the `generation` parameter
-     * is used.
+     * is not enabled for the bucket, or if the `generation` parameter is used.
      * </pre>
      */
     public com.google.protobuf.Empty deleteObject(
@@ -2760,6 +2844,19 @@ public com.google.protobuf.Empty deleteObject(
           getChannel(), getDeleteObjectMethod(), getCallOptions(), request);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Cancels an in-progress resumable upload.
+     * </pre>
+     */
+    public com.google.storage.v2.CancelResumableWriteResponse cancelResumableWrite(
+        com.google.storage.v2.CancelResumableWriteRequest request) {
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
+          getChannel(), getCancelResumableWriteMethod(), getCallOptions(), request);
+    }
+
     /**
      *
      *
@@ -3048,7 +3145,7 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      *
      * <pre>
-     * Gets the IAM policy for a specified bucket.
+     * Gets the IAM policy for a specified bucket or object.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
@@ -3061,7 +3158,7 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      *
      * <pre>
-     * Updates an IAM policy for the specified bucket.
+     * Updates an IAM policy for the specified bucket or object.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
@@ -3074,7 +3171,7 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      *
      * <pre>
-     * Tests a set of permissions on the given bucket to see which, if
+     * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
      * </pre>
      */
@@ -3173,8 +3270,7 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      * <pre>
      * Deletes an object and its metadata. Deletions are permanent if versioning
-     * is not enabled for the bucket, or if the `generation` parameter
-     * is used.
+     * is not enabled for the bucket, or if the `generation` parameter is used.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.protobuf.Empty>
@@ -3183,6 +3279,20 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
           getChannel().newCall(getDeleteObjectMethod(), getCallOptions()), request);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Cancels an in-progress resumable upload.
+     * </pre>
+     */
+    public com.google.common.util.concurrent.ListenableFuture<
+            com.google.storage.v2.CancelResumableWriteResponse>
+        cancelResumableWrite(com.google.storage.v2.CancelResumableWriteRequest request) {
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
+          getChannel().newCall(getCancelResumableWriteMethod(), getCallOptions()), request);
+    }
+
     /**
      *
      *
@@ -3374,20 +3484,21 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
   private static final int METHODID_LIST_NOTIFICATIONS = 12;
   private static final int METHODID_COMPOSE_OBJECT = 13;
   private static final int METHODID_DELETE_OBJECT = 14;
-  private static final int METHODID_GET_OBJECT = 15;
-  private static final int METHODID_READ_OBJECT = 16;
-  private static final int METHODID_UPDATE_OBJECT = 17;
-  private static final int METHODID_LIST_OBJECTS = 18;
-  private static final int METHODID_REWRITE_OBJECT = 19;
-  private static final int METHODID_START_RESUMABLE_WRITE = 20;
-  private static final int METHODID_QUERY_WRITE_STATUS = 21;
-  private static final int METHODID_GET_SERVICE_ACCOUNT = 22;
-  private static final int METHODID_CREATE_HMAC_KEY = 23;
-  private static final int METHODID_DELETE_HMAC_KEY = 24;
-  private static final int METHODID_GET_HMAC_KEY = 25;
-  private static final int METHODID_LIST_HMAC_KEYS = 26;
-  private static final int METHODID_UPDATE_HMAC_KEY = 27;
-  private static final int METHODID_WRITE_OBJECT = 28;
+  private static final int METHODID_CANCEL_RESUMABLE_WRITE = 15;
+  private static final int METHODID_GET_OBJECT = 16;
+  private static final int METHODID_READ_OBJECT = 17;
+  private static final int METHODID_UPDATE_OBJECT = 18;
+  private static final int METHODID_LIST_OBJECTS = 19;
+  private static final int METHODID_REWRITE_OBJECT = 20;
+  private static final int METHODID_START_RESUMABLE_WRITE = 21;
+  private static final int METHODID_QUERY_WRITE_STATUS = 22;
+  private static final int METHODID_GET_SERVICE_ACCOUNT = 23;
+  private static final int METHODID_CREATE_HMAC_KEY = 24;
+  private static final int METHODID_DELETE_HMAC_KEY = 25;
+  private static final int METHODID_GET_HMAC_KEY = 26;
+  private static final int METHODID_LIST_HMAC_KEYS = 27;
+  private static final int METHODID_UPDATE_HMAC_KEY = 28;
+  private static final int METHODID_WRITE_OBJECT = 29;
 
   private static final class MethodHandlers<Req, Resp>
       implements io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
@@ -3484,6 +3595,12 @@ public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserv
               (com.google.storage.v2.DeleteObjectRequest) request,
               (io.grpc.stub.StreamObserver<com.google.protobuf.Empty>) responseObserver);
           break;
+        case METHODID_CANCEL_RESUMABLE_WRITE:
+          serviceImpl.cancelResumableWrite(
+              (com.google.storage.v2.CancelResumableWriteRequest) request,
+              (io.grpc.stub.StreamObserver<com.google.storage.v2.CancelResumableWriteResponse>)
+                  responseObserver);
+          break;
         case METHODID_GET_OBJECT:
           serviceImpl.getObject(
               (com.google.storage.v2.GetObjectRequest) request,
@@ -3640,6 +3757,7 @@ public static io.grpc.ServiceDescriptor getServiceDescriptor() {
                       .addMethod(getListNotificationsMethod())
                       .addMethod(getComposeObjectMethod())
                       .addMethod(getDeleteObjectMethod())
+                      .addMethod(getCancelResumableWriteMethod())
                       .addMethod(getGetObjectMethod())
                       .addMethod(getReadObjectMethod())
                       .addMethod(getUpdateObjectMethod())
diff --git a/proto-google-cloud-storage-v2/clirr-ignored-differences.xml b/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
index 4a3695b3b..01216f0bd 100644
--- a/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
+++ b/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
@@ -1,31 +1,23 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
 <differences>
-  <!-- CommonRequestParams has been removed as a message in favor of grpc request metadata -->
-  <difference>
-    <differenceType>8001</differenceType>
-    <className>com/google/storage/v2/CommonRequestParams*</className>
-  </difference>
+  <!-- CancelResumableWrite RPC has been introduced, cleanup old upload_id parameters from DeleteObjectRequest -->
   <difference>
     <differenceType>6011</differenceType>
-    <className>com/google/storage/v2/**</className>
-    <field>COMMON_REQUEST_PARAMS_FIELD_NUMBER</field>
+    <className>com/google/storage/v2/DeleteObjectRequest</className>
+    <field>UPLOAD_ID_FIELD_NUMBER</field>
   </difference>
   <difference>
     <differenceType>7002</differenceType>
     <className>com/google/storage/v2/**</className>
-    <method>* *CommonRequestParams*(*)</method>
+    <method>* *UploadId*(*)</method>
   </difference>
 
+  <!-- Allow WriteObjectSpec.object_size to be added -->
   <difference>
     <differenceType>7012</differenceType>
-    <className>com/google/storage/v2/*OrBuilder</className>
-    <method>* *Etag*(*)</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/storage/v2/*OrBuilder</className>
-    <method>* *CustomPlacementConfig*(*)</method>
+    <className>com/google/storage/v2/WriteObjectSpecOrBuilder</className>
+    <method>* *ObjectSize()</method>
   </difference>
 
 </differences>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Bucket.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Bucket.java
index 1c12c9ddf..d6551a6fe 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Bucket.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Bucket.java
@@ -16828,7 +16828,9 @@ public com.google.protobuf.ByteString getEtagBytes() {
    *
    *
    * <pre>
-   * Immutable. The project which owns this bucket.
+   * Immutable. The project which owns this bucket, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -16853,7 +16855,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Immutable. The project which owns this bucket.
+   * Immutable. The project which owns this bucket, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -19559,7 +19563,9 @@ public Builder setEtagBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Immutable. The project which owns this bucket.
+     * Immutable. The project which owns this bucket, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -19583,7 +19589,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Immutable. The project which owns this bucket.
+     * Immutable. The project which owns this bucket, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -19607,7 +19615,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Immutable. The project which owns this bucket.
+     * Immutable. The project which owns this bucket, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -19630,7 +19640,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Immutable. The project which owns this bucket.
+     * Immutable. The project which owns this bucket, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -19649,7 +19661,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Immutable. The project which owns this bucket.
+     * Immutable. The project which owns this bucket, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketOrBuilder.java
index 50ec1b91d..26d659353 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketOrBuilder.java
@@ -110,7 +110,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Immutable. The project which owns this bucket.
+   * Immutable. The project which owns this bucket, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -124,7 +126,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Immutable. The project which owns this bucket.
+   * Immutable. The project which owns this bucket, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequest.java
new file mode 100644
index 000000000..834ab56d6
--- /dev/null
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequest.java
@@ -0,0 +1,647 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/storage/v2/storage.proto
+
+package com.google.storage.v2;
+
+/**
+ *
+ *
+ * <pre>
+ * Message for canceling an in-progress resumable upload.
+ * `upload_id` **must** be set.
+ * </pre>
+ *
+ * Protobuf type {@code google.storage.v2.CancelResumableWriteRequest}
+ */
+public final class CancelResumableWriteRequest extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.storage.v2.CancelResumableWriteRequest)
+    CancelResumableWriteRequestOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use CancelResumableWriteRequest.newBuilder() to construct.
+  private CancelResumableWriteRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private CancelResumableWriteRequest() {
+    uploadId_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new CancelResumableWriteRequest();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private CancelResumableWriteRequest(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              uploadId_ = s;
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.storage.v2.StorageProto
+        .internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.storage.v2.StorageProto
+        .internal_static_google_storage_v2_CancelResumableWriteRequest_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.storage.v2.CancelResumableWriteRequest.class,
+            com.google.storage.v2.CancelResumableWriteRequest.Builder.class);
+  }
+
+  public static final int UPLOAD_ID_FIELD_NUMBER = 1;
+  private volatile java.lang.Object uploadId_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The upload_id of the resumable upload to cancel. This should be copied
+   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * </pre>
+   *
+   * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The uploadId.
+   */
+  @java.lang.Override
+  public java.lang.String getUploadId() {
+    java.lang.Object ref = uploadId_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      uploadId_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The upload_id of the resumable upload to cancel. This should be copied
+   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * </pre>
+   *
+   * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for uploadId.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getUploadIdBytes() {
+    java.lang.Object ref = uploadId_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      uploadId_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uploadId_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, uploadId_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uploadId_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, uploadId_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.storage.v2.CancelResumableWriteRequest)) {
+      return super.equals(obj);
+    }
+    com.google.storage.v2.CancelResumableWriteRequest other =
+        (com.google.storage.v2.CancelResumableWriteRequest) obj;
+
+    if (!getUploadId().equals(other.getUploadId())) return false;
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + UPLOAD_ID_FIELD_NUMBER;
+    hash = (53 * hash) + getUploadId().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.storage.v2.CancelResumableWriteRequest prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Message for canceling an in-progress resumable upload.
+   * `upload_id` **must** be set.
+   * </pre>
+   *
+   * Protobuf type {@code google.storage.v2.CancelResumableWriteRequest}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.storage.v2.CancelResumableWriteRequest)
+      com.google.storage.v2.CancelResumableWriteRequestOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.storage.v2.CancelResumableWriteRequest.class,
+              com.google.storage.v2.CancelResumableWriteRequest.Builder.class);
+    }
+
+    // Construct using com.google.storage.v2.CancelResumableWriteRequest.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      uploadId_ = "";
+
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteRequest getDefaultInstanceForType() {
+      return com.google.storage.v2.CancelResumableWriteRequest.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteRequest build() {
+      com.google.storage.v2.CancelResumableWriteRequest result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteRequest buildPartial() {
+      com.google.storage.v2.CancelResumableWriteRequest result =
+          new com.google.storage.v2.CancelResumableWriteRequest(this);
+      result.uploadId_ = uploadId_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.storage.v2.CancelResumableWriteRequest) {
+        return mergeFrom((com.google.storage.v2.CancelResumableWriteRequest) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.storage.v2.CancelResumableWriteRequest other) {
+      if (other == com.google.storage.v2.CancelResumableWriteRequest.getDefaultInstance())
+        return this;
+      if (!other.getUploadId().isEmpty()) {
+        uploadId_ = other.uploadId_;
+        onChanged();
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.storage.v2.CancelResumableWriteRequest parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.storage.v2.CancelResumableWriteRequest) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private java.lang.Object uploadId_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The upload_id of the resumable upload to cancel. This should be copied
+     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * </pre>
+     *
+     * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The uploadId.
+     */
+    public java.lang.String getUploadId() {
+      java.lang.Object ref = uploadId_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        uploadId_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The upload_id of the resumable upload to cancel. This should be copied
+     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * </pre>
+     *
+     * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The bytes for uploadId.
+     */
+    public com.google.protobuf.ByteString getUploadIdBytes() {
+      java.lang.Object ref = uploadId_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        uploadId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The upload_id of the resumable upload to cancel. This should be copied
+     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * </pre>
+     *
+     * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The uploadId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUploadId(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      uploadId_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The upload_id of the resumable upload to cancel. This should be copied
+     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * </pre>
+     *
+     * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearUploadId() {
+
+      uploadId_ = getDefaultInstance().getUploadId();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The upload_id of the resumable upload to cancel. This should be copied
+     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * </pre>
+     *
+     * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The bytes for uploadId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUploadIdBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      uploadId_ = value;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.storage.v2.CancelResumableWriteRequest)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.storage.v2.CancelResumableWriteRequest)
+  private static final com.google.storage.v2.CancelResumableWriteRequest DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.storage.v2.CancelResumableWriteRequest();
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteRequest getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<CancelResumableWriteRequest> PARSER =
+      new com.google.protobuf.AbstractParser<CancelResumableWriteRequest>() {
+        @java.lang.Override
+        public CancelResumableWriteRequest parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new CancelResumableWriteRequest(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<CancelResumableWriteRequest> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<CancelResumableWriteRequest> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.storage.v2.CancelResumableWriteRequest getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequestOrBuilder.java
new file mode 100644
index 000000000..764914329
--- /dev/null
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteRequestOrBuilder.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/storage/v2/storage.proto
+
+package com.google.storage.v2;
+
+public interface CancelResumableWriteRequestOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.storage.v2.CancelResumableWriteRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The upload_id of the resumable upload to cancel. This should be copied
+   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * </pre>
+   *
+   * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The uploadId.
+   */
+  java.lang.String getUploadId();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The upload_id of the resumable upload to cancel. This should be copied
+   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * </pre>
+   *
+   * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for uploadId.
+   */
+  com.google.protobuf.ByteString getUploadIdBytes();
+}
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponse.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponse.java
new file mode 100644
index 000000000..b201b329c
--- /dev/null
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponse.java
@@ -0,0 +1,460 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/storage/v2/storage.proto
+
+package com.google.storage.v2;
+
+/**
+ *
+ *
+ * <pre>
+ * Empty response message for canceling an in-progress resumable upload, will be
+ * extended as needed.
+ * </pre>
+ *
+ * Protobuf type {@code google.storage.v2.CancelResumableWriteResponse}
+ */
+public final class CancelResumableWriteResponse extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.storage.v2.CancelResumableWriteResponse)
+    CancelResumableWriteResponseOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use CancelResumableWriteResponse.newBuilder() to construct.
+  private CancelResumableWriteResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private CancelResumableWriteResponse() {}
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new CancelResumableWriteResponse();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private CancelResumableWriteResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.storage.v2.StorageProto
+        .internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.storage.v2.StorageProto
+        .internal_static_google_storage_v2_CancelResumableWriteResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.storage.v2.CancelResumableWriteResponse.class,
+            com.google.storage.v2.CancelResumableWriteResponse.Builder.class);
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.storage.v2.CancelResumableWriteResponse)) {
+      return super.equals(obj);
+    }
+    com.google.storage.v2.CancelResumableWriteResponse other =
+        (com.google.storage.v2.CancelResumableWriteResponse) obj;
+
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.storage.v2.CancelResumableWriteResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Empty response message for canceling an in-progress resumable upload, will be
+   * extended as needed.
+   * </pre>
+   *
+   * Protobuf type {@code google.storage.v2.CancelResumableWriteResponse}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.storage.v2.CancelResumableWriteResponse)
+      com.google.storage.v2.CancelResumableWriteResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.storage.v2.CancelResumableWriteResponse.class,
+              com.google.storage.v2.CancelResumableWriteResponse.Builder.class);
+    }
+
+    // Construct using com.google.storage.v2.CancelResumableWriteResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.storage.v2.StorageProto
+          .internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteResponse getDefaultInstanceForType() {
+      return com.google.storage.v2.CancelResumableWriteResponse.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteResponse build() {
+      com.google.storage.v2.CancelResumableWriteResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.storage.v2.CancelResumableWriteResponse buildPartial() {
+      com.google.storage.v2.CancelResumableWriteResponse result =
+          new com.google.storage.v2.CancelResumableWriteResponse(this);
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.storage.v2.CancelResumableWriteResponse) {
+        return mergeFrom((com.google.storage.v2.CancelResumableWriteResponse) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.storage.v2.CancelResumableWriteResponse other) {
+      if (other == com.google.storage.v2.CancelResumableWriteResponse.getDefaultInstance())
+        return this;
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.storage.v2.CancelResumableWriteResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.storage.v2.CancelResumableWriteResponse) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.storage.v2.CancelResumableWriteResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.storage.v2.CancelResumableWriteResponse)
+  private static final com.google.storage.v2.CancelResumableWriteResponse DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.storage.v2.CancelResumableWriteResponse();
+  }
+
+  public static com.google.storage.v2.CancelResumableWriteResponse getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<CancelResumableWriteResponse> PARSER =
+      new com.google.protobuf.AbstractParser<CancelResumableWriteResponse>() {
+        @java.lang.Override
+        public CancelResumableWriteResponse parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new CancelResumableWriteResponse(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<CancelResumableWriteResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<CancelResumableWriteResponse> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.storage.v2.CancelResumableWriteResponse getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponseOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponseOrBuilder.java
new file mode 100644
index 000000000..f192ac86a
--- /dev/null
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CancelResumableWriteResponseOrBuilder.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/storage/v2/storage.proto
+
+package com.google.storage.v2;
+
+public interface CancelResumableWriteResponseOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.storage.v2.CancelResumableWriteResponse)
+    com.google.protobuf.MessageOrBuilder {}
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequest.java
index cd6b44f1e..312be21c1 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequest.java
@@ -127,7 +127,9 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The project that the HMAC-owning service account lives in.
+   * Required. The project that the HMAC-owning service account lives in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -152,7 +154,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Required. The project that the HMAC-owning service account lives in.
+   * Required. The project that the HMAC-owning service account lives in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -560,7 +564,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The project that the HMAC-owning service account lives in.
+     * Required. The project that the HMAC-owning service account lives in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -584,7 +590,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Required. The project that the HMAC-owning service account lives in.
+     * Required. The project that the HMAC-owning service account lives in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -608,7 +616,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Required. The project that the HMAC-owning service account lives in.
+     * Required. The project that the HMAC-owning service account lives in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -631,7 +641,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The project that the HMAC-owning service account lives in.
+     * Required. The project that the HMAC-owning service account lives in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -650,7 +662,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Required. The project that the HMAC-owning service account lives in.
+     * Required. The project that the HMAC-owning service account lives in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequestOrBuilder.java
index 2acfcdda7..a1b9cdc32 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateHmacKeyRequestOrBuilder.java
@@ -27,7 +27,9 @@ public interface CreateHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project that the HMAC-owning service account lives in.
+   * Required. The project that the HMAC-owning service account lives in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -41,7 +43,9 @@ public interface CreateHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project that the HMAC-owning service account lives in.
+   * Required. The project that the HMAC-owning service account lives in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequest.java
index 9843d7b65..3349d054e 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequest.java
@@ -176,7 +176,9 @@ public com.google.protobuf.ByteString getAccessIdBytes() {
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project that owns the HMAC key, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -201,7 +203,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project that owns the HMAC key, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -666,7 +670,9 @@ public Builder setAccessIdBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project that owns the HMAC key, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -690,7 +696,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project that owns the HMAC key, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -714,7 +722,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project that owns the HMAC key, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -737,7 +747,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project that owns the HMAC key, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -756,7 +768,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project that owns the HMAC key, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequestOrBuilder.java
index 75c0bb1a8..6a3a8308b 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteHmacKeyRequestOrBuilder.java
@@ -52,7 +52,9 @@ public interface DeleteHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project that owns the HMAC key, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -66,7 +68,9 @@ public interface DeleteHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project that owns the HMAC key, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequest.java
index 38dfd2042..97cb3a0db 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequest.java
@@ -23,7 +23,7 @@
  *
  * <pre>
  * Message for deleting an object.
- * Either `bucket` and `object` *or* `upload_id` **must** be set (but not both).
+ * `bucket` and `object` **must** be set.
  * </pre>
  *
  * Protobuf type {@code google.storage.v2.DeleteObjectRequest}
@@ -41,7 +41,6 @@ private DeleteObjectRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> bu
   private DeleteObjectRequest() {
     bucket_ = "";
     object_ = "";
-    uploadId_ = "";
   }
 
   @java.lang.Override
@@ -88,13 +87,6 @@ private DeleteObjectRequest(
               object_ = s;
               break;
             }
-          case 26:
-            {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              uploadId_ = s;
-              break;
-            }
           case 32:
             {
               generation_ = input.readInt64();
@@ -275,59 +267,6 @@ public com.google.protobuf.ByteString getObjectBytes() {
     }
   }
 
-  public static final int UPLOAD_ID_FIELD_NUMBER = 3;
-  private volatile java.lang.Object uploadId_;
-  /**
-   *
-   *
-   * <pre>
-   * The resumable upload_id of the object to delete (when deleting an
-   * in-progress resumable write). This should be copied from the `upload_id`
-   * field of `StartResumableWriteResponse`.
-   * </pre>
-   *
-   * <code>string upload_id = 3;</code>
-   *
-   * @return The uploadId.
-   */
-  @java.lang.Override
-  public java.lang.String getUploadId() {
-    java.lang.Object ref = uploadId_;
-    if (ref instanceof java.lang.String) {
-      return (java.lang.String) ref;
-    } else {
-      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-      java.lang.String s = bs.toStringUtf8();
-      uploadId_ = s;
-      return s;
-    }
-  }
-  /**
-   *
-   *
-   * <pre>
-   * The resumable upload_id of the object to delete (when deleting an
-   * in-progress resumable write). This should be copied from the `upload_id`
-   * field of `StartResumableWriteResponse`.
-   * </pre>
-   *
-   * <code>string upload_id = 3;</code>
-   *
-   * @return The bytes for uploadId.
-   */
-  @java.lang.Override
-  public com.google.protobuf.ByteString getUploadIdBytes() {
-    java.lang.Object ref = uploadId_;
-    if (ref instanceof java.lang.String) {
-      com.google.protobuf.ByteString b =
-          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-      uploadId_ = b;
-      return b;
-    } else {
-      return (com.google.protobuf.ByteString) ref;
-    }
-  }
-
   public static final int GENERATION_FIELD_NUMBER = 4;
   private long generation_;
   /**
@@ -562,9 +501,6 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(object_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, object_);
     }
-    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uploadId_)) {
-      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, uploadId_);
-    }
     if (generation_ != 0L) {
       output.writeInt64(4, generation_);
     }
@@ -598,9 +534,6 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(object_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, object_);
     }
-    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uploadId_)) {
-      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, uploadId_);
-    }
     if (generation_ != 0L) {
       size += com.google.protobuf.CodedOutputStream.computeInt64Size(4, generation_);
     }
@@ -639,7 +572,6 @@ public boolean equals(final java.lang.Object obj) {
 
     if (!getBucket().equals(other.getBucket())) return false;
     if (!getObject().equals(other.getObject())) return false;
-    if (!getUploadId().equals(other.getUploadId())) return false;
     if (getGeneration() != other.getGeneration()) return false;
     if (hasIfGenerationMatch() != other.hasIfGenerationMatch()) return false;
     if (hasIfGenerationMatch()) {
@@ -677,8 +609,6 @@ public int hashCode() {
     hash = (53 * hash) + getBucket().hashCode();
     hash = (37 * hash) + OBJECT_FIELD_NUMBER;
     hash = (53 * hash) + getObject().hashCode();
-    hash = (37 * hash) + UPLOAD_ID_FIELD_NUMBER;
-    hash = (53 * hash) + getUploadId().hashCode();
     hash = (37 * hash) + GENERATION_FIELD_NUMBER;
     hash = (53 * hash) + com.google.protobuf.Internal.hashLong(getGeneration());
     if (hasIfGenerationMatch()) {
@@ -806,7 +736,7 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    *
    * <pre>
    * Message for deleting an object.
-   * Either `bucket` and `object` *or* `upload_id` **must** be set (but not both).
+   * `bucket` and `object` **must** be set.
    * </pre>
    *
    * Protobuf type {@code google.storage.v2.DeleteObjectRequest}
@@ -851,8 +781,6 @@ public Builder clear() {
 
       object_ = "";
 
-      uploadId_ = "";
-
       generation_ = 0L;
 
       ifGenerationMatch_ = 0L;
@@ -900,7 +828,6 @@ public com.google.storage.v2.DeleteObjectRequest buildPartial() {
       int to_bitField0_ = 0;
       result.bucket_ = bucket_;
       result.object_ = object_;
-      result.uploadId_ = uploadId_;
       result.generation_ = generation_;
       if (((from_bitField0_ & 0x00000001) != 0)) {
         result.ifGenerationMatch_ = ifGenerationMatch_;
@@ -981,10 +908,6 @@ public Builder mergeFrom(com.google.storage.v2.DeleteObjectRequest other) {
         object_ = other.object_;
         onChanged();
       }
-      if (!other.getUploadId().isEmpty()) {
-        uploadId_ = other.uploadId_;
-        onChanged();
-      }
       if (other.getGeneration() != 0L) {
         setGeneration(other.getGeneration());
       }
@@ -1246,122 +1169,6 @@ public Builder setObjectBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
-    private java.lang.Object uploadId_ = "";
-    /**
-     *
-     *
-     * <pre>
-     * The resumable upload_id of the object to delete (when deleting an
-     * in-progress resumable write). This should be copied from the `upload_id`
-     * field of `StartResumableWriteResponse`.
-     * </pre>
-     *
-     * <code>string upload_id = 3;</code>
-     *
-     * @return The uploadId.
-     */
-    public java.lang.String getUploadId() {
-      java.lang.Object ref = uploadId_;
-      if (!(ref instanceof java.lang.String)) {
-        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        uploadId_ = s;
-        return s;
-      } else {
-        return (java.lang.String) ref;
-      }
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The resumable upload_id of the object to delete (when deleting an
-     * in-progress resumable write). This should be copied from the `upload_id`
-     * field of `StartResumableWriteResponse`.
-     * </pre>
-     *
-     * <code>string upload_id = 3;</code>
-     *
-     * @return The bytes for uploadId.
-     */
-    public com.google.protobuf.ByteString getUploadIdBytes() {
-      java.lang.Object ref = uploadId_;
-      if (ref instanceof String) {
-        com.google.protobuf.ByteString b =
-            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
-        uploadId_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The resumable upload_id of the object to delete (when deleting an
-     * in-progress resumable write). This should be copied from the `upload_id`
-     * field of `StartResumableWriteResponse`.
-     * </pre>
-     *
-     * <code>string upload_id = 3;</code>
-     *
-     * @param value The uploadId to set.
-     * @return This builder for chaining.
-     */
-    public Builder setUploadId(java.lang.String value) {
-      if (value == null) {
-        throw new NullPointerException();
-      }
-
-      uploadId_ = value;
-      onChanged();
-      return this;
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The resumable upload_id of the object to delete (when deleting an
-     * in-progress resumable write). This should be copied from the `upload_id`
-     * field of `StartResumableWriteResponse`.
-     * </pre>
-     *
-     * <code>string upload_id = 3;</code>
-     *
-     * @return This builder for chaining.
-     */
-    public Builder clearUploadId() {
-
-      uploadId_ = getDefaultInstance().getUploadId();
-      onChanged();
-      return this;
-    }
-    /**
-     *
-     *
-     * <pre>
-     * The resumable upload_id of the object to delete (when deleting an
-     * in-progress resumable write). This should be copied from the `upload_id`
-     * field of `StartResumableWriteResponse`.
-     * </pre>
-     *
-     * <code>string upload_id = 3;</code>
-     *
-     * @param value The bytes for uploadId to set.
-     * @return This builder for chaining.
-     */
-    public Builder setUploadIdBytes(com.google.protobuf.ByteString value) {
-      if (value == null) {
-        throw new NullPointerException();
-      }
-      checkByteStringIsUtf8(value);
-
-      uploadId_ = value;
-      onChanged();
-      return this;
-    }
-
     private long generation_;
     /**
      *
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequestOrBuilder.java
index dfd8e1f80..e0f4d1220 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequestOrBuilder.java
@@ -73,35 +73,6 @@ public interface DeleteObjectRequestOrBuilder
    */
   com.google.protobuf.ByteString getObjectBytes();
 
-  /**
-   *
-   *
-   * <pre>
-   * The resumable upload_id of the object to delete (when deleting an
-   * in-progress resumable write). This should be copied from the `upload_id`
-   * field of `StartResumableWriteResponse`.
-   * </pre>
-   *
-   * <code>string upload_id = 3;</code>
-   *
-   * @return The uploadId.
-   */
-  java.lang.String getUploadId();
-  /**
-   *
-   *
-   * <pre>
-   * The resumable upload_id of the object to delete (when deleting an
-   * in-progress resumable write). This should be copied from the `upload_id`
-   * field of `StartResumableWriteResponse`.
-   * </pre>
-   *
-   * <code>string upload_id = 3;</code>
-   *
-   * @return The bytes for uploadId.
-   */
-  com.google.protobuf.ByteString getUploadIdBytes();
-
   /**
    *
    *
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequest.java
index e004e926f..b31b10c91 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequest.java
@@ -176,7 +176,9 @@ public com.google.protobuf.ByteString getAccessIdBytes() {
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project the HMAC key lies in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -201,7 +203,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project the HMAC key lies in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -665,7 +669,9 @@ public Builder setAccessIdBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project the HMAC key lies in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -689,7 +695,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project the HMAC key lies in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -713,7 +721,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project the HMAC key lies in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -736,7 +746,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project the HMAC key lies in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -755,7 +767,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Required. The project id the HMAC key lies in.
+     * Required. The project the HMAC key lies in, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequestOrBuilder.java
index de9648046..dd96127a2 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetHmacKeyRequestOrBuilder.java
@@ -52,7 +52,9 @@ public interface GetHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project the HMAC key lies in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -66,7 +68,9 @@ public interface GetHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id the HMAC key lies in.
+   * Required. The project the HMAC key lies in, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequest.java
index be1da8e75..661c5ebcd 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequest.java
@@ -119,7 +119,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. Project ID.
+   * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -144,7 +145,8 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Required. Project ID.
+   * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -487,7 +489,8 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. Project ID.
+     * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -511,7 +514,8 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Required. Project ID.
+     * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -535,7 +539,8 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Required. Project ID.
+     * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -558,7 +563,8 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. Project ID.
+     * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -577,7 +583,8 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Required. Project ID.
+     * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequestOrBuilder.java
index 1b0cca0e9..c3a7fc00e 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/GetServiceAccountRequestOrBuilder.java
@@ -27,7 +27,8 @@ public interface GetServiceAccountRequestOrBuilder
    *
    *
    * <pre>
-   * Required. Project ID.
+   * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -41,7 +42,8 @@ public interface GetServiceAccountRequestOrBuilder
    *
    *
    * <pre>
-   * Required. Project ID.
+   * Required. Project ID, in the format of "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadata.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadata.java
index dc54e5902..8ed9fbe18 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadata.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadata.java
@@ -189,10 +189,12 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+   * Immutable. Resource name ID of the key in the format
+   * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
-   * <code>string id = 1;</code>
+   * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The id.
    */
@@ -212,10 +214,12 @@ public java.lang.String getId() {
    *
    *
    * <pre>
-   * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+   * Immutable. Resource name ID of the key in the format
+   * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
-   * <code>string id = 1;</code>
+   * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The bytes for id.
    */
@@ -238,10 +242,10 @@ public com.google.protobuf.ByteString getIdBytes() {
    *
    *
    * <pre>
-   * Globally unique id for keys.
+   * Immutable. Globally unique id for keys.
    * </pre>
    *
-   * <code>string access_id = 2;</code>
+   * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The accessId.
    */
@@ -261,10 +265,10 @@ public java.lang.String getAccessId() {
    *
    *
    * <pre>
-   * Globally unique id for keys.
+   * Immutable. Globally unique id for keys.
    * </pre>
    *
-   * <code>string access_id = 2;</code>
+   * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The bytes for accessId.
    */
@@ -287,10 +291,14 @@ public com.google.protobuf.ByteString getAccessIdBytes() {
    *
    *
    * <pre>
-   * The project ID that the hmac key is contained in.
+   * Immutable. Identifies the project that owns the service account of the specified HMAC
+   * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+   * be the project ID or project number.
    * </pre>
    *
-   * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+   * <code>
+   * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+   * </code>
    *
    * @return The project.
    */
@@ -310,10 +318,14 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * The project ID that the hmac key is contained in.
+   * Immutable. Identifies the project that owns the service account of the specified HMAC
+   * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+   * be the project ID or project number.
    * </pre>
    *
-   * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+   * <code>
+   * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+   * </code>
    *
    * @return The bytes for project.
    */
@@ -336,10 +348,10 @@ public com.google.protobuf.ByteString getProjectBytes() {
    *
    *
    * <pre>
-   * Email of the service account the key authenticates as.
+   * Output only. Email of the service account the key authenticates as.
    * </pre>
    *
-   * <code>string service_account_email = 4;</code>
+   * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
    *
    * @return The serviceAccountEmail.
    */
@@ -359,10 +371,10 @@ public java.lang.String getServiceAccountEmail() {
    *
    *
    * <pre>
-   * Email of the service account the key authenticates as.
+   * Output only. Email of the service account the key authenticates as.
    * </pre>
    *
-   * <code>string service_account_email = 4;</code>
+   * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
    *
    * @return The bytes for serviceAccountEmail.
    */
@@ -386,6 +398,7 @@ public com.google.protobuf.ByteString getServiceAccountEmailBytes() {
    *
    * <pre>
    * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+   * Writable, can be updated by UpdateHmacKey operation.
    * </pre>
    *
    * <code>string state = 5;</code>
@@ -409,6 +422,7 @@ public java.lang.String getState() {
    *
    * <pre>
    * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+   * Writable, can be updated by UpdateHmacKey operation.
    * </pre>
    *
    * <code>string state = 5;</code>
@@ -434,10 +448,11 @@ public com.google.protobuf.ByteString getStateBytes() {
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return Whether the createTime field is set.
    */
@@ -449,10 +464,11 @@ public boolean hasCreateTime() {
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return The createTime.
    */
@@ -464,10 +480,11 @@ public com.google.protobuf.Timestamp getCreateTime() {
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    */
   @java.lang.Override
   public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
@@ -480,10 +497,11 @@ public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return Whether the updateTime field is set.
    */
@@ -495,10 +513,11 @@ public boolean hasUpdateTime() {
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return The updateTime.
    */
@@ -510,10 +529,11 @@ public com.google.protobuf.Timestamp getUpdateTime() {
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    */
   @java.lang.Override
   public com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder() {
@@ -1024,10 +1044,12 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+     * Immutable. Resource name ID of the key in the format
+     * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
-     * <code>string id = 1;</code>
+     * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return The id.
      */
@@ -1046,10 +1068,12 @@ public java.lang.String getId() {
      *
      *
      * <pre>
-     * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+     * Immutable. Resource name ID of the key in the format
+     * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
-     * <code>string id = 1;</code>
+     * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return The bytes for id.
      */
@@ -1068,10 +1092,12 @@ public com.google.protobuf.ByteString getIdBytes() {
      *
      *
      * <pre>
-     * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+     * Immutable. Resource name ID of the key in the format
+     * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
-     * <code>string id = 1;</code>
+     * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @param value The id to set.
      * @return This builder for chaining.
@@ -1089,10 +1115,12 @@ public Builder setId(java.lang.String value) {
      *
      *
      * <pre>
-     * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+     * Immutable. Resource name ID of the key in the format
+     * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
-     * <code>string id = 1;</code>
+     * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return This builder for chaining.
      */
@@ -1106,10 +1134,12 @@ public Builder clearId() {
      *
      *
      * <pre>
-     * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+     * Immutable. Resource name ID of the key in the format
+     * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
-     * <code>string id = 1;</code>
+     * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @param value The bytes for id to set.
      * @return This builder for chaining.
@@ -1130,10 +1160,10 @@ public Builder setIdBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Globally unique id for keys.
+     * Immutable. Globally unique id for keys.
      * </pre>
      *
-     * <code>string access_id = 2;</code>
+     * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return The accessId.
      */
@@ -1152,10 +1182,10 @@ public java.lang.String getAccessId() {
      *
      *
      * <pre>
-     * Globally unique id for keys.
+     * Immutable. Globally unique id for keys.
      * </pre>
      *
-     * <code>string access_id = 2;</code>
+     * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return The bytes for accessId.
      */
@@ -1174,10 +1204,10 @@ public com.google.protobuf.ByteString getAccessIdBytes() {
      *
      *
      * <pre>
-     * Globally unique id for keys.
+     * Immutable. Globally unique id for keys.
      * </pre>
      *
-     * <code>string access_id = 2;</code>
+     * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @param value The accessId to set.
      * @return This builder for chaining.
@@ -1195,10 +1225,10 @@ public Builder setAccessId(java.lang.String value) {
      *
      *
      * <pre>
-     * Globally unique id for keys.
+     * Immutable. Globally unique id for keys.
      * </pre>
      *
-     * <code>string access_id = 2;</code>
+     * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @return This builder for chaining.
      */
@@ -1212,10 +1242,10 @@ public Builder clearAccessId() {
      *
      *
      * <pre>
-     * Globally unique id for keys.
+     * Immutable. Globally unique id for keys.
      * </pre>
      *
-     * <code>string access_id = 2;</code>
+     * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
      *
      * @param value The bytes for accessId to set.
      * @return This builder for chaining.
@@ -1236,10 +1266,14 @@ public Builder setAccessIdBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * The project ID that the hmac key is contained in.
+     * Immutable. Identifies the project that owns the service account of the specified HMAC
+     * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+     * be the project ID or project number.
      * </pre>
      *
-     * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+     * <code>
+     * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+     * </code>
      *
      * @return The project.
      */
@@ -1258,10 +1292,14 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * The project ID that the hmac key is contained in.
+     * Immutable. Identifies the project that owns the service account of the specified HMAC
+     * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+     * be the project ID or project number.
      * </pre>
      *
-     * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+     * <code>
+     * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+     * </code>
      *
      * @return The bytes for project.
      */
@@ -1280,10 +1318,14 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * The project ID that the hmac key is contained in.
+     * Immutable. Identifies the project that owns the service account of the specified HMAC
+     * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+     * be the project ID or project number.
      * </pre>
      *
-     * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+     * <code>
+     * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+     * </code>
      *
      * @param value The project to set.
      * @return This builder for chaining.
@@ -1301,10 +1343,14 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * The project ID that the hmac key is contained in.
+     * Immutable. Identifies the project that owns the service account of the specified HMAC
+     * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+     * be the project ID or project number.
      * </pre>
      *
-     * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+     * <code>
+     * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+     * </code>
      *
      * @return This builder for chaining.
      */
@@ -1318,10 +1364,14 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * The project ID that the hmac key is contained in.
+     * Immutable. Identifies the project that owns the service account of the specified HMAC
+     * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+     * be the project ID or project number.
      * </pre>
      *
-     * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+     * <code>
+     * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+     * </code>
      *
      * @param value The bytes for project to set.
      * @return This builder for chaining.
@@ -1342,10 +1392,10 @@ public Builder setProjectBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Email of the service account the key authenticates as.
+     * Output only. Email of the service account the key authenticates as.
      * </pre>
      *
-     * <code>string service_account_email = 4;</code>
+     * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      *
      * @return The serviceAccountEmail.
      */
@@ -1364,10 +1414,10 @@ public java.lang.String getServiceAccountEmail() {
      *
      *
      * <pre>
-     * Email of the service account the key authenticates as.
+     * Output only. Email of the service account the key authenticates as.
      * </pre>
      *
-     * <code>string service_account_email = 4;</code>
+     * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      *
      * @return The bytes for serviceAccountEmail.
      */
@@ -1386,10 +1436,10 @@ public com.google.protobuf.ByteString getServiceAccountEmailBytes() {
      *
      *
      * <pre>
-     * Email of the service account the key authenticates as.
+     * Output only. Email of the service account the key authenticates as.
      * </pre>
      *
-     * <code>string service_account_email = 4;</code>
+     * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      *
      * @param value The serviceAccountEmail to set.
      * @return This builder for chaining.
@@ -1407,10 +1457,10 @@ public Builder setServiceAccountEmail(java.lang.String value) {
      *
      *
      * <pre>
-     * Email of the service account the key authenticates as.
+     * Output only. Email of the service account the key authenticates as.
      * </pre>
      *
-     * <code>string service_account_email = 4;</code>
+     * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      *
      * @return This builder for chaining.
      */
@@ -1424,10 +1474,10 @@ public Builder clearServiceAccountEmail() {
      *
      *
      * <pre>
-     * Email of the service account the key authenticates as.
+     * Output only. Email of the service account the key authenticates as.
      * </pre>
      *
-     * <code>string service_account_email = 4;</code>
+     * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
      *
      * @param value The bytes for serviceAccountEmail to set.
      * @return This builder for chaining.
@@ -1449,6 +1499,7 @@ public Builder setServiceAccountEmailBytes(com.google.protobuf.ByteString value)
      *
      * <pre>
      * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+     * Writable, can be updated by UpdateHmacKey operation.
      * </pre>
      *
      * <code>string state = 5;</code>
@@ -1471,6 +1522,7 @@ public java.lang.String getState() {
      *
      * <pre>
      * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+     * Writable, can be updated by UpdateHmacKey operation.
      * </pre>
      *
      * <code>string state = 5;</code>
@@ -1493,6 +1545,7 @@ public com.google.protobuf.ByteString getStateBytes() {
      *
      * <pre>
      * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+     * Writable, can be updated by UpdateHmacKey operation.
      * </pre>
      *
      * <code>string state = 5;</code>
@@ -1514,6 +1567,7 @@ public Builder setState(java.lang.String value) {
      *
      * <pre>
      * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+     * Writable, can be updated by UpdateHmacKey operation.
      * </pre>
      *
      * <code>string state = 5;</code>
@@ -1531,6 +1585,7 @@ public Builder clearState() {
      *
      * <pre>
      * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+     * Writable, can be updated by UpdateHmacKey operation.
      * </pre>
      *
      * <code>string state = 5;</code>
@@ -1559,10 +1614,12 @@ public Builder setStateBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      *
      * @return Whether the createTime field is set.
      */
@@ -1573,10 +1630,12 @@ public boolean hasCreateTime() {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      *
      * @return The createTime.
      */
@@ -1593,10 +1652,12 @@ public com.google.protobuf.Timestamp getCreateTime() {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder setCreateTime(com.google.protobuf.Timestamp value) {
       if (createTimeBuilder_ == null) {
@@ -1615,10 +1676,12 @@ public Builder setCreateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder setCreateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
       if (createTimeBuilder_ == null) {
@@ -1634,10 +1697,12 @@ public Builder setCreateTime(com.google.protobuf.Timestamp.Builder builderForVal
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder mergeCreateTime(com.google.protobuf.Timestamp value) {
       if (createTimeBuilder_ == null) {
@@ -1658,10 +1723,12 @@ public Builder mergeCreateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder clearCreateTime() {
       if (createTimeBuilder_ == null) {
@@ -1678,10 +1745,12 @@ public Builder clearCreateTime() {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public com.google.protobuf.Timestamp.Builder getCreateTimeBuilder() {
 
@@ -1692,10 +1761,12 @@ public com.google.protobuf.Timestamp.Builder getCreateTimeBuilder() {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
       if (createTimeBuilder_ != null) {
@@ -1710,10 +1781,12 @@ public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
      *
      *
      * <pre>
-     * The creation time of the HMAC key.
+     * Output only. The creation time of the HMAC key.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp create_time = 6;</code>
+     * <code>
+     * .google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.protobuf.Timestamp,
@@ -1742,10 +1815,12 @@ public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      *
      * @return Whether the updateTime field is set.
      */
@@ -1756,10 +1831,12 @@ public boolean hasUpdateTime() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      *
      * @return The updateTime.
      */
@@ -1776,10 +1853,12 @@ public com.google.protobuf.Timestamp getUpdateTime() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder setUpdateTime(com.google.protobuf.Timestamp value) {
       if (updateTimeBuilder_ == null) {
@@ -1798,10 +1877,12 @@ public Builder setUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder setUpdateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
       if (updateTimeBuilder_ == null) {
@@ -1817,10 +1898,12 @@ public Builder setUpdateTime(com.google.protobuf.Timestamp.Builder builderForVal
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder mergeUpdateTime(com.google.protobuf.Timestamp value) {
       if (updateTimeBuilder_ == null) {
@@ -1841,10 +1924,12 @@ public Builder mergeUpdateTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public Builder clearUpdateTime() {
       if (updateTimeBuilder_ == null) {
@@ -1861,10 +1946,12 @@ public Builder clearUpdateTime() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public com.google.protobuf.Timestamp.Builder getUpdateTimeBuilder() {
 
@@ -1875,10 +1962,12 @@ public com.google.protobuf.Timestamp.Builder getUpdateTimeBuilder() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     public com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder() {
       if (updateTimeBuilder_ != null) {
@@ -1893,10 +1982,12 @@ public com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder() {
      *
      *
      * <pre>
-     * The last modification time of the HMAC key metadata.
+     * Output only. The last modification time of the HMAC key metadata.
      * </pre>
      *
-     * <code>.google.protobuf.Timestamp update_time = 7;</code>
+     * <code>
+     * .google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.protobuf.Timestamp,
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadataOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadataOrBuilder.java
index 3e7bc4e83..a3ab3e0e7 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadataOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/HmacKeyMetadataOrBuilder.java
@@ -27,10 +27,12 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+   * Immutable. Resource name ID of the key in the format
+   * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
-   * <code>string id = 1;</code>
+   * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The id.
    */
@@ -39,10 +41,12 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Resource name ID of the key in the format &lt;projectId&gt;/&lt;accessId&gt;.
+   * Immutable. Resource name ID of the key in the format
+   * &lt;projectIdentifier&gt;/&lt;accessId&gt;.
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
-   * <code>string id = 1;</code>
+   * <code>string id = 1 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The bytes for id.
    */
@@ -52,10 +56,10 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Globally unique id for keys.
+   * Immutable. Globally unique id for keys.
    * </pre>
    *
-   * <code>string access_id = 2;</code>
+   * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The accessId.
    */
@@ -64,10 +68,10 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Globally unique id for keys.
+   * Immutable. Globally unique id for keys.
    * </pre>
    *
-   * <code>string access_id = 2;</code>
+   * <code>string access_id = 2 [(.google.api.field_behavior) = IMMUTABLE];</code>
    *
    * @return The bytes for accessId.
    */
@@ -77,10 +81,14 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The project ID that the hmac key is contained in.
+   * Immutable. Identifies the project that owns the service account of the specified HMAC
+   * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+   * be the project ID or project number.
    * </pre>
    *
-   * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+   * <code>
+   * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+   * </code>
    *
    * @return The project.
    */
@@ -89,10 +97,14 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The project ID that the hmac key is contained in.
+   * Immutable. Identifies the project that owns the service account of the specified HMAC
+   * key, in the format "projects/&lt;projectIdentifier&gt;". &lt;projectIdentifier&gt; can
+   * be the project ID or project number.
    * </pre>
    *
-   * <code>string project = 3 [(.google.api.resource_reference) = { ... }</code>
+   * <code>
+   * string project = 3 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
+   * </code>
    *
    * @return The bytes for project.
    */
@@ -102,10 +114,10 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Email of the service account the key authenticates as.
+   * Output only. Email of the service account the key authenticates as.
    * </pre>
    *
-   * <code>string service_account_email = 4;</code>
+   * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
    *
    * @return The serviceAccountEmail.
    */
@@ -114,10 +126,10 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * Email of the service account the key authenticates as.
+   * Output only. Email of the service account the key authenticates as.
    * </pre>
    *
-   * <code>string service_account_email = 4;</code>
+   * <code>string service_account_email = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
    *
    * @return The bytes for serviceAccountEmail.
    */
@@ -128,6 +140,7 @@ public interface HmacKeyMetadataOrBuilder
    *
    * <pre>
    * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+   * Writable, can be updated by UpdateHmacKey operation.
    * </pre>
    *
    * <code>string state = 5;</code>
@@ -140,6 +153,7 @@ public interface HmacKeyMetadataOrBuilder
    *
    * <pre>
    * State of the key. One of ACTIVE, INACTIVE, or DELETED.
+   * Writable, can be updated by UpdateHmacKey operation.
    * </pre>
    *
    * <code>string state = 5;</code>
@@ -152,10 +166,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return Whether the createTime field is set.
    */
@@ -164,10 +179,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return The createTime.
    */
@@ -176,10 +192,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The creation time of the HMAC key.
+   * Output only. The creation time of the HMAC key.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp create_time = 6;</code>
+   * <code>.google.protobuf.Timestamp create_time = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    */
   com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder();
 
@@ -187,10 +204,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return Whether the updateTime field is set.
    */
@@ -199,10 +217,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    *
    * @return The updateTime.
    */
@@ -211,10 +230,11 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * The last modification time of the HMAC key metadata.
+   * Output only. The last modification time of the HMAC key metadata.
    * </pre>
    *
-   * <code>.google.protobuf.Timestamp update_time = 7;</code>
+   * <code>.google.protobuf.Timestamp update_time = 7 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
    */
   com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder();
 
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequest.java
index f230cdbdb..a812b6e9e 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequest.java
@@ -145,7 +145,9 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The project id to list HMAC keys for.
+   * Required. The project to list HMAC keys for, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -170,7 +172,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * Required. The project id to list HMAC keys for.
+   * Required. The project to list HMAC keys for, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -709,7 +713,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The project id to list HMAC keys for.
+     * Required. The project to list HMAC keys for, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -733,7 +739,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * Required. The project id to list HMAC keys for.
+     * Required. The project to list HMAC keys for, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -757,7 +765,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * Required. The project id to list HMAC keys for.
+     * Required. The project to list HMAC keys for, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -780,7 +790,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The project id to list HMAC keys for.
+     * Required. The project to list HMAC keys for, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
@@ -799,7 +811,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * Required. The project id to list HMAC keys for.
+     * Required. The project to list HMAC keys for, in the format of
+     * "projects/&lt;projectIdentifier&gt;".
+     * &lt;projectIdentifier&gt; can be the project ID or project number.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequestOrBuilder.java
index 23895d5c4..0f4bdd317 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListHmacKeysRequestOrBuilder.java
@@ -27,7 +27,9 @@ public interface ListHmacKeysRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id to list HMAC keys for.
+   * Required. The project to list HMAC keys for, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
@@ -41,7 +43,9 @@ public interface ListHmacKeysRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The project id to list HMAC keys for.
+   * Required. The project to list HMAC keys for, in the format of
+   * "projects/&lt;projectIdentifier&gt;".
+   * &lt;projectIdentifier&gt; can be the project ID or project number.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Object.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Object.java
index 6b4d9c5ba..b1cc47ce9 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Object.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Object.java
@@ -1212,6 +1212,11 @@ public com.google.storage.v2.ObjectChecksumsOrBuilder getChecksumsOrBuilder() {
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -1230,6 +1235,11 @@ public boolean hasUpdateTime() {
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -1248,6 +1258,11 @@ public com.google.protobuf.Timestamp getUpdateTime() {
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -5014,6 +5029,11 @@ public com.google.storage.v2.ObjectChecksumsOrBuilder getChecksumsOrBuilder() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5032,6 +5052,11 @@ public boolean hasUpdateTime() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5056,6 +5081,11 @@ public com.google.protobuf.Timestamp getUpdateTime() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5082,6 +5112,11 @@ public Builder setUpdateTime(com.google.protobuf.Timestamp value) {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5105,6 +5140,11 @@ public Builder setUpdateTime(com.google.protobuf.Timestamp.Builder builderForVal
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5133,6 +5173,11 @@ public Builder mergeUpdateTime(com.google.protobuf.Timestamp value) {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5157,6 +5202,11 @@ public Builder clearUpdateTime() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5175,6 +5225,11 @@ public com.google.protobuf.Timestamp.Builder getUpdateTimeBuilder() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5197,6 +5252,11 @@ public com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder() {
      *
      * <pre>
      * Output only. The modification time of the object metadata.
+     * Set initially to object creation time and then updated whenever any
+     * metadata of the object changes. This includes changes made by a requester,
+     * such as modifying custom metadata, as well as changes made by Cloud Storage
+     * on behalf of a requester, such as changing the storage class based on an
+     * Object Lifecycle Configuration.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectOrBuilder.java
index bd6aa32c6..4546815fe 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectOrBuilder.java
@@ -552,6 +552,11 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -567,6 +572,11 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -582,6 +592,11 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Output only. The modification time of the object metadata.
+   * Set initially to object creation time and then updated whenever any
+   * metadata of the object changes. This includes changes made by a requester,
+   * such as modifying custom metadata, as well as changes made by Cloud Storage
+   * on behalf of a requester, such as changing the storage class based on an
+   * Object Lifecycle Configuration.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequest.java
index 3bf7f794d..507dc4d72 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequest.java
@@ -285,9 +285,9 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Immutable. The name of the destination object. Nearly any sequence of unicode
-   * characters is valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of the destination object.
+   * See the
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
    * Example: `test.txt`
    * The `name` field by itself does not uniquely identify a Cloud Storage
    * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -314,9 +314,9 @@ public java.lang.String getDestinationName() {
    *
    *
    * <pre>
-   * Immutable. The name of the destination object. Nearly any sequence of unicode
-   * characters is valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of the destination object.
+   * See the
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
    * Example: `test.txt`
    * The `name` field by itself does not uniquely identify a Cloud Storage
    * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -346,7 +346,7 @@ public com.google.protobuf.ByteString getDestinationNameBytes() {
    *
    *
    * <pre>
-   * Immutable. The name of the bucket containing The name of the destination object.
+   * Immutable. The name of the bucket containing the destination object.
    * </pre>
    *
    * <code>
@@ -371,7 +371,7 @@ public java.lang.String getDestinationBucket() {
    *
    *
    * <pre>
-   * Immutable. The name of the bucket containing The name of the destination object.
+   * Immutable. The name of the bucket containing the destination object.
    * </pre>
    *
    * <code>
@@ -1957,9 +1957,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Immutable. The name of the destination object. Nearly any sequence of unicode
-     * characters is valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of the destination object.
+     * See the
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
      * Example: `test.txt`
      * The `name` field by itself does not uniquely identify a Cloud Storage
      * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -1985,9 +1985,9 @@ public java.lang.String getDestinationName() {
      *
      *
      * <pre>
-     * Immutable. The name of the destination object. Nearly any sequence of unicode
-     * characters is valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of the destination object.
+     * See the
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
      * Example: `test.txt`
      * The `name` field by itself does not uniquely identify a Cloud Storage
      * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -2013,9 +2013,9 @@ public com.google.protobuf.ByteString getDestinationNameBytes() {
      *
      *
      * <pre>
-     * Immutable. The name of the destination object. Nearly any sequence of unicode
-     * characters is valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of the destination object.
+     * See the
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
      * Example: `test.txt`
      * The `name` field by itself does not uniquely identify a Cloud Storage
      * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -2040,9 +2040,9 @@ public Builder setDestinationName(java.lang.String value) {
      *
      *
      * <pre>
-     * Immutable. The name of the destination object. Nearly any sequence of unicode
-     * characters is valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of the destination object.
+     * See the
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
      * Example: `test.txt`
      * The `name` field by itself does not uniquely identify a Cloud Storage
      * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -2063,9 +2063,9 @@ public Builder clearDestinationName() {
      *
      *
      * <pre>
-     * Immutable. The name of the destination object. Nearly any sequence of unicode
-     * characters is valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of the destination object.
+     * See the
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
      * Example: `test.txt`
      * The `name` field by itself does not uniquely identify a Cloud Storage
      * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -2093,7 +2093,7 @@ public Builder setDestinationNameBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Immutable. The name of the bucket containing The name of the destination object.
+     * Immutable. The name of the bucket containing the destination object.
      * </pre>
      *
      * <code>
@@ -2117,7 +2117,7 @@ public java.lang.String getDestinationBucket() {
      *
      *
      * <pre>
-     * Immutable. The name of the bucket containing The name of the destination object.
+     * Immutable. The name of the bucket containing the destination object.
      * </pre>
      *
      * <code>
@@ -2141,7 +2141,7 @@ public com.google.protobuf.ByteString getDestinationBucketBytes() {
      *
      *
      * <pre>
-     * Immutable. The name of the bucket containing The name of the destination object.
+     * Immutable. The name of the bucket containing the destination object.
      * </pre>
      *
      * <code>
@@ -2164,7 +2164,7 @@ public Builder setDestinationBucket(java.lang.String value) {
      *
      *
      * <pre>
-     * Immutable. The name of the bucket containing The name of the destination object.
+     * Immutable. The name of the bucket containing the destination object.
      * </pre>
      *
      * <code>
@@ -2183,7 +2183,7 @@ public Builder clearDestinationBucket() {
      *
      *
      * <pre>
-     * Immutable. The name of the bucket containing The name of the destination object.
+     * Immutable. The name of the bucket containing the destination object.
      * </pre>
      *
      * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequestOrBuilder.java
index 41ffda22f..cd22bb5a1 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequestOrBuilder.java
@@ -27,9 +27,9 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of the destination object. Nearly any sequence of unicode
-   * characters is valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of the destination object.
+   * See the
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
    * Example: `test.txt`
    * The `name` field by itself does not uniquely identify a Cloud Storage
    * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -45,9 +45,9 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of the destination object. Nearly any sequence of unicode
-   * characters is valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of the destination object.
+   * See the
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
    * Example: `test.txt`
    * The `name` field by itself does not uniquely identify a Cloud Storage
    * object. A Cloud Storage object is uniquely identified by the tuple of
@@ -64,7 +64,7 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of the bucket containing The name of the destination object.
+   * Immutable. The name of the bucket containing the destination object.
    * </pre>
    *
    * <code>
@@ -78,7 +78,7 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of the bucket containing The name of the destination object.
+   * Immutable. The name of the bucket containing the destination object.
    * </pre>
    *
    * <code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageProto.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageProto.java
index 5c95c7fc2..109ea1da5 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageProto.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageProto.java
@@ -91,6 +91,14 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_storage_v2_DeleteObjectRequest_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_storage_v2_DeleteObjectRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_storage_v2_CancelResumableWriteRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_storage_v2_CancelResumableWriteResponse_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_storage_v2_ReadObjectRequest_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
@@ -327,494 +335,528 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
       "\n\037google/storage/v2/storage.proto\022\021googl"
           + "e.storage.v2\032\027google/api/client.proto\032\037g"
           + "oogle/api/field_behavior.proto\032\031google/a"
-          + "pi/resource.proto\032\036google/iam/v1/iam_pol"
-          + "icy.proto\032\032google/iam/v1/policy.proto\032\033g"
-          + "oogle/protobuf/empty.proto\032 google/proto"
-          + "buf/field_mask.proto\032\037google/protobuf/ti"
-          + "mestamp.proto\032\026google/type/date.proto\"\326\001"
-          + "\n\023DeleteBucketRequest\0223\n\004name\030\001 \001(\tB%\340A\002"
+          + "pi/resource.proto\032\030google/api/routing.pr"
+          + "oto\032\036google/iam/v1/iam_policy.proto\032\032goo"
+          + "gle/iam/v1/policy.proto\032\033google/protobuf"
+          + "/empty.proto\032 google/protobuf/field_mask"
+          + ".proto\032\037google/protobuf/timestamp.proto\032"
+          + "\026google/type/date.proto\"\326\001\n\023DeleteBucket"
+          + "Request\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035storage.g"
+          + "oogleapis.com/Bucket\022$\n\027if_metageneratio"
+          + "n_match\030\002 \001(\003H\000\210\001\001\022(\n\033if_metageneration_"
+          + "not_match\030\003 \001(\003H\001\210\001\001B\032\n\030_if_metagenerati"
+          + "on_matchB\036\n\034_if_metageneration_not_match"
+          + "\"\225\002\n\020GetBucketRequest\0223\n\004name\030\001 \001(\tB%\340A\002"
           + "\372A\037\n\035storage.googleapis.com/Bucket\022$\n\027if"
           + "_metageneration_match\030\002 \001(\003H\000\210\001\001\022(\n\033if_m"
-          + "etageneration_not_match\030\003 \001(\003H\001\210\001\001B\032\n\030_i"
+          + "etageneration_not_match\030\003 \001(\003H\001\210\001\001\0222\n\tre"
+          + "ad_mask\030\005 \001(\0132\032.google.protobuf.FieldMas"
+          + "kH\002\210\001\001B\032\n\030_if_metageneration_matchB\036\n\034_i"
+          + "f_metageneration_not_matchB\014\n\n_read_mask"
+          + "\"\341\001\n\023CreateBucketRequest\022C\n\006parent\030\001 \001(\t"
+          + "B3\340A\002\372A-\n+cloudresourcemanager.googleapi"
+          + "s.com/Project\022.\n\006bucket\030\002 \001(\0132\031.google.s"
+          + "torage.v2.BucketB\003\340A\002\022\026\n\tbucket_id\030\003 \001(\t"
+          + "B\003\340A\002\022\026\n\016predefined_acl\030\006 \001(\t\022%\n\035predefi"
+          + "ned_default_object_acl\030\007 \001(\t\"\322\001\n\022ListBuc"
+          + "ketsRequest\022C\n\006parent\030\001 \001(\tB3\340A\002\372A-\n+clo"
+          + "udresourcemanager.googleapis.com/Project"
+          + "\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022"
+          + "\016\n\006prefix\030\004 \001(\t\0222\n\tread_mask\030\005 \001(\0132\032.goo"
+          + "gle.protobuf.FieldMaskH\000\210\001\001B\014\n\n_read_mas"
+          + "k\"Z\n\023ListBucketsResponse\022*\n\007buckets\030\001 \003("
+          + "\0132\031.google.storage.v2.Bucket\022\027\n\017next_pag"
+          + "e_token\030\002 \001(\t\"z\n LockBucketRetentionPoli"
+          + "cyRequest\0225\n\006bucket\030\001 \001(\tB%\340A\002\372A\037\n\035stora"
+          + "ge.googleapis.com/Bucket\022\037\n\027if_metagener"
+          + "ation_match\030\002 \001(\003\"\274\002\n\023UpdateBucketReques"
+          + "t\022)\n\006bucket\030\001 \001(\0132\031.google.storage.v2.Bu"
+          + "cket\022$\n\027if_metageneration_match\030\002 \001(\003H\000\210"
+          + "\001\001\022(\n\033if_metageneration_not_match\030\003 \001(\003H"
+          + "\001\210\001\001\022\026\n\016predefined_acl\030\010 \001(\t\022%\n\035predefin"
+          + "ed_default_object_acl\030\t \001(\t\022/\n\013update_ma"
+          + "sk\030\006 \001(\0132\032.google.protobuf.FieldMaskB\032\n\030"
+          + "_if_metageneration_matchB\036\n\034_if_metagene"
+          + "ration_not_match\"V\n\031DeleteNotificationRe"
+          + "quest\0229\n\004name\030\001 \001(\tB+\340A\002\372A%\n#storage.goo"
+          + "gleapis.com/Notification\"M\n\026GetNotificat"
+          + "ionRequest\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035storag"
+          + "e.googleapis.com/Bucket\"\216\001\n\031CreateNotifi"
+          + "cationRequest\0225\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022\035s"
+          + "torage.googleapis.com/Bucket\022:\n\014notifica"
+          + "tion\030\002 \001(\0132\037.google.storage.v2.Notificat"
+          + "ionB\003\340A\002\"x\n\030ListNotificationsRequest\0225\n\006"
+          + "parent\030\001 \001(\tB%\340A\002\372A\037\022\035storage.googleapis"
+          + ".com/Bucket\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_t"
+          + "oken\030\003 \001(\t\"l\n\031ListNotificationsResponse\022"
+          + "6\n\rnotifications\030\001 \003(\0132\037.google.storage."
+          + "v2.Notification\022\027\n\017next_page_token\030\002 \001(\t"
+          + "\"\267\005\n\024ComposeObjectRequest\0223\n\013destination"
+          + "\030\001 \001(\0132\031.google.storage.v2.ObjectB\003\340A\002\022L"
+          + "\n\016source_objects\030\002 \003(\01324.google.storage."
+          + "v2.ComposeObjectRequest.SourceObject\022\"\n\032"
+          + "destination_predefined_acl\030\t \001(\t\022 \n\023if_g"
+          + "eneration_match\030\004 \001(\003H\000\210\001\001\022$\n\027if_metagen"
+          + "eration_match\030\005 \001(\003H\001\210\001\001\0227\n\007kms_key\030\006 \001("
+          + "\tB&\372A#\n!cloudkms.googleapis.com/CryptoKe"
+          + "y\022R\n\034common_object_request_params\030\007 \001(\0132"
+          + ",.google.storage.v2.CommonObjectRequestP"
+          + "arams\032\356\001\n\014SourceObject\022\021\n\004name\030\001 \001(\tB\003\340A"
+          + "\002\022\022\n\ngeneration\030\002 \001(\003\022f\n\024object_precondi"
+          + "tions\030\003 \001(\0132H.google.storage.v2.ComposeO"
+          + "bjectRequest.SourceObject.ObjectPrecondi"
+          + "tions\032O\n\023ObjectPreconditions\022 \n\023if_gener"
+          + "ation_match\030\001 \001(\003H\000\210\001\001B\026\n\024_if_generation"
+          + "_matchB\026\n\024_if_generation_matchB\032\n\030_if_me"
+          + "tageneration_match\"\257\003\n\023DeleteObjectReque"
+          + "st\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n\006object\030\002 \001(\tB"
+          + "\003\340A\002\022\022\n\ngeneration\030\004 \001(\003\022 \n\023if_generatio"
+          + "n_match\030\005 \001(\003H\000\210\001\001\022$\n\027if_generation_not_"
+          + "match\030\006 \001(\003H\001\210\001\001\022$\n\027if_metageneration_ma"
+          + "tch\030\007 \001(\003H\002\210\001\001\022(\n\033if_metageneration_not_"
+          + "match\030\010 \001(\003H\003\210\001\001\022R\n\034common_object_reques"
+          + "t_params\030\n \001(\0132,.google.storage.v2.Commo"
+          + "nObjectRequestParamsB\026\n\024_if_generation_m"
+          + "atchB\032\n\030_if_generation_not_matchB\032\n\030_if_"
+          + "metageneration_matchB\036\n\034_if_metagenerati"
+          + "on_not_match\"5\n\033CancelResumableWriteRequ"
+          + "est\022\026\n\tupload_id\030\001 \001(\tB\003\340A\002\"\036\n\034CancelRes"
+          + "umableWriteResponse\"\216\004\n\021ReadObjectReques"
+          + "t\022\016\n\006bucket\030\001 \001(\t\022\016\n\006object\030\002 \001(\t\022\022\n\ngen"
+          + "eration\030\003 \001(\003\022\023\n\013read_offset\030\004 \001(\003\022\022\n\nre"
+          + "ad_limit\030\005 \001(\003\022 \n\023if_generation_match\030\006 "
+          + "\001(\003H\000\210\001\001\022$\n\027if_generation_not_match\030\007 \001("
+          + "\003H\001\210\001\001\022$\n\027if_metageneration_match\030\010 \001(\003H"
+          + "\002\210\001\001\022(\n\033if_metageneration_not_match\030\t \001("
+          + "\003H\003\210\001\001\022R\n\034common_object_request_params\030\n"
+          + " \001(\0132,.google.storage.v2.CommonObjectReq"
+          + "uestParams\0222\n\tread_mask\030\014 \001(\0132\032.google.p"
+          + "rotobuf.FieldMaskH\004\210\001\001B\026\n\024_if_generation"
+          + "_matchB\032\n\030_if_generation_not_matchB\032\n\030_i"
           + "f_metageneration_matchB\036\n\034_if_metagenera"
-          + "tion_not_match\"\225\002\n\020GetBucketRequest\0223\n\004n"
-          + "ame\030\001 \001(\tB%\340A\002\372A\037\n\035storage.googleapis.co"
-          + "m/Bucket\022$\n\027if_metageneration_match\030\002 \001("
-          + "\003H\000\210\001\001\022(\n\033if_metageneration_not_match\030\003 "
-          + "\001(\003H\001\210\001\001\0222\n\tread_mask\030\005 \001(\0132\032.google.pro"
-          + "tobuf.FieldMaskH\002\210\001\001B\032\n\030_if_metagenerati"
-          + "on_matchB\036\n\034_if_metageneration_not_match"
-          + "B\014\n\n_read_mask\"\341\001\n\023CreateBucketRequest\022C"
-          + "\n\006parent\030\001 \001(\tB3\340A\002\372A-\n+cloudresourceman"
-          + "ager.googleapis.com/Project\022.\n\006bucket\030\002 "
-          + "\001(\0132\031.google.storage.v2.BucketB\003\340A\002\022\026\n\tb"
-          + "ucket_id\030\003 \001(\tB\003\340A\002\022\026\n\016predefined_acl\030\006 "
-          + "\001(\t\022%\n\035predefined_default_object_acl\030\007 \001"
-          + "(\t\"\322\001\n\022ListBucketsRequest\022C\n\006parent\030\001 \001("
-          + "\tB3\340A\002\372A-\n+cloudresourcemanager.googleap"
-          + "is.com/Project\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npag"
-          + "e_token\030\003 \001(\t\022\016\n\006prefix\030\004 \001(\t\0222\n\tread_ma"
-          + "sk\030\005 \001(\0132\032.google.protobuf.FieldMaskH\000\210\001"
-          + "\001B\014\n\n_read_mask\"Z\n\023ListBucketsResponse\022*"
-          + "\n\007buckets\030\001 \003(\0132\031.google.storage.v2.Buck"
-          + "et\022\027\n\017next_page_token\030\002 \001(\t\"z\n LockBucke"
-          + "tRetentionPolicyRequest\0225\n\006bucket\030\001 \001(\tB"
-          + "%\340A\002\372A\037\n\035storage.googleapis.com/Bucket\022\037"
-          + "\n\027if_metageneration_match\030\002 \001(\003\"\274\002\n\023Upda"
-          + "teBucketRequest\022)\n\006bucket\030\001 \001(\0132\031.google"
-          + ".storage.v2.Bucket\022$\n\027if_metageneration_"
-          + "match\030\002 \001(\003H\000\210\001\001\022(\n\033if_metageneration_no"
-          + "t_match\030\003 \001(\003H\001\210\001\001\022\026\n\016predefined_acl\030\010 \001"
-          + "(\t\022%\n\035predefined_default_object_acl\030\t \001("
-          + "\t\022/\n\013update_mask\030\006 \001(\0132\032.google.protobuf"
-          + ".FieldMaskB\032\n\030_if_metageneration_matchB\036"
-          + "\n\034_if_metageneration_not_match\"V\n\031Delete"
-          + "NotificationRequest\0229\n\004name\030\001 \001(\tB+\340A\002\372A"
-          + "%\n#storage.googleapis.com/Notification\"M"
-          + "\n\026GetNotificationRequest\0223\n\004name\030\001 \001(\tB%"
-          + "\340A\002\372A\037\n\035storage.googleapis.com/Bucket\"\216\001"
-          + "\n\031CreateNotificationRequest\0225\n\006parent\030\001 "
-          + "\001(\tB%\340A\002\372A\037\022\035storage.googleapis.com/Buck"
-          + "et\022:\n\014notification\030\002 \001(\0132\037.google.storag"
-          + "e.v2.NotificationB\003\340A\002\"x\n\030ListNotificati"
-          + "onsRequest\0225\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022\035stor"
-          + "age.googleapis.com/Bucket\022\021\n\tpage_size\030\002"
-          + " \001(\005\022\022\n\npage_token\030\003 \001(\t\"l\n\031ListNotifica"
-          + "tionsResponse\0226\n\rnotifications\030\001 \003(\0132\037.g"
-          + "oogle.storage.v2.Notification\022\027\n\017next_pa"
-          + "ge_token\030\002 \001(\t\"\267\005\n\024ComposeObjectRequest\022"
-          + "3\n\013destination\030\001 \001(\0132\031.google.storage.v2"
-          + ".ObjectB\003\340A\002\022L\n\016source_objects\030\002 \003(\01324.g"
-          + "oogle.storage.v2.ComposeObjectRequest.So"
-          + "urceObject\022\"\n\032destination_predefined_acl"
-          + "\030\t \001(\t\022 \n\023if_generation_match\030\004 \001(\003H\000\210\001\001"
-          + "\022$\n\027if_metageneration_match\030\005 \001(\003H\001\210\001\001\0227"
-          + "\n\007kms_key\030\006 \001(\tB&\372A#\n!cloudkms.googleapi"
-          + "s.com/CryptoKey\022R\n\034common_object_request"
-          + "_params\030\007 \001(\0132,.google.storage.v2.Common"
-          + "ObjectRequestParams\032\356\001\n\014SourceObject\022\021\n\004"
-          + "name\030\001 \001(\tB\003\340A\002\022\022\n\ngeneration\030\002 \001(\003\022f\n\024o"
-          + "bject_preconditions\030\003 \001(\0132H.google.stora"
-          + "ge.v2.ComposeObjectRequest.SourceObject."
-          + "ObjectPreconditions\032O\n\023ObjectPreconditio"
-          + "ns\022 \n\023if_generation_match\030\001 \001(\003H\000\210\001\001B\026\n\024"
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-          + "atchB\032\n\030_if_metageneration_match\"\302\003\n\023Del"
-          + "eteObjectRequest\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n"
-          + "\006object\030\002 \001(\tB\003\340A\002\022\021\n\tupload_id\030\003 \001(\t\022\022\n"
-          + "\ngeneration\030\004 \001(\003\022 \n\023if_generation_match"
-          + "\030\005 \001(\003H\000\210\001\001\022$\n\027if_generation_not_match\030\006"
-          + " \001(\003H\001\210\001\001\022$\n\027if_metageneration_match\030\007 \001"
-          + "(\003H\002\210\001\001\022(\n\033if_metageneration_not_match\030\010"
-          + " \001(\003H\003\210\001\001\022R\n\034common_object_request_param"
-          + "s\030\n \001(\0132,.google.storage.v2.CommonObject"
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-          + "\001(\t\022\016\n\006object\030\002 \001(\t\022\022\n\ngeneration\030\003 \001(\003\022"
-          + "\023\n\013read_offset\030\004 \001(\003\022\022\n\nread_limit\030\005 \001(\003"
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-          + "_generation_not_match\030\007 \001(\003H\001\210\001\001\022$\n\027if_m"
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-          + "storage.v2.CommonObjectRequestParams\0222\n\t"
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-          + "askH\004\210\001\001B\026\n\024_if_generation_matchB\032\n\030_if_"
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-          + "B\014\n\n_read_mask\"\356\003\n\020GetObjectRequest\022\023\n\006b"
-          + "ucket\030\001 \001(\tB\003\340A\002\022\023\n\006object\030\002 \001(\tB\003\340A\002\022\022\n"
-          + "\ngeneration\030\003 \001(\003\022 \n\023if_generation_match"
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-          + " \001(\003H\001\210\001\001\022$\n\027if_metageneration_match\030\006 \001"
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-          + "RequestParams\0222\n\tread_mask\030\n \001(\0132\032.googl"
-          + "e.protobuf.FieldMaskH\004\210\001\001B\026\n\024_if_generat"
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-          + "ObjectResponse\022<\n\020checksummed_data\030\001 \001(\013"
-          + "2\".google.storage.v2.ChecksummedData\022<\n\020"
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-          + "v2.ObjectChecksums\0226\n\rcontent_range\030\003 \001("
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+          + "tion_not_matchB\014\n\n_read_mask\"\356\003\n\020GetObje"
+          + "ctRequest\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n\006object"
+          + "\030\002 \001(\tB\003\340A\002\022\022\n\ngeneration\030\003 \001(\003\022 \n\023if_ge"
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+          + "\030\n \001(\0132\032.google.protobuf.FieldMaskH\004\210\001\001B"
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+          + "\036\n\034_if_metageneration_not_matchB\014\n\n_read"
+          + "_mask\"\365\001\n\022ReadObjectResponse\022<\n\020checksum"
+          + "med_data\030\001 \001(\0132\".google.storage.v2.Check"
+          + "summedData\022<\n\020object_checksums\030\002 \001(\0132\".g"
+          + "oogle.storage.v2.ObjectChecksums\0226\n\rcont"
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+          + "tch\030\006 \001(\003H\003\210\001\001\022\030\n\013object_size\030\010 \001(\003H\004\210\001\001"
           + "B\026\n\024_if_generation_matchB\032\n\030_if_generati"
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-          + "B\036\n\034_if_metageneration_not_match\"\206\003\n\022Wri"
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-          + "gle.storage.v2.ChecksummedDataH\001\022<\n\020obje"
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-          + "B\017\n\rfirst_messageB\006\n\004data\"n\n\023WriteObject"
-          + "Response\022\030\n\016persisted_size\030\001 \001(\003H\000\022-\n\010re"
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-          + "apis.com/Bucket\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npa"
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-          + "ogle.storage.v2.CommonObjectRequestParam"
-          + "s\"s\n\030QueryWriteStatusResponse\022\030\n\016persist"
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-          + "le.storage.v2.ObjectH\000B\016\n\014write_status\"\302"
-          + "\t\n\024RewriteObjectRequest\022\035\n\020destination_n"
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-          + "t\022C\n\023destination_kms_key\030\033 \001(\tB&\372A#\n!clo"
-          + "udkms.googleapis.com/CryptoKey\022.\n\013destin"
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+          + "B\036\n\034_if_metageneration_not_matchB\016\n\014_obj"
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+          + "gle.storage.v2.ObjectChecksums\022\024\n\014finish"
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+          + "\n\014write_status\"\302\t\n\024RewriteObjectRequest\022"
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+          + "e_generation_match\030\013 \001(\003H\004\210\001\001\022+\n\036if_sour"
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+          + "\030\017 \001(\003\022(\n copy_source_encryption_algorit"
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+          + "_sha256_bytes\030\026 \001(\014\022R\n\034common_object_req"
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+          + "_matchB!\n\037_if_source_generation_not_matc"
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+          + "RewriteResponse\022\035\n\025total_bytes_rewritten"
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-          + "\035\n\025total_bytes_rewritten\030\001 \001(\003\022\023\n\013object"
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-          + "ge.v2.CommonObjectRequestParams\"0\n\033Start"
-          + "ResumableWriteResponse\022\021\n\tupload_id\030\001 \001("
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-          + "eObject\022%.google.storage.v2.WriteObjectR"
-          + "equest\032&.google.storage.v2.WriteObjectRe"
-          + "sponse\"\000(\001\022g\n\013ListObjects\022%.google.stora"
-          + "ge.v2.ListObjectsRequest\032&.google.storag"
-          + "e.v2.ListObjectsResponse\"\t\332A\006parent\022^\n\rR"
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-          + "eResponse\"\000\022v\n\023StartResumableWrite\022-.goo"
-          + "gle.storage.v2.StartResumableWriteReques"
-          + "t\032..google.storage.v2.StartResumableWrit"
-          + "eResponse\"\000\022y\n\020QueryWriteStatus\022*.google"
-          + ".storage.v2.QueryWriteStatusRequest\032+.go"
-          + "ogle.storage.v2.QueryWriteStatusResponse"
-          + "\"\014\332A\tupload_id\022o\n\021GetServiceAccount\022+.go"
-          + "ogle.storage.v2.GetServiceAccountRequest"
-          + "\032!.google.storage.v2.ServiceAccount\"\n\332A\007"
-          + "project\022\204\001\n\rCreateHmacKey\022\'.google.stora"
-          + "ge.v2.CreateHmacKeyRequest\032(.google.stor"
-          + "age.v2.CreateHmacKeyResponse\" \332A\035project"
-          + ",service_account_email\022f\n\rDeleteHmacKey\022"
-          + "\'.google.storage.v2.DeleteHmacKeyRequest"
-          + "\032\026.google.protobuf.Empty\"\024\332A\021access_id,p"
-          + "roject\022l\n\nGetHmacKey\022$.google.storage.v2"
-          + ".GetHmacKeyRequest\032\".google.storage.v2.H"
-          + "macKeyMetadata\"\024\332A\021access_id,project\022k\n\014"
-          + "ListHmacKeys\022&.google.storage.v2.ListHma"
-          + "cKeysRequest\032\'.google.storage.v2.ListHma"
-          + "cKeysResponse\"\n\332A\007project\022u\n\rUpdateHmacK"
-          + "ey\022\'.google.storage.v2.UpdateHmacKeyRequ"
-          + "est\032\".google.storage.v2.HmacKeyMetadata\""
-          + "\027\332A\024hmac_key,update_mask\032\247\002\312A\026storage.go"
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-          + "toP\001Z8google.golang.org/genproto/googlea"
-          + "pis/storage/v2;storage\352Ax\n!cloudkms.goog"
-          + "leapis.com/CryptoKey\022Sprojects/{project}"
-          + "/locations/{location}/keyRings/{key_ring"
-          + "}/cryptoKeys/{crypto_key}b\006proto3"
+          + "tParams\"0\n\033StartResumableWriteResponse\022\021"
+          + "\n\tupload_id\030\001 \001(\t\"\345\003\n\023UpdateObjectReques"
+          + "t\022)\n\006object\030\001 \001(\0132\031.google.storage.v2.Ob"
+          + "ject\022 \n\023if_generation_match\030\002 \001(\003H\000\210\001\001\022$"
+          + "\n\027if_generation_not_match\030\003 \001(\003H\001\210\001\001\022$\n\027"
+          + "if_metageneration_match\030\004 \001(\003H\002\210\001\001\022(\n\033if"
+          + "_metageneration_not_match\030\005 \001(\003H\003\210\001\001\022\026\n\016"
+          + "predefined_acl\030\n \001(\t\022/\n\013update_mask\030\007 \001("
+          + "\0132\032.google.protobuf.FieldMask\022R\n\034common_"
+          + "object_request_params\030\010 \001(\0132,.google.sto"
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+          + "_generation_matchB\032\n\030_if_generation_not_"
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+          + "ccountRequest\022D\n\007project\030\001 \001(\tB3\340A\002\372A-\n+"
+          + "cloudresourcemanager.googleapis.com/Proj"
+          + "ect\"\200\001\n\024CreateHmacKeyRequest\022D\n\007project\030"
+          + "\001 \001(\tB3\340A\002\372A-\n+cloudresourcemanager.goog"
+          + "leapis.com/Project\022\"\n\025service_account_em"
+          + "ail\030\002 \001(\tB\003\340A\002\"g\n\025CreateHmacKeyResponse\022"
+          + "4\n\010metadata\030\001 \001(\0132\".google.storage.v2.Hm"
+          + "acKeyMetadata\022\030\n\020secret_key_bytes\030\003 \001(\014\""
+          + "t\n\024DeleteHmacKeyRequest\022\026\n\taccess_id\030\001 \001"
+          + "(\tB\003\340A\002\022D\n\007project\030\002 \001(\tB3\340A\002\372A-\n+cloudr"
+          + "esourcemanager.googleapis.com/Project\"q\n"
+          + "\021GetHmacKeyRequest\022\026\n\taccess_id\030\001 \001(\tB\003\340"
+          + "A\002\022D\n\007project\030\002 \001(\tB3\340A\002\372A-\n+cloudresour"
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+          + "\030\001 \003(\0132\".google.storage.v2.HmacKeyMetada"
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+          + "storage.v2.HmacKeyMetadataB\003\340A\002\022/\n\013updat"
+          + "e_mask\030\003 \001(\0132\032.google.protobuf.FieldMask"
+          + "\"|\n\031CommonObjectRequestParams\022\034\n\024encrypt"
+          + "ion_algorithm\030\001 \001(\t\022\034\n\024encryption_key_by"
+          + "tes\030\004 \001(\014\022#\n\033encryption_key_sha256_bytes"
+          + "\030\005 \001(\014\"\312\005\n\020ServiceConstants\"\265\005\n\006Values\022\026"
+          + "\n\022VALUES_UNSPECIFIED\020\000\022\033\n\024MAX_READ_CHUNK"
+          + "_BYTES\020\200\200\200\001\022\034\n\025MAX_WRITE_CHUNK_BYTES\020\200\200\200"
+          + "\001\022\031\n\022MAX_OBJECT_SIZE_MB\020\200\200\300\002\022)\n$MAX_CUST"
+          + "OM_METADATA_FIELD_NAME_BYTES\020\200\010\022*\n%MAX_C"
+          + "USTOM_METADATA_FIELD_VALUE_BYTES\020\200 \022)\n$M"
+          + "AX_CUSTOM_METADATA_TOTAL_SIZE_BYTES\020\200@\022*"
+          + "\n$MAX_BUCKET_METADATA_TOTAL_SIZE_BYTES\020\200"
+          + "\240\001\022\'\n#MAX_NOTIFICATION_CONFIGS_PER_BUCKE"
+          + "T\020d\022\"\n\036MAX_LIFECYCLE_RULES_PER_BUCKET\020d\022"
+          + "&\n\"MAX_NOTIFICATION_CUSTOM_ATTRIBUTES\020\005\022"
+          + "1\n,MAX_NOTIFICATION_CUSTOM_ATTRIBUTE_KEY"
+          + "_LENGTH\020\200\002\0223\n.MAX_NOTIFICATION_CUSTOM_AT"
+          + "TRIBUTE_VALUE_LENGTH\020\200\010\022\034\n\030MAX_LABELS_EN"
+          + "TRIES_COUNT\020@\022\037\n\033MAX_LABELS_KEY_VALUE_LE"
+          + "NGTH\020?\022\037\n\032MAX_LABELS_KEY_VALUE_BYTES\020\200\001\022"
+          + ".\n)MAX_OBJECT_IDS_PER_DELETE_OBJECTS_REQ"
+          + "UEST\020\350\007\022\036\n\032SPLIT_TOKEN_MAX_VALID_DAYS\020\016\032"
+          + "\002\020\001\"\264\027\n\006Bucket\022\021\n\004name\030\001 \001(\tB\003\340A\005\022\026\n\tbuc"
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+          + "t_object_acl\030\t \003(\0132&.google.storage.v2.O"
+          + "bjectAccessControl\0226\n\tlifecycle\030\n \001(\0132#."
+          + "google.storage.v2.Bucket.Lifecycle\0224\n\013cr"
+          + "eate_time\030\013 \001(\0132\032.google.protobuf.Timest"
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+          + "t.Website\0228\n\nversioning\030\021 \001(\0132$.google.s"
+          + "torage.v2.Bucket.Versioning\0222\n\007logging\030\022"
+          + " \001(\0132!.google.storage.v2.Bucket.Logging\022"
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+          + "B\003\340A\003\0228\n\nencryption\030\024 \001(\0132$.google.stora"
+          + "ge.v2.Bucket.Encryption\0222\n\007billing\030\025 \001(\013"
+          + "2!.google.storage.v2.Bucket.Billing\022C\n\020r"
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+          + "\032days_since_noncurrent_time\030\t \001(\005H\004\210\001\001\0221"
+          + "\n\026noncurrent_time_before\030\n \001(\0132\021.google."
+          + "type.Date\022\026\n\016matches_prefix\030\013 \003(\t\022\026\n\016mat"
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+          + "_custom_timeB\035\n\033_days_since_noncurrent_t"
+          + "ime\0328\n\007Logging\022\022\n\nlog_bucket\030\001 \001(\t\022\031\n\021lo"
+          + "g_object_prefix\030\002 \001(\t\032r\n\017RetentionPolicy"
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+          + "ed\030\001 \001(\010\032;\n\007Website\022\030\n\020main_page_suffix\030"
+          + "\001 \001(\t\022\026\n\016not_found_page\030\002 \001(\t\032/\n\025CustomP"
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+          + "ucket\022#projects/{project}/buckets/{bucke"
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+          + "\340A\002\022\014\n\004etag\030\007 \001(\t\022\030\n\013event_types\030\003 \003(\tB\003"
+          + "\340A\001\022U\n\021custom_attributes\030\004 \003(\01325.google."
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+          + "{bucket}/notificationConfigs/{notificati"
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+          + "v2.Object\022\020\n\010prefixes\030\002 \003(\t\022\027\n\017next_page"
+          + "_token\030\003 \001(\t\"3\n\013ProjectTeam\022\026\n\016project_n"
+          + "umber\030\001 \001(\t\022\014\n\004team\030\002 \001(\t\"\'\n\016ServiceAcco"
+          + "unt\022\025\n\remail_address\030\001 \001(\t\"*\n\005Owner\022\016\n\006e"
+          + "ntity\030\001 \001(\t\022\021\n\tentity_id\030\002 \001(\t\"C\n\014Conten",
+      "tRange\022\r\n\005start\030\001 \001(\003\022\013\n\003end\030\002 \001(\003\022\027\n\017co"
+          + "mplete_length\030\003 \001(\0032\332$\n\007Storage\022r\n\014Delet"
+          + "eBucket\022&.google.storage.v2.DeleteBucket"
+          + "Request\032\026.google.protobuf.Empty\"\"\212\323\344\223\002\025\022"
+          + "\023\n\004name\022\013{bucket=**}\332A\004name\022o\n\tGetBucket"
+          + "\022#.google.storage.v2.GetBucketRequest\032\031."
+          + "google.storage.v2.Bucket\"\"\212\323\344\223\002\025\022\023\n\004name"
+          + "\022\013{bucket=**}\332A\004name\022m\n\014CreateBucket\022&.g"
+          + "oogle.storage.v2.CreateBucketRequest\032\031.g"
+          + "oogle.storage.v2.Bucket\"\032\332A\027parent,bucke"
+          + "t,bucket_id\022g\n\013ListBuckets\022%.google.stor"
+          + "age.v2.ListBucketsRequest\032&.google.stora"
+          + "ge.v2.ListBucketsResponse\"\t\332A\006parent\022\223\001\n"
+          + "\031LockBucketRetentionPolicy\0223.google.stor"
+          + "age.v2.LockBucketRetentionPolicyRequest\032"
+          + "\031.google.storage.v2.Bucket\"&\212\323\344\223\002\027\022\025\n\006bu"
+          + "cket\022\013{bucket=**}\332A\006bucket\022\253\001\n\014GetIamPol"
+          + "icy\022\".google.iam.v1.GetIamPolicyRequest\032"
+          + "\025.google.iam.v1.Policy\"`\212\323\344\223\002O\022\027\n\010resour"
+          + "ce\022\013{bucket=**}\0224\n\010resource\022({bucket=pro"
+          + "jects/*/buckets/*}/objects/**\332A\010resource"
+          + "\022\262\001\n\014SetIamPolicy\022\".google.iam.v1.SetIam"
+          + "PolicyRequest\032\025.google.iam.v1.Policy\"g\212\323"
+          + "\344\223\002O\022\027\n\010resource\022\013{bucket=**}\0224\n\010resourc"
+          + "e\022({bucket=projects/*/buckets/*}/objects"
+          + "/**\332A\017resource,policy\022\327\001\n\022TestIamPermiss"
+          + "ions\022(.google.iam.v1.TestIamPermissionsR"
+          + "equest\032).google.iam.v1.TestIamPermission"
+          + "sResponse\"l\212\323\344\223\002O\022\027\n\010resource\022\013{bucket=*"
+          + "*}\0224\n\010resource\022({bucket=projects/*/bucke"
+          + "ts/*}/objects/**\332A\024resource,permissions\022"
+          + "\212\001\n\014UpdateBucket\022&.google.storage.v2.Upd"
+          + "ateBucketRequest\032\031.google.storage.v2.Buc"
+          + "ket\"7\212\323\344\223\002\034\022\032\n\013bucket.name\022\013{bucket=**}\332"
+          + "A\022bucket,update_mask\022\223\001\n\022DeleteNotificat"
+          + "ion\022,.google.storage.v2.DeleteNotificati"
+          + "onRequest\032\026.google.protobuf.Empty\"7\212\323\344\223\002"
+          + "*\022(\n\004name\022 {bucket=projects/*/buckets/*}"
+          + "/**\332A\004name\022\226\001\n\017GetNotification\022).google."
+          + "storage.v2.GetNotificationRequest\032\037.goog"
+          + "le.storage.v2.Notification\"7\212\323\344\223\002*\022(\n\004na"
+          + "me\022 {bucket=projects/*/buckets/*}/**\332A\004n"
+          + "ame\022\230\001\n\022CreateNotification\022,.google.stor"
+          + "age.v2.CreateNotificationRequest\032\037.googl"
+          + "e.storage.v2.Notification\"3\212\323\344\223\002\027\022\025\n\006par"
+          + "ent\022\013{bucket=**}\332A\023parent,notification\022\226"
+          + "\001\n\021ListNotifications\022+.google.storage.v2"
+          + ".ListNotificationsRequest\032,.google.stora"
+          + "ge.v2.ListNotificationsResponse\"&\212\323\344\223\002\027\022"
+          + "\025\n\006parent\022\013{bucket=**}\332A\006parent\022~\n\rCompo"
+          + "seObject\022\'.google.storage.v2.ComposeObje"
+          + "ctRequest\032\031.google.storage.v2.Object\")\212\323"
+          + "\344\223\002#\022!\n\022destination.bucket\022\013{bucket=**}\022"
+          + "\230\001\n\014DeleteObject\022&.google.storage.v2.Del"
+          + "eteObjectRequest\032\026.google.protobuf.Empty"
+          + "\"H\212\323\344\223\002\027\022\025\n\006bucket\022\013{bucket=**}\332A\rbucket"
+          + ",object\332A\030bucket,object,generation\022\272\001\n\024C"
+          + "ancelResumableWrite\022..google.storage.v2."
+          + "CancelResumableWriteRequest\032/.google.sto"
+          + "rage.v2.CancelResumableWriteResponse\"A\212\323"
+          + "\344\223\002/\022-\n\tupload_id\022 {bucket=projects/*/bu"
+          + "ckets/*}/**\332A\tupload_id\022\225\001\n\tGetObject\022#."
+          + "google.storage.v2.GetObjectRequest\032\031.goo"
+          + "gle.storage.v2.Object\"H\212\323\344\223\002\027\022\025\n\006bucket\022"
+          + "\013{bucket=**}\332A\rbucket,object\332A\030bucket,ob"
+          + "ject,generation\022\245\001\n\nReadObject\022$.google."
+          + "storage.v2.ReadObjectRequest\032%.google.st"
+          + "orage.v2.ReadObjectResponse\"H\212\323\344\223\002\027\022\025\n\006b"
+          + "ucket\022\013{bucket=**}\332A\rbucket,object\332A\030buc"
+          + "ket,object,generation0\001\022\214\001\n\014UpdateObject"
+          + "\022&.google.storage.v2.UpdateObjectRequest"
+          + "\032\031.google.storage.v2.Object\"9\212\323\344\223\002\036\022\034\n\ro"
+          + "bject.bucket\022\013{bucket=**}\332A\022object,updat"
+          + "e_mask\022\307\001\n\013WriteObject\022%.google.storage."
+          + "v2.WriteObjectRequest\032&.google.storage.v"
+          + "2.WriteObjectResponse\"g\212\323\344\223\002a\0220\n!write_o"
+          + "bject_spec.resource.bucket\022\013{bucket=**}\022"
+          + "-\n\tupload_id\022 {bucket=projects/*/buckets"
+          + "/*}/**(\001\022\204\001\n\013ListObjects\022%.google.storag"
+          + "e.v2.ListObjectsRequest\032&.google.storage"
+          + ".v2.ListObjectsResponse\"&\212\323\344\223\002\027\022\025\n\006paren"
+          + "t\022\013{bucket=**}\332A\006parent\022\230\001\n\rRewriteObjec"
+          + "t\022\'.google.storage.v2.RewriteObjectReque"
+          + "st\032\".google.storage.v2.RewriteResponse\":"
+          + "\212\323\344\223\0024\022\017\n\rsource_bucket\022!\n\022destination_b"
+          + "ucket\022\013{bucket=**}\022\256\001\n\023StartResumableWri"
+          + "te\022-.google.storage.v2.StartResumableWri"
+          + "teRequest\032..google.storage.v2.StartResum"
+          + "ableWriteResponse\"8\212\323\344\223\0022\0220\n!write_objec"
+          + "t_spec.resource.bucket\022\013{bucket=**}\022\256\001\n\020"
+          + "QueryWriteStatus\022*.google.storage.v2.Que"
+          + "ryWriteStatusRequest\032+.google.storage.v2"
+          + ".QueryWriteStatusResponse\"A\212\323\344\223\002/\022-\n\tupl"
+          + "oad_id\022 {bucket=projects/*/buckets/*}/**"
+          + "\332A\tupload_id\022o\n\021GetServiceAccount\022+.goog"
+          + "le.storage.v2.GetServiceAccountRequest\032!"
+          + ".google.storage.v2.ServiceAccount\"\n\332A\007pr"
+          + "oject\022\204\001\n\rCreateHmacKey\022\'.google.storage"
+          + ".v2.CreateHmacKeyRequest\032(.google.storag"
+          + "e.v2.CreateHmacKeyResponse\" \332A\035project,s"
+          + "ervice_account_email\022f\n\rDeleteHmacKey\022\'."
+          + "google.storage.v2.DeleteHmacKeyRequest\032\026"
+          + ".google.protobuf.Empty\"\024\332A\021access_id,pro"
+          + "ject\022l\n\nGetHmacKey\022$.google.storage.v2.G"
+          + "etHmacKeyRequest\032\".google.storage.v2.Hma"
+          + "cKeyMetadata\"\024\332A\021access_id,project\022k\n\014Li"
+          + "stHmacKeys\022&.google.storage.v2.ListHmacK"
+          + "eysRequest\032\'.google.storage.v2.ListHmacK"
+          + "eysResponse\"\n\332A\007project\022u\n\rUpdateHmacKey"
+          + "\022\'.google.storage.v2.UpdateHmacKeyReques"
+          + "t\032\".google.storage.v2.HmacKeyMetadata\"\027\332"
+          + "A\024hmac_key,update_mask\032\247\002\312A\026storage.goog"
+          + "leapis.com\322A\212\002https://www.googleapis.com"
+          + "/auth/cloud-platform,https://www.googlea"
+          + "pis.com/auth/cloud-platform.read-only,ht"
+          + "tps://www.googleapis.com/auth/devstorage"
+          + ".full_control,https://www.googleapis.com"
+          + "/auth/devstorage.read_only,https://www.g"
+          + "oogleapis.com/auth/devstorage.read_write"
+          + "B\334\001\n\025com.google.storage.v2B\014StorageProto"
+          + "P\001Z8google.golang.org/genproto/googleapi"
+          + "s/storage/v2;storage\352Ax\n!cloudkms.google"
+          + "apis.com/CryptoKey\022Sprojects/{project}/l"
+          + "ocations/{location}/keyRings/{key_ring}/"
+          + "cryptoKeys/{crypto_key}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -823,6 +865,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.ClientProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.ResourceProto.getDescriptor(),
+              com.google.api.RoutingProto.getDescriptor(),
               com.google.iam.v1.IamPolicyProto.getDescriptor(),
               com.google.iam.v1.PolicyProto.getDescriptor(),
               com.google.protobuf.EmptyProto.getDescriptor(),
@@ -985,7 +1028,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "Bucket",
               "Object",
-              "UploadId",
               "Generation",
               "IfGenerationMatch",
               "IfGenerationNotMatch",
@@ -997,8 +1039,22 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IfMetagenerationMatch",
               "IfMetagenerationNotMatch",
             });
-    internal_static_google_storage_v2_ReadObjectRequest_descriptor =
+    internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor =
         getDescriptor().getMessageTypes().get(14);
+    internal_static_google_storage_v2_CancelResumableWriteRequest_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_storage_v2_CancelResumableWriteRequest_descriptor,
+            new java.lang.String[] {
+              "UploadId",
+            });
+    internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor =
+        getDescriptor().getMessageTypes().get(15);
+    internal_static_google_storage_v2_CancelResumableWriteResponse_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_storage_v2_CancelResumableWriteResponse_descriptor,
+            new java.lang.String[] {});
+    internal_static_google_storage_v2_ReadObjectRequest_descriptor =
+        getDescriptor().getMessageTypes().get(16);
     internal_static_google_storage_v2_ReadObjectRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ReadObjectRequest_descriptor,
@@ -1021,7 +1077,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReadMask",
             });
     internal_static_google_storage_v2_GetObjectRequest_descriptor =
-        getDescriptor().getMessageTypes().get(15);
+        getDescriptor().getMessageTypes().get(17);
     internal_static_google_storage_v2_GetObjectRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_GetObjectRequest_descriptor,
@@ -1042,7 +1098,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReadMask",
             });
     internal_static_google_storage_v2_ReadObjectResponse_descriptor =
-        getDescriptor().getMessageTypes().get(16);
+        getDescriptor().getMessageTypes().get(18);
     internal_static_google_storage_v2_ReadObjectResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ReadObjectResponse_descriptor,
@@ -1050,7 +1106,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ChecksummedData", "ObjectChecksums", "ContentRange", "Metadata",
             });
     internal_static_google_storage_v2_WriteObjectSpec_descriptor =
-        getDescriptor().getMessageTypes().get(17);
+        getDescriptor().getMessageTypes().get(19);
     internal_static_google_storage_v2_WriteObjectSpec_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_WriteObjectSpec_descriptor,
@@ -1061,13 +1117,15 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IfGenerationNotMatch",
               "IfMetagenerationMatch",
               "IfMetagenerationNotMatch",
+              "ObjectSize",
               "IfGenerationMatch",
               "IfGenerationNotMatch",
               "IfMetagenerationMatch",
               "IfMetagenerationNotMatch",
+              "ObjectSize",
             });
     internal_static_google_storage_v2_WriteObjectRequest_descriptor =
-        getDescriptor().getMessageTypes().get(18);
+        getDescriptor().getMessageTypes().get(20);
     internal_static_google_storage_v2_WriteObjectRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_WriteObjectRequest_descriptor,
@@ -1083,7 +1141,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Data",
             });
     internal_static_google_storage_v2_WriteObjectResponse_descriptor =
-        getDescriptor().getMessageTypes().get(19);
+        getDescriptor().getMessageTypes().get(21);
     internal_static_google_storage_v2_WriteObjectResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_WriteObjectResponse_descriptor,
@@ -1091,7 +1149,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "PersistedSize", "Resource", "WriteStatus",
             });
     internal_static_google_storage_v2_ListObjectsRequest_descriptor =
-        getDescriptor().getMessageTypes().get(20);
+        getDescriptor().getMessageTypes().get(22);
     internal_static_google_storage_v2_ListObjectsRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ListObjectsRequest_descriptor,
@@ -1109,7 +1167,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReadMask",
             });
     internal_static_google_storage_v2_QueryWriteStatusRequest_descriptor =
-        getDescriptor().getMessageTypes().get(21);
+        getDescriptor().getMessageTypes().get(23);
     internal_static_google_storage_v2_QueryWriteStatusRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_QueryWriteStatusRequest_descriptor,
@@ -1117,7 +1175,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "UploadId", "CommonObjectRequestParams",
             });
     internal_static_google_storage_v2_QueryWriteStatusResponse_descriptor =
-        getDescriptor().getMessageTypes().get(22);
+        getDescriptor().getMessageTypes().get(24);
     internal_static_google_storage_v2_QueryWriteStatusResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_QueryWriteStatusResponse_descriptor,
@@ -1125,7 +1183,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "PersistedSize", "Resource", "WriteStatus",
             });
     internal_static_google_storage_v2_RewriteObjectRequest_descriptor =
-        getDescriptor().getMessageTypes().get(23);
+        getDescriptor().getMessageTypes().get(25);
     internal_static_google_storage_v2_RewriteObjectRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_RewriteObjectRequest_descriptor,
@@ -1162,7 +1220,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IfSourceMetagenerationNotMatch",
             });
     internal_static_google_storage_v2_RewriteResponse_descriptor =
-        getDescriptor().getMessageTypes().get(24);
+        getDescriptor().getMessageTypes().get(26);
     internal_static_google_storage_v2_RewriteResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_RewriteResponse_descriptor,
@@ -1170,7 +1228,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "TotalBytesRewritten", "ObjectSize", "Done", "RewriteToken", "Resource",
             });
     internal_static_google_storage_v2_StartResumableWriteRequest_descriptor =
-        getDescriptor().getMessageTypes().get(25);
+        getDescriptor().getMessageTypes().get(27);
     internal_static_google_storage_v2_StartResumableWriteRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_StartResumableWriteRequest_descriptor,
@@ -1178,7 +1236,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "WriteObjectSpec", "CommonObjectRequestParams",
             });
     internal_static_google_storage_v2_StartResumableWriteResponse_descriptor =
-        getDescriptor().getMessageTypes().get(26);
+        getDescriptor().getMessageTypes().get(28);
     internal_static_google_storage_v2_StartResumableWriteResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_StartResumableWriteResponse_descriptor,
@@ -1186,7 +1244,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "UploadId",
             });
     internal_static_google_storage_v2_UpdateObjectRequest_descriptor =
-        getDescriptor().getMessageTypes().get(27);
+        getDescriptor().getMessageTypes().get(29);
     internal_static_google_storage_v2_UpdateObjectRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_UpdateObjectRequest_descriptor,
@@ -1205,7 +1263,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IfMetagenerationNotMatch",
             });
     internal_static_google_storage_v2_GetServiceAccountRequest_descriptor =
-        getDescriptor().getMessageTypes().get(28);
+        getDescriptor().getMessageTypes().get(30);
     internal_static_google_storage_v2_GetServiceAccountRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_GetServiceAccountRequest_descriptor,
@@ -1213,7 +1271,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Project",
             });
     internal_static_google_storage_v2_CreateHmacKeyRequest_descriptor =
-        getDescriptor().getMessageTypes().get(29);
+        getDescriptor().getMessageTypes().get(31);
     internal_static_google_storage_v2_CreateHmacKeyRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_CreateHmacKeyRequest_descriptor,
@@ -1221,7 +1279,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Project", "ServiceAccountEmail",
             });
     internal_static_google_storage_v2_CreateHmacKeyResponse_descriptor =
-        getDescriptor().getMessageTypes().get(30);
+        getDescriptor().getMessageTypes().get(32);
     internal_static_google_storage_v2_CreateHmacKeyResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_CreateHmacKeyResponse_descriptor,
@@ -1229,7 +1287,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Metadata", "SecretKeyBytes",
             });
     internal_static_google_storage_v2_DeleteHmacKeyRequest_descriptor =
-        getDescriptor().getMessageTypes().get(31);
+        getDescriptor().getMessageTypes().get(33);
     internal_static_google_storage_v2_DeleteHmacKeyRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_DeleteHmacKeyRequest_descriptor,
@@ -1237,7 +1295,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "AccessId", "Project",
             });
     internal_static_google_storage_v2_GetHmacKeyRequest_descriptor =
-        getDescriptor().getMessageTypes().get(32);
+        getDescriptor().getMessageTypes().get(34);
     internal_static_google_storage_v2_GetHmacKeyRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_GetHmacKeyRequest_descriptor,
@@ -1245,7 +1303,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "AccessId", "Project",
             });
     internal_static_google_storage_v2_ListHmacKeysRequest_descriptor =
-        getDescriptor().getMessageTypes().get(33);
+        getDescriptor().getMessageTypes().get(35);
     internal_static_google_storage_v2_ListHmacKeysRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ListHmacKeysRequest_descriptor,
@@ -1253,7 +1311,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Project", "PageSize", "PageToken", "ServiceAccountEmail", "ShowDeletedKeys",
             });
     internal_static_google_storage_v2_ListHmacKeysResponse_descriptor =
-        getDescriptor().getMessageTypes().get(34);
+        getDescriptor().getMessageTypes().get(36);
     internal_static_google_storage_v2_ListHmacKeysResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ListHmacKeysResponse_descriptor,
@@ -1261,7 +1319,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "HmacKeys", "NextPageToken",
             });
     internal_static_google_storage_v2_UpdateHmacKeyRequest_descriptor =
-        getDescriptor().getMessageTypes().get(35);
+        getDescriptor().getMessageTypes().get(37);
     internal_static_google_storage_v2_UpdateHmacKeyRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_UpdateHmacKeyRequest_descriptor,
@@ -1269,7 +1327,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "HmacKey", "UpdateMask",
             });
     internal_static_google_storage_v2_CommonObjectRequestParams_descriptor =
-        getDescriptor().getMessageTypes().get(36);
+        getDescriptor().getMessageTypes().get(38);
     internal_static_google_storage_v2_CommonObjectRequestParams_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_CommonObjectRequestParams_descriptor,
@@ -1277,12 +1335,12 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "EncryptionAlgorithm", "EncryptionKeyBytes", "EncryptionKeySha256Bytes",
             });
     internal_static_google_storage_v2_ServiceConstants_descriptor =
-        getDescriptor().getMessageTypes().get(37);
+        getDescriptor().getMessageTypes().get(39);
     internal_static_google_storage_v2_ServiceConstants_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ServiceConstants_descriptor,
             new java.lang.String[] {});
-    internal_static_google_storage_v2_Bucket_descriptor = getDescriptor().getMessageTypes().get(38);
+    internal_static_google_storage_v2_Bucket_descriptor = getDescriptor().getMessageTypes().get(40);
     internal_static_google_storage_v2_Bucket_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_Bucket_descriptor,
@@ -1460,7 +1518,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_storage_v2_BucketAccessControl_descriptor =
-        getDescriptor().getMessageTypes().get(39);
+        getDescriptor().getMessageTypes().get(41);
     internal_static_google_storage_v2_BucketAccessControl_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_BucketAccessControl_descriptor,
@@ -1468,7 +1526,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Role", "Id", "Entity", "EntityId", "Etag", "Email", "Domain", "ProjectTeam",
             });
     internal_static_google_storage_v2_ChecksummedData_descriptor =
-        getDescriptor().getMessageTypes().get(40);
+        getDescriptor().getMessageTypes().get(42);
     internal_static_google_storage_v2_ChecksummedData_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ChecksummedData_descriptor,
@@ -1476,7 +1534,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Content", "Crc32C", "Crc32C",
             });
     internal_static_google_storage_v2_ObjectChecksums_descriptor =
-        getDescriptor().getMessageTypes().get(41);
+        getDescriptor().getMessageTypes().get(43);
     internal_static_google_storage_v2_ObjectChecksums_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ObjectChecksums_descriptor,
@@ -1484,7 +1542,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Crc32C", "Md5Hash", "Crc32C",
             });
     internal_static_google_storage_v2_HmacKeyMetadata_descriptor =
-        getDescriptor().getMessageTypes().get(42);
+        getDescriptor().getMessageTypes().get(44);
     internal_static_google_storage_v2_HmacKeyMetadata_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_HmacKeyMetadata_descriptor,
@@ -1499,7 +1557,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Etag",
             });
     internal_static_google_storage_v2_Notification_descriptor =
-        getDescriptor().getMessageTypes().get(43);
+        getDescriptor().getMessageTypes().get(45);
     internal_static_google_storage_v2_Notification_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_Notification_descriptor,
@@ -1521,14 +1579,14 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_storage_v2_CustomerEncryption_descriptor =
-        getDescriptor().getMessageTypes().get(44);
+        getDescriptor().getMessageTypes().get(46);
     internal_static_google_storage_v2_CustomerEncryption_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_CustomerEncryption_descriptor,
             new java.lang.String[] {
               "EncryptionAlgorithm", "KeySha256Bytes",
             });
-    internal_static_google_storage_v2_Object_descriptor = getDescriptor().getMessageTypes().get(45);
+    internal_static_google_storage_v2_Object_descriptor = getDescriptor().getMessageTypes().get(47);
     internal_static_google_storage_v2_Object_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_Object_descriptor,
@@ -1571,7 +1629,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_storage_v2_ObjectAccessControl_descriptor =
-        getDescriptor().getMessageTypes().get(46);
+        getDescriptor().getMessageTypes().get(48);
     internal_static_google_storage_v2_ObjectAccessControl_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ObjectAccessControl_descriptor,
@@ -1579,7 +1637,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Role", "Id", "Entity", "EntityId", "Etag", "Email", "Domain", "ProjectTeam",
             });
     internal_static_google_storage_v2_ListObjectsResponse_descriptor =
-        getDescriptor().getMessageTypes().get(47);
+        getDescriptor().getMessageTypes().get(49);
     internal_static_google_storage_v2_ListObjectsResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ListObjectsResponse_descriptor,
@@ -1587,7 +1645,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Objects", "Prefixes", "NextPageToken",
             });
     internal_static_google_storage_v2_ProjectTeam_descriptor =
-        getDescriptor().getMessageTypes().get(48);
+        getDescriptor().getMessageTypes().get(50);
     internal_static_google_storage_v2_ProjectTeam_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ProjectTeam_descriptor,
@@ -1595,14 +1653,14 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ProjectNumber", "Team",
             });
     internal_static_google_storage_v2_ServiceAccount_descriptor =
-        getDescriptor().getMessageTypes().get(49);
+        getDescriptor().getMessageTypes().get(51);
     internal_static_google_storage_v2_ServiceAccount_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ServiceAccount_descriptor,
             new java.lang.String[] {
               "EmailAddress",
             });
-    internal_static_google_storage_v2_Owner_descriptor = getDescriptor().getMessageTypes().get(50);
+    internal_static_google_storage_v2_Owner_descriptor = getDescriptor().getMessageTypes().get(52);
     internal_static_google_storage_v2_Owner_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_Owner_descriptor,
@@ -1610,7 +1668,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Entity", "EntityId",
             });
     internal_static_google_storage_v2_ContentRange_descriptor =
-        getDescriptor().getMessageTypes().get(51);
+        getDescriptor().getMessageTypes().get(53);
     internal_static_google_storage_v2_ContentRange_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_ContentRange_descriptor,
@@ -1626,11 +1684,13 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     registry.add(com.google.api.ResourceProto.resource);
     registry.add(com.google.api.ResourceProto.resourceDefinition);
     registry.add(com.google.api.ResourceProto.resourceReference);
+    registry.add(com.google.api.RoutingProto.routing);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
     com.google.api.ClientProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.ResourceProto.getDescriptor();
+    com.google.api.RoutingProto.getDescriptor();
     com.google.iam.v1.IamPolicyProto.getDescriptor();
     com.google.iam.v1.PolicyProto.getDescriptor();
     com.google.protobuf.EmptyProto.getDescriptor();
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequest.java
index bb3245c69..49084ee4e 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequest.java
@@ -23,6 +23,9 @@
  *
  * <pre>
  * Request object to update an HMAC key state.
+ * HmacKeyMetadata.state is required and the only writable field in
+ * UpdateHmacKey operation. Specifying fields other than state will result in an
+ * error.
  * </pre>
  *
  * Protobuf type {@code google.storage.v2.UpdateHmacKeyRequest}
@@ -203,6 +206,8 @@ public com.google.storage.v2.HmacKeyMetadataOrBuilder getHmacKeyOrBuilder() {
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -218,6 +223,8 @@ public boolean hasUpdateMask() {
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -233,6 +240,8 @@ public com.google.protobuf.FieldMask getUpdateMask() {
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -425,6 +434,9 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    *
    * <pre>
    * Request object to update an HMAC key state.
+   * HmacKeyMetadata.state is required and the only writable field in
+   * UpdateHmacKey operation. Specifying fields other than state will result in an
+   * error.
    * </pre>
    *
    * Protobuf type {@code google.storage.v2.UpdateHmacKeyRequest}
@@ -839,6 +851,8 @@ public com.google.storage.v2.HmacKeyMetadataOrBuilder getHmacKeyOrBuilder() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -853,6 +867,8 @@ public boolean hasUpdateMask() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -873,6 +889,8 @@ public com.google.protobuf.FieldMask getUpdateMask() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -895,6 +913,8 @@ public Builder setUpdateMask(com.google.protobuf.FieldMask value) {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -914,6 +934,8 @@ public Builder setUpdateMask(com.google.protobuf.FieldMask.Builder builderForVal
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -938,6 +960,8 @@ public Builder mergeUpdateMask(com.google.protobuf.FieldMask value) {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -958,6 +982,8 @@ public Builder clearUpdateMask() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -972,6 +998,8 @@ public com.google.protobuf.FieldMask.Builder getUpdateMaskBuilder() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -990,6 +1018,8 @@ public com.google.protobuf.FieldMaskOrBuilder getUpdateMaskOrBuilder() {
      *
      * <pre>
      * Update mask for hmac_key.
+     * Not specifying any fields will mean only the `state` field is updated to
+     * the value specified in `hmac_key`.
      * </pre>
      *
      * <code>.google.protobuf.FieldMask update_mask = 3;</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequestOrBuilder.java
index 5557204b1..6dddfc06e 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/UpdateHmacKeyRequestOrBuilder.java
@@ -78,6 +78,8 @@ public interface UpdateHmacKeyRequestOrBuilder
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -90,6 +92,8 @@ public interface UpdateHmacKeyRequestOrBuilder
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
@@ -102,6 +106,8 @@ public interface UpdateHmacKeyRequestOrBuilder
    *
    * <pre>
    * Update mask for hmac_key.
+   * Not specifying any fields will mean only the `state` field is updated to
+   * the value specified in `hmac_key`.
    * </pre>
    *
    * <code>.google.protobuf.FieldMask update_mask = 3;</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpec.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpec.java
index 0081affc5..18916a0f6 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpec.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpec.java
@@ -117,6 +117,12 @@ private WriteObjectSpec(
               predefinedAcl_ = s;
               break;
             }
+          case 64:
+            {
+              bitField0_ |= 0x00000010;
+              objectSize_ = input.readInt64();
+              break;
+            }
           default:
             {
               if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
@@ -399,6 +405,51 @@ public long getIfMetagenerationNotMatch() {
     return ifMetagenerationNotMatch_;
   }
 
+  public static final int OBJECT_SIZE_FIELD_NUMBER = 8;
+  private long objectSize_;
+  /**
+   *
+   *
+   * <pre>
+   * The expected final object size being uploaded.
+   * If this value is set, closing the stream after writing fewer or more than
+   * `object_size` bytes will result in an OUT_OF_RANGE error.
+   * This situation is considered a client error, and if such an error occurs
+   * you must start the upload over from scratch, this time sending the correct
+   * number of bytes.
+   * The `object_size` value is ignored for one-shot (non-resumable) writes.
+   * </pre>
+   *
+   * <code>optional int64 object_size = 8;</code>
+   *
+   * @return Whether the objectSize field is set.
+   */
+  @java.lang.Override
+  public boolean hasObjectSize() {
+    return ((bitField0_ & 0x00000010) != 0);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The expected final object size being uploaded.
+   * If this value is set, closing the stream after writing fewer or more than
+   * `object_size` bytes will result in an OUT_OF_RANGE error.
+   * This situation is considered a client error, and if such an error occurs
+   * you must start the upload over from scratch, this time sending the correct
+   * number of bytes.
+   * The `object_size` value is ignored for one-shot (non-resumable) writes.
+   * </pre>
+   *
+   * <code>optional int64 object_size = 8;</code>
+   *
+   * @return The objectSize.
+   */
+  @java.lang.Override
+  public long getObjectSize() {
+    return objectSize_;
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -431,6 +482,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(predefinedAcl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, predefinedAcl_);
     }
+    if (((bitField0_ & 0x00000010) != 0)) {
+      output.writeInt64(8, objectSize_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -458,6 +512,9 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(predefinedAcl_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, predefinedAcl_);
     }
+    if (((bitField0_ & 0x00000010) != 0)) {
+      size += com.google.protobuf.CodedOutputStream.computeInt64Size(8, objectSize_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -494,6 +551,10 @@ public boolean equals(final java.lang.Object obj) {
     if (hasIfMetagenerationNotMatch()) {
       if (getIfMetagenerationNotMatch() != other.getIfMetagenerationNotMatch()) return false;
     }
+    if (hasObjectSize() != other.hasObjectSize()) return false;
+    if (hasObjectSize()) {
+      if (getObjectSize() != other.getObjectSize()) return false;
+    }
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -527,6 +588,10 @@ public int hashCode() {
       hash = (37 * hash) + IF_METAGENERATION_NOT_MATCH_FIELD_NUMBER;
       hash = (53 * hash) + com.google.protobuf.Internal.hashLong(getIfMetagenerationNotMatch());
     }
+    if (hasObjectSize()) {
+      hash = (37 * hash) + OBJECT_SIZE_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(getObjectSize());
+    }
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -687,6 +752,8 @@ public Builder clear() {
       bitField0_ = (bitField0_ & ~0x00000004);
       ifMetagenerationNotMatch_ = 0L;
       bitField0_ = (bitField0_ & ~0x00000008);
+      objectSize_ = 0L;
+      bitField0_ = (bitField0_ & ~0x00000010);
       return this;
     }
 
@@ -738,6 +805,10 @@ public com.google.storage.v2.WriteObjectSpec buildPartial() {
         result.ifMetagenerationNotMatch_ = ifMetagenerationNotMatch_;
         to_bitField0_ |= 0x00000008;
       }
+      if (((from_bitField0_ & 0x00000010) != 0)) {
+        result.objectSize_ = objectSize_;
+        to_bitField0_ |= 0x00000010;
+      }
       result.bitField0_ = to_bitField0_;
       onBuilt();
       return result;
@@ -807,6 +878,9 @@ public Builder mergeFrom(com.google.storage.v2.WriteObjectSpec other) {
       if (other.hasIfMetagenerationNotMatch()) {
         setIfMetagenerationNotMatch(other.getIfMetagenerationNotMatch());
       }
+      if (other.hasObjectSize()) {
+        setObjectSize(other.getObjectSize());
+      }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
       return this;
@@ -1429,6 +1503,97 @@ public Builder clearIfMetagenerationNotMatch() {
       return this;
     }
 
+    private long objectSize_;
+    /**
+     *
+     *
+     * <pre>
+     * The expected final object size being uploaded.
+     * If this value is set, closing the stream after writing fewer or more than
+     * `object_size` bytes will result in an OUT_OF_RANGE error.
+     * This situation is considered a client error, and if such an error occurs
+     * you must start the upload over from scratch, this time sending the correct
+     * number of bytes.
+     * The `object_size` value is ignored for one-shot (non-resumable) writes.
+     * </pre>
+     *
+     * <code>optional int64 object_size = 8;</code>
+     *
+     * @return Whether the objectSize field is set.
+     */
+    @java.lang.Override
+    public boolean hasObjectSize() {
+      return ((bitField0_ & 0x00000010) != 0);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The expected final object size being uploaded.
+     * If this value is set, closing the stream after writing fewer or more than
+     * `object_size` bytes will result in an OUT_OF_RANGE error.
+     * This situation is considered a client error, and if such an error occurs
+     * you must start the upload over from scratch, this time sending the correct
+     * number of bytes.
+     * The `object_size` value is ignored for one-shot (non-resumable) writes.
+     * </pre>
+     *
+     * <code>optional int64 object_size = 8;</code>
+     *
+     * @return The objectSize.
+     */
+    @java.lang.Override
+    public long getObjectSize() {
+      return objectSize_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The expected final object size being uploaded.
+     * If this value is set, closing the stream after writing fewer or more than
+     * `object_size` bytes will result in an OUT_OF_RANGE error.
+     * This situation is considered a client error, and if such an error occurs
+     * you must start the upload over from scratch, this time sending the correct
+     * number of bytes.
+     * The `object_size` value is ignored for one-shot (non-resumable) writes.
+     * </pre>
+     *
+     * <code>optional int64 object_size = 8;</code>
+     *
+     * @param value The objectSize to set.
+     * @return This builder for chaining.
+     */
+    public Builder setObjectSize(long value) {
+      bitField0_ |= 0x00000010;
+      objectSize_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The expected final object size being uploaded.
+     * If this value is set, closing the stream after writing fewer or more than
+     * `object_size` bytes will result in an OUT_OF_RANGE error.
+     * This situation is considered a client error, and if such an error occurs
+     * you must start the upload over from scratch, this time sending the correct
+     * number of bytes.
+     * The `object_size` value is ignored for one-shot (non-resumable) writes.
+     * </pre>
+     *
+     * <code>optional int64 object_size = 8;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearObjectSize() {
+      bitField0_ = (bitField0_ & ~0x00000010);
+      objectSize_ = 0L;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpecOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpecOrBuilder.java
index 1b455397d..dd6376acc 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpecOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectSpecOrBuilder.java
@@ -200,4 +200,41 @@ public interface WriteObjectSpecOrBuilder
    * @return The ifMetagenerationNotMatch.
    */
   long getIfMetagenerationNotMatch();
+
+  /**
+   *
+   *
+   * <pre>
+   * The expected final object size being uploaded.
+   * If this value is set, closing the stream after writing fewer or more than
+   * `object_size` bytes will result in an OUT_OF_RANGE error.
+   * This situation is considered a client error, and if such an error occurs
+   * you must start the upload over from scratch, this time sending the correct
+   * number of bytes.
+   * The `object_size` value is ignored for one-shot (non-resumable) writes.
+   * </pre>
+   *
+   * <code>optional int64 object_size = 8;</code>
+   *
+   * @return Whether the objectSize field is set.
+   */
+  boolean hasObjectSize();
+  /**
+   *
+   *
+   * <pre>
+   * The expected final object size being uploaded.
+   * If this value is set, closing the stream after writing fewer or more than
+   * `object_size` bytes will result in an OUT_OF_RANGE error.
+   * This situation is considered a client error, and if such an error occurs
+   * you must start the upload over from scratch, this time sending the correct
+   * number of bytes.
+   * The `object_size` value is ignored for one-shot (non-resumable) writes.
+   * </pre>
+   *
+   * <code>optional int64 object_size = 8;</code>
+   *
+   * @return The objectSize.
+   */
+  long getObjectSize();
 }
diff --git a/proto-google-cloud-storage-v2/src/main/proto/google/storage/v2/storage.proto b/proto-google-cloud-storage-v2/src/main/proto/google/storage/v2/storage.proto
index 4b0fb49aa..577463db5 100644
--- a/proto-google-cloud-storage-v2/src/main/proto/google/storage/v2/storage.proto
+++ b/proto-google-cloud-storage-v2/src/main/proto/google/storage/v2/storage.proto
@@ -19,6 +19,7 @@ package google.storage.v2;
 import "google/api/client.proto";
 import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
+import "google/api/routing.proto";
 import "google/iam/v1/iam_policy.proto";
 import "google/iam/v1/policy.proto";
 import "google/protobuf/empty.proto";
@@ -67,11 +68,23 @@ service Storage {
 
   // Permanently deletes an empty bucket.
   rpc DeleteBucket(DeleteBucketRequest) returns (google.protobuf.Empty) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "name"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "name";
   }
 
   // Returns metadata for the specified bucket.
   rpc GetBucket(GetBucketRequest) returns (Bucket) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "name"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "name";
   }
 
@@ -87,37 +100,91 @@ service Storage {
 
   // Locks retention policy on a bucket.
   rpc LockBucketRetentionPolicy(LockBucketRetentionPolicyRequest) returns (Bucket) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "bucket"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "bucket";
   }
 
-  // Gets the IAM policy for a specified bucket.
+  // Gets the IAM policy for a specified bucket or object.
   rpc GetIamPolicy(google.iam.v1.GetIamPolicyRequest) returns (google.iam.v1.Policy) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=**}"
+      }
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=projects/*/buckets/*}/objects/**"
+      }
+    };
     option (google.api.method_signature) = "resource";
   }
 
-  // Updates an IAM policy for the specified bucket.
+  // Updates an IAM policy for the specified bucket or object.
   rpc SetIamPolicy(google.iam.v1.SetIamPolicyRequest) returns (google.iam.v1.Policy) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=**}"
+      }
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=projects/*/buckets/*}/objects/**"
+      }
+    };
     option (google.api.method_signature) = "resource,policy";
   }
 
-  // Tests a set of permissions on the given bucket to see which, if
+  // Tests a set of permissions on the given bucket or object to see which, if
   // any, are held by the caller.
   rpc TestIamPermissions(google.iam.v1.TestIamPermissionsRequest) returns (google.iam.v1.TestIamPermissionsResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=**}"
+      }
+      routing_parameters {
+        field: "resource"
+        path_template: "{bucket=projects/*/buckets/*}/objects/**"
+      }
+    };
     option (google.api.method_signature) = "resource,permissions";
   }
 
   // Updates a bucket. Equivalent to JSON API's storage.buckets.patch method.
   rpc UpdateBucket(UpdateBucketRequest) returns (Bucket) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "bucket.name"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "bucket,update_mask";
   }
 
   // Permanently deletes a notification subscription.
   rpc DeleteNotification(DeleteNotificationRequest) returns (google.protobuf.Empty) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "name"
+        path_template: "{bucket=projects/*/buckets/*}/**"
+      }
+    };
     option (google.api.method_signature) = "name";
   }
 
   // View a notification config.
   rpc GetNotification(GetNotificationRequest) returns (Notification) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "name"
+        path_template: "{bucket=projects/*/buckets/*}/**"
+      }
+    };
     option (google.api.method_signature) = "name";
   }
 
@@ -126,35 +193,81 @@ service Storage {
   // Pub/Sub topics.
   // See https://cloud.google.com/storage/docs/pubsub-notifications.
   rpc CreateNotification(CreateNotificationRequest) returns (Notification) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "parent"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "parent,notification";
   }
 
   // Retrieves a list of notification subscriptions for a given bucket.
   rpc ListNotifications(ListNotificationsRequest) returns (ListNotificationsResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "parent"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "parent";
   }
 
   // Concatenates a list of existing objects into a new object in the same
   // bucket.
   rpc ComposeObject(ComposeObjectRequest) returns (Object) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "destination.bucket"
+        path_template: "{bucket=**}"
+      }
+    };
   }
 
   // Deletes an object and its metadata. Deletions are permanent if versioning
-  // is not enabled for the bucket, or if the `generation` parameter
-  // is used.
+  // is not enabled for the bucket, or if the `generation` parameter is used.
   rpc DeleteObject(DeleteObjectRequest) returns (google.protobuf.Empty) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "bucket"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "bucket,object";
     option (google.api.method_signature) = "bucket,object,generation";
   }
 
+  // Cancels an in-progress resumable upload.
+  rpc CancelResumableWrite(CancelResumableWriteRequest) returns (CancelResumableWriteResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "upload_id"
+        path_template: "{bucket=projects/*/buckets/*}/**"
+      }
+    };
+    option (google.api.method_signature) = "upload_id";
+  }
+
   // Retrieves an object's metadata.
   rpc GetObject(GetObjectRequest) returns (Object) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "bucket"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "bucket,object";
     option (google.api.method_signature) = "bucket,object,generation";
   }
 
   // Reads an object's data.
   rpc ReadObject(ReadObjectRequest) returns (stream ReadObjectResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "bucket"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "bucket,object";
     option (google.api.method_signature) = "bucket,object,generation";
   }
@@ -162,6 +275,12 @@ service Storage {
   // Updates an object's metadata.
   // Equivalent to JSON API's storage.objects.patch.
   rpc UpdateObject(UpdateObjectRequest) returns (Object) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "object.bucket"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "object,update_mask";
   }
 
@@ -218,22 +337,53 @@ service Storage {
   // status, with a WriteObjectResponse containing the finalized object's
   // metadata.
   rpc WriteObject(stream WriteObjectRequest) returns (WriteObjectResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "write_object_spec.resource.bucket"
+        path_template: "{bucket=**}"
+      }
+      routing_parameters {
+        field: "upload_id"
+        path_template: "{bucket=projects/*/buckets/*}/**"
+      }
+    };
   }
 
   // Retrieves a list of objects matching the criteria.
   rpc ListObjects(ListObjectsRequest) returns (ListObjectsResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "parent"
+        path_template: "{bucket=**}"
+      }
+    };
     option (google.api.method_signature) = "parent";
   }
 
   // Rewrites a source object to a destination object. Optionally overrides
   // metadata.
   rpc RewriteObject(RewriteObjectRequest) returns (RewriteResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "source_bucket"
+      }
+      routing_parameters {
+        field: "destination_bucket"
+        path_template: "{bucket=**}"
+      }
+    };
   }
 
   // Starts a resumable write. How long the write operation remains valid, and
   // what happens when the write operation becomes invalid, are
   // service-dependent.
   rpc StartResumableWrite(StartResumableWriteRequest) returns (StartResumableWriteResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "write_object_spec.resource.bucket"
+        path_template: "{bucket=**}"
+      }
+    };
   }
 
   // Determines the `persisted_size` for an object that is being written, which
@@ -250,6 +400,12 @@ service Storage {
   // object name, the sequence of returned `persisted_size` values will be
   // non-decreasing.
   rpc QueryWriteStatus(QueryWriteStatusRequest) returns (QueryWriteStatusResponse) {
+    option (google.api.routing) = {
+      routing_parameters {
+        field: "upload_id"
+        path_template: "{bucket=projects/*/buckets/*}/**"
+      }
+    };
     option (google.api.method_signature) = "upload_id";
   }
 
@@ -578,7 +734,7 @@ message ComposeObjectRequest {
 }
 
 // Message for deleting an object.
-// Either `bucket` and `object` *or* `upload_id` **must** be set (but not both).
+// `bucket` and `object` **must** be set.
 message DeleteObjectRequest {
   // Required. Name of the bucket in which the object resides.
   string bucket = 1 [(google.api.field_behavior) = REQUIRED];
@@ -586,11 +742,6 @@ message DeleteObjectRequest {
   // Required. The name of the object to delete (when not using a resumable write).
   string object = 2 [(google.api.field_behavior) = REQUIRED];
 
-  // The resumable upload_id of the object to delete (when deleting an
-  // in-progress resumable write). This should be copied from the `upload_id`
-  // field of `StartResumableWriteResponse`.
-  string upload_id = 3;
-
   // If present, permanently deletes a specific revision of this object (as
   // opposed to the latest version, the default).
   int64 generation = 4;
@@ -618,6 +769,20 @@ message DeleteObjectRequest {
   CommonObjectRequestParams common_object_request_params = 10;
 }
 
+// Message for canceling an in-progress resumable upload.
+// `upload_id` **must** be set.
+message CancelResumableWriteRequest {
+  // Required. The upload_id of the resumable upload to cancel. This should be copied
+  // from the `upload_id` field of `StartResumableWriteResponse`.
+  string upload_id = 1 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Empty response message for canceling an in-progress resumable upload, will be
+// extended as needed.
+message CancelResumableWriteResponse {
+
+}
+
 // Request message for ReadObject.
 message ReadObjectRequest {
   // The name of the bucket containing the object to read.
@@ -772,6 +937,17 @@ message WriteObjectSpec {
   // Makes the operation conditional on whether the object's current
   // metageneration does not match the given value.
   optional int64 if_metageneration_not_match = 6;
+
+  // The expected final object size being uploaded.
+  // If this value is set, closing the stream after writing fewer or more than
+  // `object_size` bytes will result in an OUT_OF_RANGE error.
+  //
+  // This situation is considered a client error, and if such an error occurs
+  // you must start the upload over from scratch, this time sending the correct
+  // number of bytes.
+  //
+  // The `object_size` value is ignored for one-shot (non-resumable) writes.
+  optional int64 object_size = 8;
 }
 
 // Request message for WriteObject.
@@ -937,16 +1113,16 @@ message QueryWriteStatusResponse {
 // encryption_key_sha256_bytes fields of the
 // common_object_request_params.customer_encryption field.
 message RewriteObjectRequest {
-  // Immutable. The name of the destination object. Nearly any sequence of unicode
-  // characters is valid. See
-  // [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+  // Immutable. The name of the destination object.
+  // See the
+  // [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
   // Example: `test.txt`
   // The `name` field by itself does not uniquely identify a Cloud Storage
   // object. A Cloud Storage object is uniquely identified by the tuple of
   // (bucket, object, generation).
   string destination_name = 24 [(google.api.field_behavior) = IMMUTABLE];
 
-  // Immutable. The name of the bucket containing The name of the destination object.
+  // Immutable. The name of the bucket containing the destination object.
   string destination_bucket = 25 [
     (google.api.field_behavior) = IMMUTABLE,
     (google.api.resource_reference) = {
@@ -1147,7 +1323,8 @@ message UpdateObjectRequest {
 
 // Request message for GetServiceAccount.
 message GetServiceAccountRequest {
-  // Required. Project ID.
+  // Required. Project ID, in the format of "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 1 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.resource_reference) = {
@@ -1158,7 +1335,9 @@ message GetServiceAccountRequest {
 
 // Request message for CreateHmacKey.
 message CreateHmacKeyRequest {
-  // Required. The project that the HMAC-owning service account lives in.
+  // Required. The project that the HMAC-owning service account lives in, in the format of
+  // "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 1 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.resource_reference) = {
@@ -1185,7 +1364,9 @@ message DeleteHmacKeyRequest {
   // Required. The identifying key for the HMAC to delete.
   string access_id = 1 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. The project id the HMAC key lies in.
+  // Required. The project that owns the HMAC key, in the format of
+  // "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 2 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.resource_reference) = {
@@ -1199,7 +1380,9 @@ message GetHmacKeyRequest {
   // Required. The identifying key for the HMAC to delete.
   string access_id = 1 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. The project id the HMAC key lies in.
+  // Required. The project the HMAC key lies in, in the format of
+  // "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 2 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.resource_reference) = {
@@ -1210,7 +1393,9 @@ message GetHmacKeyRequest {
 
 // Request to fetch a list of HMAC keys under a given project.
 message ListHmacKeysRequest {
-  // Required. The project id to list HMAC keys for.
+  // Required. The project to list HMAC keys for, in the format of
+  // "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 1 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.resource_reference) = {
@@ -1242,6 +1427,9 @@ message ListHmacKeysResponse {
 }
 
 // Request object to update an HMAC key state.
+// HmacKeyMetadata.state is required and the only writable field in
+// UpdateHmacKey operation. Specifying fields other than state will result in an
+// error.
 message UpdateHmacKeyRequest {
   // Required. The HMAC key to update.
   // If present, the hmac_key's `id` field will be used to identify the key.
@@ -1250,6 +1438,8 @@ message UpdateHmacKeyRequest {
   HmacKeyMetadata hmac_key = 1 [(google.api.field_behavior) = REQUIRED];
 
   // Update mask for hmac_key.
+  // Not specifying any fields will mean only the `state` field is updated to
+  // the value specified in `hmac_key`.
   google.protobuf.FieldMask update_mask = 3;
 }
 
@@ -1595,7 +1785,9 @@ message Bucket {
   // only be performed if the etag matches that of the bucket.
   string etag = 29;
 
-  // Immutable. The project which owns this bucket.
+  // Immutable. The project which owns this bucket, in the format of
+  // "projects/<projectIdentifier>".
+  // <projectIdentifier> can be the project ID or project number.
   string project = 3 [
     (google.api.field_behavior) = IMMUTABLE,
     (google.api.resource_reference) = {
@@ -1803,28 +1995,36 @@ message ObjectChecksums {
 
 // Hmac Key Metadata, which includes all information other than the secret.
 message HmacKeyMetadata {
-  // Resource name ID of the key in the format <projectId>/<accessId>.
-  string id = 1;
+  // Immutable. Resource name ID of the key in the format
+  // <projectIdentifier>/<accessId>.
+  // <projectIdentifier> can be the project ID or project number.
+  string id = 1 [(google.api.field_behavior) = IMMUTABLE];
 
-  // Globally unique id for keys.
-  string access_id = 2;
+  // Immutable. Globally unique id for keys.
+  string access_id = 2 [(google.api.field_behavior) = IMMUTABLE];
 
-  // The project ID that the hmac key is contained in.
-  string project = 3 [(google.api.resource_reference) = {
-                        type: "cloudresourcemanager.googleapis.com/Project"
-                      }];
+  // Immutable. Identifies the project that owns the service account of the specified HMAC
+  // key, in the format "projects/<projectIdentifier>". <projectIdentifier> can
+  // be the project ID or project number.
+  string project = 3 [
+    (google.api.field_behavior) = IMMUTABLE,
+    (google.api.resource_reference) = {
+      type: "cloudresourcemanager.googleapis.com/Project"
+    }
+  ];
 
-  // Email of the service account the key authenticates as.
-  string service_account_email = 4;
+  // Output only. Email of the service account the key authenticates as.
+  string service_account_email = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // State of the key. One of ACTIVE, INACTIVE, or DELETED.
+  // Writable, can be updated by UpdateHmacKey operation.
   string state = 5;
 
-  // The creation time of the HMAC key.
-  google.protobuf.Timestamp create_time = 6;
+  // Output only. The creation time of the HMAC key.
+  google.protobuf.Timestamp create_time = 6 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // The last modification time of the HMAC key metadata.
-  google.protobuf.Timestamp update_time = 7;
+  // Output only. The last modification time of the HMAC key metadata.
+  google.protobuf.Timestamp update_time = 7 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The etag of the HMAC key.
   string etag = 8;
@@ -1976,6 +2176,11 @@ message Object {
   ObjectChecksums checksums = 16 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The modification time of the object metadata.
+  // Set initially to object creation time and then updated whenever any
+  // metadata of the object changes. This includes changes made by a requester,
+  // such as modifying custom metadata, as well as changes made by Cloud Storage
+  // on behalf of a requester, such as changing the storage class based on an
+  // Object Lifecycle Configuration.
   // Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
   google.protobuf.Timestamp update_time = 17 [(google.api.field_behavior) = OUTPUT_ONLY];