From 31c1b18acc3c118e39eb613a82ee292f3e246b8f Mon Sep 17 00:00:00 2001
From: "gcf-owl-bot[bot]" <78513119+gcf-owl-bot[bot]@users.noreply.github.com>
Date: Mon, 5 Dec 2022 18:00:03 -0500
Subject: [PATCH] feat: add
 {Compose,Rewrite,StartResumableWrite}Request.object_checksums and
 Bucket.RetentionPolicy.retention_duration (#1790)

* ComposeObjectRequest.object_checksums
  * provide checksum validation values for ComposeObject operations
* RewriteObjectRequest.object_checksums
  * provide checksum validation values for RewriteObject operations
* StartResumableWriteRequest.object_checksums
  * provide checksum validation values when starting a ResumableWrite session
* Bucket.RetentionPolicy.retention_duration
  * Add new retention_duration field that is explicitly a Duration superseding retention_period which is an int64 of seconds.


docs: Clarified the object can be deleted via DeleteObject

docs: Clarified relative resource names in gRPC IAM RPCs

feat: Added object_checksums for compose/rewrite/startResumableWrite request

docs: Updated the document link for `Naming Guidelines`

fix: Removed WriteObject routing annotations

feat: Added a new retention_duration field of Duration type
PiperOrigin-RevId: 492231039

Source-Link: https://github.com/googleapis/googleapis/commit/82a7568a886973f7f0b6a47c35e3b73b03a87fb7

Source-Link: https://github.com/googleapis/googleapis-gen/commit/2ecf909ca662ba304842ce6d041e92920be1e9b8
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMmVjZjkwOWNhNjYyYmEzMDQ4NDJjZTZkMDQxZTkyOTIwYmUxZTliOCJ9

Co-authored-by: BenWhitehead <BenWhitehead@users.noreply.github.com>
---
 .../com/google/storage/v2/StorageClient.java  |   60 +-
 .../storage/v2/stub/GrpcStorageStub.java      |   17 -
 .../google/storage/v2/StorageClientTest.java  |    9 +
 .../com/google/storage/v2/StorageGrpc.java    |   36 +
 .../clirr-ignored-differences.xml             |   12 +
 .../java/com/google/storage/v2/Bucket.java    |  784 +++++++++---
 .../storage/v2/BucketAccessControl.java       |   28 +-
 .../v2/BucketAccessControlOrBuilder.java      |    8 +-
 .../google/storage/v2/BucketOrBuilder.java    |   57 +-
 .../v2/CancelResumableWriteRequest.java       |   28 +-
 .../CancelResumableWriteRequestOrBuilder.java |    8 +-
 .../storage/v2/ComposeObjectRequest.java      |  316 ++++-
 .../v2/ComposeObjectRequestOrBuilder.java     |   38 +
 .../storage/v2/CreateBucketRequest.java       |   42 +-
 .../v2/CreateBucketRequestOrBuilder.java      |   12 +-
 .../storage/v2/CreateHmacKeyRequest.java      |   42 +-
 .../v2/CreateHmacKeyRequestOrBuilder.java     |   12 +-
 .../storage/v2/DeleteObjectRequest.java       |   28 +-
 .../v2/DeleteObjectRequestOrBuilder.java      |    8 +-
 .../google/storage/v2/HmacKeyMetadata.java    |   42 +-
 .../storage/v2/HmacKeyMetadataOrBuilder.java  |   12 +-
 .../google/storage/v2/ListObjectsRequest.java |  126 +-
 .../v2/ListObjectsRequestOrBuilder.java       |   36 +-
 .../v2/LockBucketRetentionPolicyRequest.java  |   16 +-
 ...BucketRetentionPolicyRequestOrBuilder.java |    4 +-
 .../com/google/storage/v2/Notification.java   |   21 +-
 .../storage/v2/NotificationOrBuilder.java     |    6 +-
 .../java/com/google/storage/v2/Object.java    |  376 +++---
 .../storage/v2/ObjectAccessControl.java       |   28 +-
 .../v2/ObjectAccessControlOrBuilder.java      |    8 +-
 .../google/storage/v2/ObjectOrBuilder.java    |   94 +-
 .../storage/v2/QueryWriteStatusRequest.java   |   28 +-
 .../v2/QueryWriteStatusRequestOrBuilder.java  |    8 +-
 .../storage/v2/RewriteObjectRequest.java      |  315 ++++-
 .../v2/RewriteObjectRequestOrBuilder.java     |   48 +-
 .../v2/StartResumableWriteRequest.java        |  340 +++++-
 .../StartResumableWriteRequestOrBuilder.java  |   53 +-
 .../com/google/storage/v2/StorageProto.java   | 1063 +++++++++--------
 .../google/storage/v2/WriteObjectRequest.java |   16 +-
 .../v2/WriteObjectRequestOrBuilder.java       |    4 +-
 .../proto/google/storage/v2/storage.proto     |  416 +++----
 41 files changed, 3060 insertions(+), 1545 deletions(-)

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 636c1ce82..51b7167e1 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
@@ -829,7 +829,9 @@ public final Bucket lockBucketRetentionPolicy(LockBucketRetentionPolicyRequest r
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket or object.
+   * Gets the IAM policy for a specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -860,7 +862,9 @@ public final Policy getIamPolicy(ResourceName resource) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket or object.
+   * Gets the IAM policy for a specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -888,7 +892,9 @@ public final Policy getIamPolicy(String resource) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket or object.
+   * Gets the IAM policy for a specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -919,7 +925,9 @@ public final Policy getIamPolicy(GetIamPolicyRequest request) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Gets the IAM policy for a specified bucket or object.
+   * Gets the IAM policy for a specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -949,7 +957,9 @@ public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket or object.
+   * Updates an IAM policy for the specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -985,7 +995,9 @@ public final Policy setIamPolicy(ResourceName resource, Policy policy) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket or object.
+   * Updates an IAM policy for the specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -1018,7 +1030,9 @@ public final Policy setIamPolicy(String resource, Policy policy) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket or object.
+   * Updates an IAM policy for the specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -1050,7 +1064,9 @@ public final Policy setIamPolicy(SetIamPolicyRequest request) {
 
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
-   * Updates an IAM policy for the specified bucket or object.
+   * Updates an IAM policy for the specified bucket or object. The `resource` field in the request
+   * should be projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+   * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
    *
    * <p>Sample code:
    *
@@ -1082,7 +1098,9 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
-   * caller.
+   * caller. The `resource` field in the request should be projects/_/buckets/&lt;bucket_name&gt;
+   * for a bucket or projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an
+   * object.
    *
    * <p>Sample code:
    *
@@ -1120,7 +1138,9 @@ public final TestIamPermissionsResponse testIamPermissions(
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
-   * caller.
+   * caller. The `resource` field in the request should be projects/_/buckets/&lt;bucket_name&gt;
+   * for a bucket or projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an
+   * object.
    *
    * <p>Sample code:
    *
@@ -1158,7 +1178,9 @@ public final TestIamPermissionsResponse testIamPermissions(
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
-   * caller.
+   * caller. The `resource` field in the request should be projects/_/buckets/&lt;bucket_name&gt;
+   * for a bucket or projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an
+   * object.
    *
    * <p>Sample code:
    *
@@ -1190,7 +1212,9 @@ public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsReq
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Tests a set of permissions on the given bucket or object to see which, if any, are held by the
-   * caller.
+   * caller. The `resource` field in the request should be projects/_/buckets/&lt;bucket_name&gt;
+   * for a bucket or projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an
+   * object.
    *
    * <p>Sample code:
    *
@@ -1861,6 +1885,7 @@ public final ListNotificationsPagedResponse listNotifications(ListNotificationsR
    *               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
    *                   .toString())
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   Object response = storageClient.composeObject(request);
    * }
@@ -1897,6 +1922,7 @@ public final Object composeObject(ComposeObjectRequest request) {
    *               CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
    *                   .toString())
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   ApiFuture<Object> future = storageClient.composeObjectCallable().futureCall(request);
    *   // Do something.
@@ -1929,7 +1955,8 @@ public final UnaryCallable<ComposeObjectRequest, Object> composeObjectCallable()
    * }</pre>
    *
    * @param bucket Required. Name of the bucket in which the object resides.
-   * @param object Required. The name of the object to delete (when not using a resumable write).
+   * @param object Required. The name of the finalized object to delete. Note: If you want to delete
+   *     an unfinalized resumable upload please use `CancelResumableWrite`.
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final void deleteObject(String bucket, String object) {
@@ -1960,7 +1987,8 @@ public final void deleteObject(String bucket, String object) {
    * }</pre>
    *
    * @param bucket Required. Name of the bucket in which the object resides.
-   * @param object Required. The name of the object to delete (when not using a resumable write).
+   * @param object Required. The name of the finalized object to delete. Note: If you want to delete
+   *     an unfinalized resumable upload please use `CancelResumableWrite`.
    * @param generation If present, permanently deletes a specific revision of this object (as
    *     opposed to the latest version, the default).
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
@@ -2717,6 +2745,7 @@ public final UnaryCallable<ListObjectsRequest, ListObjectsResponse> listObjectsC
    *           .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
    *           .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   RewriteResponse response = storageClient.rewriteObject(request);
    * }
@@ -2768,6 +2797,7 @@ public final RewriteResponse rewriteObject(RewriteObjectRequest request) {
    *           .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
    *           .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   ApiFuture<RewriteResponse> future = storageClient.rewriteObjectCallable().futureCall(request);
    *   // Do something.
@@ -2797,6 +2827,7 @@ public final UnaryCallable<RewriteObjectRequest, RewriteResponse> rewriteObjectC
    *       StartResumableWriteRequest.newBuilder()
    *           .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   StartResumableWriteResponse response = storageClient.startResumableWrite(request);
    * }
@@ -2827,6 +2858,7 @@ public final StartResumableWriteResponse startResumableWrite(StartResumableWrite
    *       StartResumableWriteRequest.newBuilder()
    *           .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
    *           .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+   *           .setObjectChecksums(ObjectChecksums.newBuilder().build())
    *           .build();
    *   ApiFuture<StartResumableWriteResponse> future =
    *       storageClient.startResumableWriteCallable().futureCall(request);
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 cd33ebcaf..2b568627a 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
@@ -471,10 +471,6 @@ public class GrpcStorageStub extends StorageStub {
       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 =
@@ -751,19 +747,6 @@ protected GrpcStorageStub(
     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()
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 b4a7c6ddf..9f1c7c9aa 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
@@ -1368,6 +1368,7 @@ public void composeObjectTest() throws Exception {
                 CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                     .toString())
             .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+            .setObjectChecksums(ObjectChecksums.newBuilder().build())
             .build();
 
     Object actualResponse = client.composeObject(request);
@@ -1387,6 +1388,7 @@ public void composeObjectTest() throws Exception {
     Assert.assertEquals(request.getKmsKey(), actualRequest.getKmsKey());
     Assert.assertEquals(
         request.getCommonObjectRequestParams(), actualRequest.getCommonObjectRequestParams());
+    Assert.assertEquals(request.getObjectChecksums(), actualRequest.getObjectChecksums());
     Assert.assertTrue(
         channelProvider.isHeaderSent(
             ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
@@ -1410,6 +1412,7 @@ public void composeObjectExceptionTest() throws Exception {
                   CryptoKeyName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]")
                       .toString())
               .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+              .setObjectChecksums(ObjectChecksums.newBuilder().build())
               .build();
       client.composeObject(request);
       Assert.fail("No exception raised");
@@ -1997,6 +2000,7 @@ public void rewriteObjectTest() throws Exception {
             .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
             .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
             .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+            .setObjectChecksums(ObjectChecksums.newBuilder().build())
             .build();
 
     RewriteResponse actualResponse = client.rewriteObject(request);
@@ -2043,6 +2047,7 @@ public void rewriteObjectTest() throws Exception {
         actualRequest.getCopySourceEncryptionKeySha256Bytes());
     Assert.assertEquals(
         request.getCommonObjectRequestParams(), actualRequest.getCommonObjectRequestParams());
+    Assert.assertEquals(request.getObjectChecksums(), actualRequest.getObjectChecksums());
     Assert.assertTrue(
         channelProvider.isHeaderSent(
             ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
@@ -2081,6 +2086,7 @@ public void rewriteObjectExceptionTest() throws Exception {
               .setCopySourceEncryptionKeyBytes(ByteString.EMPTY)
               .setCopySourceEncryptionKeySha256Bytes(ByteString.EMPTY)
               .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+              .setObjectChecksums(ObjectChecksums.newBuilder().build())
               .build();
       client.rewriteObject(request);
       Assert.fail("No exception raised");
@@ -2099,6 +2105,7 @@ public void startResumableWriteTest() throws Exception {
         StartResumableWriteRequest.newBuilder()
             .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
             .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+            .setObjectChecksums(ObjectChecksums.newBuilder().build())
             .build();
 
     StartResumableWriteResponse actualResponse = client.startResumableWrite(request);
@@ -2111,6 +2118,7 @@ public void startResumableWriteTest() throws Exception {
     Assert.assertEquals(request.getWriteObjectSpec(), actualRequest.getWriteObjectSpec());
     Assert.assertEquals(
         request.getCommonObjectRequestParams(), actualRequest.getCommonObjectRequestParams());
+    Assert.assertEquals(request.getObjectChecksums(), actualRequest.getObjectChecksums());
     Assert.assertTrue(
         channelProvider.isHeaderSent(
             ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
@@ -2127,6 +2135,7 @@ public void startResumableWriteExceptionTest() throws Exception {
           StartResumableWriteRequest.newBuilder()
               .setWriteObjectSpec(WriteObjectSpec.newBuilder().build())
               .setCommonObjectRequestParams(CommonObjectRequestParams.newBuilder().build())
+              .setObjectChecksums(ObjectChecksums.newBuilder().build())
               .build();
       client.startResumableWrite(request);
       Assert.fail("No exception raised");
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 74422ea15..d55f766cd 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
@@ -1430,6 +1430,9 @@ public void lockBucketRetentionPolicy(
      *
      * <pre>
      * Gets the IAM policy for a specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void getIamPolicy(
@@ -1444,6 +1447,9 @@ public void getIamPolicy(
      *
      * <pre>
      * Updates an IAM policy for the specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void setIamPolicy(
@@ -1459,6 +1465,9 @@ public void setIamPolicy(
      * <pre>
      * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void testIamPermissions(
@@ -2152,6 +2161,9 @@ public void lockBucketRetentionPolicy(
      *
      * <pre>
      * Gets the IAM policy for a specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void getIamPolicy(
@@ -2168,6 +2180,9 @@ public void getIamPolicy(
      *
      * <pre>
      * Updates an IAM policy for the specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void setIamPolicy(
@@ -2185,6 +2200,9 @@ public void setIamPolicy(
      * <pre>
      * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public void testIamPermissions(
@@ -2715,6 +2733,9 @@ public com.google.storage.v2.Bucket lockBucketRetentionPolicy(
      *
      * <pre>
      * Gets the IAM policy for a specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request) {
@@ -2727,6 +2748,9 @@ public com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyReque
      *
      * <pre>
      * Updates an IAM policy for the specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request) {
@@ -2740,6 +2764,9 @@ public com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyReque
      * <pre>
      * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.iam.v1.TestIamPermissionsResponse testIamPermissions(
@@ -3146,6 +3173,9 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      * <pre>
      * Gets the IAM policy for a specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
@@ -3159,6 +3189,9 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      *
      * <pre>
      * Updates an IAM policy for the specified bucket or object.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<com.google.iam.v1.Policy>
@@ -3173,6 +3206,9 @@ protected StorageFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions c
      * <pre>
      * Tests a set of permissions on the given bucket or object to see which, if
      * any, are held by the caller.
+     * The `resource` field in the request should be
+     * projects/_/buckets/&lt;bucket_name&gt; for a bucket or
+     * projects/_/buckets/&lt;bucket_name&gt;/objects/&lt;object_name&gt; for an object.
      * </pre>
      */
     public com.google.common.util.concurrent.ListenableFuture<
diff --git a/proto-google-cloud-storage-v2/clirr-ignored-differences.xml b/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
index 70e35c153..41c35b797 100644
--- a/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
+++ b/proto-google-cloud-storage-v2/clirr-ignored-differences.xml
@@ -1,5 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
 <differences>
+  <!-- Allow addition of new Bucket.RetentionPolicy.retention_duration field -->
+  <difference>
+    <differenceType>7012</differenceType>
+    <className>com/google/storage/v2/*</className>
+    <method>* *RetentionDuration*(*)</method>
+  </difference>
+  <!-- Allow addition of new object_checksums to ComposeObjectRequest, RewriteObjectRequest, StartResumableWriteRequest -->
+  <difference>
+    <differenceType>7012</differenceType>
+    <className>com/google/storage/v2/*</className>
+    <method>* *ObjectChecksums*(*)</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 5ce2c9075..b15e081b7 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
@@ -3014,8 +3014,9 @@ public interface UniformBucketLevelAccessOrBuilder
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3028,8 +3029,9 @@ public interface UniformBucketLevelAccessOrBuilder
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3042,8 +3044,9 @@ public interface UniformBucketLevelAccessOrBuilder
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3124,8 +3127,9 @@ public boolean getEnabled() {
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3141,8 +3145,9 @@ public boolean hasLockTime() {
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3158,8 +3163,9 @@ public com.google.protobuf.Timestamp getLockTime() {
        *
        * <pre>
        * The deadline time for changing
-       * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-       * Mutable until the specified deadline is reached, but not afterward.
+       * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+       * `false`. Mutable until the specified deadline is reached, but not
+       * afterward.
        * </pre>
        *
        * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3609,8 +3615,9 @@ public Builder clearEnabled() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3625,8 +3632,9 @@ public boolean hasLockTime() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3647,8 +3655,9 @@ public com.google.protobuf.Timestamp getLockTime() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3671,8 +3680,9 @@ public Builder setLockTime(com.google.protobuf.Timestamp value) {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3692,8 +3702,9 @@ public Builder setLockTime(com.google.protobuf.Timestamp.Builder builderForValue
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3720,8 +3731,9 @@ public Builder mergeLockTime(com.google.protobuf.Timestamp value) {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3742,8 +3754,9 @@ public Builder clearLockTime() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3758,8 +3771,9 @@ public com.google.protobuf.Timestamp.Builder getLockTimeBuilder() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -3778,8 +3792,9 @@ public com.google.protobuf.TimestampOrBuilder getLockTimeOrBuilder() {
          *
          * <pre>
          * The deadline time for changing
-         * `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-         * Mutable until the specified deadline is reached, but not afterward.
+         * `iam_config.uniform_bucket_level_access.enabled` from `true` to
+         * `false`. Mutable until the specified deadline is reached, but not
+         * afterward.
          * </pre>
          *
          * <code>.google.protobuf.Timestamp lock_time = 2;</code>
@@ -11877,6 +11892,53 @@ public interface RetentionPolicyOrBuilder
      * @return The retentionPeriod.
      */
     long getRetentionPeriod();
+
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     *
+     * @return Whether the retentionDuration field is set.
+     */
+    boolean hasRetentionDuration();
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     *
+     * @return The retentionDuration.
+     */
+    com.google.protobuf.Duration getRetentionDuration();
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     */
+    com.google.protobuf.DurationOrBuilder getRetentionDurationOrBuilder();
   }
   /**
    *
@@ -12034,6 +12096,66 @@ public long getRetentionPeriod() {
       return retentionPeriod_;
     }
 
+    public static final int RETENTION_DURATION_FIELD_NUMBER = 4;
+    private com.google.protobuf.Duration retentionDuration_;
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     *
+     * @return Whether the retentionDuration field is set.
+     */
+    @java.lang.Override
+    public boolean hasRetentionDuration() {
+      return retentionDuration_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     *
+     * @return The retentionDuration.
+     */
+    @java.lang.Override
+    public com.google.protobuf.Duration getRetentionDuration() {
+      return retentionDuration_ == null
+          ? com.google.protobuf.Duration.getDefaultInstance()
+          : retentionDuration_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The duration that objects need to be retained. Retention duration must be
+     * greater than zero and less than 100 years. Note that enforcement of
+     * retention periods less than a day is not guaranteed. Such periods should
+     * only be used for testing purposes. Any `nanos` value specified will be
+     * rounded down to the nearest second.
+     * </pre>
+     *
+     * <code>.google.protobuf.Duration retention_duration = 4;</code>
+     */
+    @java.lang.Override
+    public com.google.protobuf.DurationOrBuilder getRetentionDurationOrBuilder() {
+      return getRetentionDuration();
+    }
+
     private byte memoizedIsInitialized = -1;
 
     @java.lang.Override
@@ -12057,6 +12179,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       if (((bitField0_ & 0x00000001) != 0)) {
         output.writeInt64(3, retentionPeriod_);
       }
+      if (retentionDuration_ != null) {
+        output.writeMessage(4, getRetentionDuration());
+      }
       getUnknownFields().writeTo(output);
     }
 
@@ -12075,6 +12200,9 @@ public int getSerializedSize() {
       if (((bitField0_ & 0x00000001) != 0)) {
         size += com.google.protobuf.CodedOutputStream.computeInt64Size(3, retentionPeriod_);
       }
+      if (retentionDuration_ != null) {
+        size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getRetentionDuration());
+      }
       size += getUnknownFields().getSerializedSize();
       memoizedSize = size;
       return size;
@@ -12100,6 +12228,10 @@ public boolean equals(final java.lang.Object obj) {
       if (hasRetentionPeriod()) {
         if (getRetentionPeriod() != other.getRetentionPeriod()) return false;
       }
+      if (hasRetentionDuration() != other.hasRetentionDuration()) return false;
+      if (hasRetentionDuration()) {
+        if (!getRetentionDuration().equals(other.getRetentionDuration())) return false;
+      }
       if (!getUnknownFields().equals(other.getUnknownFields())) return false;
       return true;
     }
@@ -12121,6 +12253,10 @@ public int hashCode() {
         hash = (37 * hash) + RETENTION_PERIOD_FIELD_NUMBER;
         hash = (53 * hash) + com.google.protobuf.Internal.hashLong(getRetentionPeriod());
       }
+      if (hasRetentionDuration()) {
+        hash = (37 * hash) + RETENTION_DURATION_FIELD_NUMBER;
+        hash = (53 * hash) + getRetentionDuration().hashCode();
+      }
       hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -12271,6 +12407,12 @@ public Builder clear() {
 
         retentionPeriod_ = 0L;
         bitField0_ = (bitField0_ & ~0x00000001);
+        if (retentionDurationBuilder_ == null) {
+          retentionDuration_ = null;
+        } else {
+          retentionDuration_ = null;
+          retentionDurationBuilder_ = null;
+        }
         return this;
       }
 
@@ -12310,6 +12452,11 @@ public com.google.storage.v2.Bucket.RetentionPolicy buildPartial() {
           result.retentionPeriod_ = retentionPeriod_;
           to_bitField0_ |= 0x00000001;
         }
+        if (retentionDurationBuilder_ == null) {
+          result.retentionDuration_ = retentionDuration_;
+        } else {
+          result.retentionDuration_ = retentionDurationBuilder_.build();
+        }
         result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
@@ -12371,6 +12518,9 @@ public Builder mergeFrom(com.google.storage.v2.Bucket.RetentionPolicy other) {
         if (other.hasRetentionPeriod()) {
           setRetentionPeriod(other.getRetentionPeriod());
         }
+        if (other.hasRetentionDuration()) {
+          mergeRetentionDuration(other.getRetentionDuration());
+        }
         this.mergeUnknownFields(other.getUnknownFields());
         onChanged();
         return this;
@@ -12415,6 +12565,13 @@ public Builder mergeFrom(
                   bitField0_ |= 0x00000001;
                   break;
                 } // case 24
+              case 34:
+                {
+                  input.readMessage(
+                      getRetentionDurationFieldBuilder().getBuilder(), extensionRegistry);
+
+                  break;
+                } // case 34
               default:
                 {
                   if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -12759,6 +12916,227 @@ public Builder clearRetentionPeriod() {
         return this;
       }
 
+      private com.google.protobuf.Duration retentionDuration_;
+      private com.google.protobuf.SingleFieldBuilderV3<
+              com.google.protobuf.Duration,
+              com.google.protobuf.Duration.Builder,
+              com.google.protobuf.DurationOrBuilder>
+          retentionDurationBuilder_;
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       *
+       * @return Whether the retentionDuration field is set.
+       */
+      public boolean hasRetentionDuration() {
+        return retentionDurationBuilder_ != null || retentionDuration_ != null;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       *
+       * @return The retentionDuration.
+       */
+      public com.google.protobuf.Duration getRetentionDuration() {
+        if (retentionDurationBuilder_ == null) {
+          return retentionDuration_ == null
+              ? com.google.protobuf.Duration.getDefaultInstance()
+              : retentionDuration_;
+        } else {
+          return retentionDurationBuilder_.getMessage();
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public Builder setRetentionDuration(com.google.protobuf.Duration value) {
+        if (retentionDurationBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          retentionDuration_ = value;
+          onChanged();
+        } else {
+          retentionDurationBuilder_.setMessage(value);
+        }
+
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public Builder setRetentionDuration(com.google.protobuf.Duration.Builder builderForValue) {
+        if (retentionDurationBuilder_ == null) {
+          retentionDuration_ = builderForValue.build();
+          onChanged();
+        } else {
+          retentionDurationBuilder_.setMessage(builderForValue.build());
+        }
+
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public Builder mergeRetentionDuration(com.google.protobuf.Duration value) {
+        if (retentionDurationBuilder_ == null) {
+          if (retentionDuration_ != null) {
+            retentionDuration_ =
+                com.google.protobuf.Duration.newBuilder(retentionDuration_)
+                    .mergeFrom(value)
+                    .buildPartial();
+          } else {
+            retentionDuration_ = value;
+          }
+          onChanged();
+        } else {
+          retentionDurationBuilder_.mergeFrom(value);
+        }
+
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public Builder clearRetentionDuration() {
+        if (retentionDurationBuilder_ == null) {
+          retentionDuration_ = null;
+          onChanged();
+        } else {
+          retentionDuration_ = null;
+          retentionDurationBuilder_ = null;
+        }
+
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public com.google.protobuf.Duration.Builder getRetentionDurationBuilder() {
+
+        onChanged();
+        return getRetentionDurationFieldBuilder().getBuilder();
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      public com.google.protobuf.DurationOrBuilder getRetentionDurationOrBuilder() {
+        if (retentionDurationBuilder_ != null) {
+          return retentionDurationBuilder_.getMessageOrBuilder();
+        } else {
+          return retentionDuration_ == null
+              ? com.google.protobuf.Duration.getDefaultInstance()
+              : retentionDuration_;
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * The duration that objects need to be retained. Retention duration must be
+       * greater than zero and less than 100 years. Note that enforcement of
+       * retention periods less than a day is not guaranteed. Such periods should
+       * only be used for testing purposes. Any `nanos` value specified will be
+       * rounded down to the nearest second.
+       * </pre>
+       *
+       * <code>.google.protobuf.Duration retention_duration = 4;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilderV3<
+              com.google.protobuf.Duration,
+              com.google.protobuf.Duration.Builder,
+              com.google.protobuf.DurationOrBuilder>
+          getRetentionDurationFieldBuilder() {
+        if (retentionDurationBuilder_ == null) {
+          retentionDurationBuilder_ =
+              new com.google.protobuf.SingleFieldBuilderV3<
+                  com.google.protobuf.Duration,
+                  com.google.protobuf.Duration.Builder,
+                  com.google.protobuf.DurationOrBuilder>(
+                  getRetentionDuration(), getParentForChildren(), isClean());
+          retentionDuration_ = null;
+        }
+        return retentionDurationBuilder_;
+      }
+
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -15036,10 +15414,10 @@ public interface AutoclassOrBuilder
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15053,10 +15431,10 @@ public interface AutoclassOrBuilder
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15070,10 +15448,10 @@ public interface AutoclassOrBuilder
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15153,10 +15531,10 @@ public boolean getEnabled() {
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15173,10 +15551,10 @@ public boolean hasToggleTime() {
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15193,10 +15571,10 @@ public com.google.protobuf.Timestamp getToggleTime() {
      *
      *
      * <pre>
-     * Output only. Latest instant at which the `enabled` field was set to true after being
-     * disabled/unconfigured or set to false after being enabled. If Autoclass
-     * is enabled when the bucket is created, the toggle_time is set to the
-     * bucket creation time.
+     * Output only. Latest instant at which the `enabled` field was set to true
+     * after being disabled/unconfigured or set to false after being enabled. If
+     * Autoclass is enabled when the bucket is created, the toggle_time is set
+     * to the bucket creation time.
      * </pre>
      *
      * <code>
@@ -15635,10 +16013,10 @@ public Builder clearEnabled() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15654,10 +16032,10 @@ public boolean hasToggleTime() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15679,10 +16057,10 @@ public com.google.protobuf.Timestamp getToggleTime() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15706,10 +16084,10 @@ public Builder setToggleTime(com.google.protobuf.Timestamp value) {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15730,10 +16108,10 @@ public Builder setToggleTime(com.google.protobuf.Timestamp.Builder builderForVal
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15761,10 +16139,10 @@ public Builder mergeToggleTime(com.google.protobuf.Timestamp value) {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15786,10 +16164,10 @@ public Builder clearToggleTime() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15805,10 +16183,10 @@ public com.google.protobuf.Timestamp.Builder getToggleTimeBuilder() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15828,10 +16206,10 @@ public com.google.protobuf.TimestampOrBuilder getToggleTimeOrBuilder() {
        *
        *
        * <pre>
-       * Output only. Latest instant at which the `enabled` field was set to true after being
-       * disabled/unconfigured or set to false after being enabled. If Autoclass
-       * is enabled when the bucket is created, the toggle_time is set to the
-       * bucket creation time.
+       * Output only. Latest instant at which the `enabled` field was set to true
+       * after being disabled/unconfigured or set to false after being enabled. If
+       * Autoclass is enabled when the bucket is created, the toggle_time is set
+       * to the bucket creation time.
        * </pre>
        *
        * <code>
@@ -15974,9 +16352,9 @@ public com.google.protobuf.ByteString getNameBytes() {
    *
    *
    * <pre>
-   * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-   * `name` field. For globally unique buckets, this is equal to the "bucket
-   * name" of other Cloud Storage APIs. Example: "pub".
+   * Output only. The user-chosen part of the bucket name. The `{bucket}`
+   * portion of the `name` field. For globally unique buckets, this is equal to
+   * the "bucket name" of other Cloud Storage APIs. Example: "pub".
    * </pre>
    *
    * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -15999,9 +16377,9 @@ public java.lang.String getBucketId() {
    *
    *
    * <pre>
-   * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-   * `name` field. For globally unique buckets, this is equal to the "bucket
-   * name" of other Cloud Storage APIs. Example: "pub".
+   * Output only. The user-chosen part of the bucket name. The `{bucket}`
+   * portion of the `name` field. For globally unique buckets, this is equal to
+   * the "bucket name" of other Cloud Storage APIs. Example: "pub".
    * </pre>
    *
    * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -16157,8 +16535,9 @@ public long getMetageneration() {
    *
    *
    * <pre>
-   * Immutable. The location of the bucket. Object data for objects in the bucket resides
-   * in physical storage within this region.  Defaults to `US`. See the
+   * Immutable. The location of the bucket. Object data for objects in the
+   * bucket resides in physical storage within this region.  Defaults to `US`.
+   * See the
    * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
    * guide] for the authoritative list. Attempting to update this field after
    * the bucket is created will result in an error.
@@ -16184,8 +16563,9 @@ public java.lang.String getLocation() {
    *
    *
    * <pre>
-   * Immutable. The location of the bucket. Object data for objects in the bucket resides
-   * in physical storage within this region.  Defaults to `US`. See the
+   * Immutable. The location of the bucket. Object data for objects in the
+   * bucket resides in physical storage within this region.  Defaults to `US`.
+   * See the
    * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
    * guide] for the authoritative list. Attempting to update this field after
    * the bucket is created will result in an error.
@@ -16214,7 +16594,8 @@ public com.google.protobuf.ByteString getLocationBytes() {
    *
    *
    * <pre>
-   * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+   * Output only. The location type of the bucket (region, dual-region,
+   * multi-region, etc).
    * </pre>
    *
    * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -16237,7 +16618,8 @@ public java.lang.String getLocationType() {
    *
    *
    * <pre>
-   * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+   * Output only. The location type of the bucket (region, dual-region,
+   * multi-region, etc).
    * </pre>
    *
    * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -16382,7 +16764,7 @@ public com.google.protobuf.ByteString getRpoBytes() {
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16397,7 +16779,7 @@ public java.util.List<com.google.storage.v2.BucketAccessControl> getAclList() {
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16413,7 +16795,7 @@ public java.util.List<com.google.storage.v2.BucketAccessControl> getAclList() {
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16428,7 +16810,7 @@ public int getAclCount() {
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16443,7 +16825,7 @@ public com.google.storage.v2.BucketAccessControl getAcl(int index) {
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16461,7 +16843,7 @@ public com.google.storage.v2.BucketAccessControlOrBuilder getAclOrBuilder(int in
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16476,7 +16858,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getDefaultObjec
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16492,7 +16874,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getDefaultObjec
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16507,7 +16889,7 @@ public int getDefaultObjectAclCount() {
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -16522,7 +16904,7 @@ public com.google.storage.v2.ObjectAccessControl getDefaultObjectAcl(int index)
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -17058,7 +17440,8 @@ public com.google.storage.v2.Bucket.LoggingOrBuilder getLoggingOrBuilder() {
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -17073,7 +17456,8 @@ public boolean hasOwner() {
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -17088,7 +17472,8 @@ public com.google.storage.v2.Owner getOwner() {
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -18784,9 +19169,9 @@ public Builder setNameBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-     * `name` field. For globally unique buckets, this is equal to the "bucket
-     * name" of other Cloud Storage APIs. Example: "pub".
+     * Output only. The user-chosen part of the bucket name. The `{bucket}`
+     * portion of the `name` field. For globally unique buckets, this is equal to
+     * the "bucket name" of other Cloud Storage APIs. Example: "pub".
      * </pre>
      *
      * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -18808,9 +19193,9 @@ public java.lang.String getBucketId() {
      *
      *
      * <pre>
-     * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-     * `name` field. For globally unique buckets, this is equal to the "bucket
-     * name" of other Cloud Storage APIs. Example: "pub".
+     * Output only. The user-chosen part of the bucket name. The `{bucket}`
+     * portion of the `name` field. For globally unique buckets, this is equal to
+     * the "bucket name" of other Cloud Storage APIs. Example: "pub".
      * </pre>
      *
      * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -18832,9 +19217,9 @@ public com.google.protobuf.ByteString getBucketIdBytes() {
      *
      *
      * <pre>
-     * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-     * `name` field. For globally unique buckets, this is equal to the "bucket
-     * name" of other Cloud Storage APIs. Example: "pub".
+     * Output only. The user-chosen part of the bucket name. The `{bucket}`
+     * portion of the `name` field. For globally unique buckets, this is equal to
+     * the "bucket name" of other Cloud Storage APIs. Example: "pub".
      * </pre>
      *
      * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -18855,9 +19240,9 @@ public Builder setBucketId(java.lang.String value) {
      *
      *
      * <pre>
-     * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-     * `name` field. For globally unique buckets, this is equal to the "bucket
-     * name" of other Cloud Storage APIs. Example: "pub".
+     * Output only. The user-chosen part of the bucket name. The `{bucket}`
+     * portion of the `name` field. For globally unique buckets, this is equal to
+     * the "bucket name" of other Cloud Storage APIs. Example: "pub".
      * </pre>
      *
      * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -18874,9 +19259,9 @@ public Builder clearBucketId() {
      *
      *
      * <pre>
-     * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-     * `name` field. For globally unique buckets, this is equal to the "bucket
-     * name" of other Cloud Storage APIs. Example: "pub".
+     * Output only. The user-chosen part of the bucket name. The `{bucket}`
+     * portion of the `name` field. For globally unique buckets, this is equal to
+     * the "bucket name" of other Cloud Storage APIs. Example: "pub".
      * </pre>
      *
      * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19200,8 +19585,9 @@ public Builder clearMetageneration() {
      *
      *
      * <pre>
-     * Immutable. The location of the bucket. Object data for objects in the bucket resides
-     * in physical storage within this region.  Defaults to `US`. See the
+     * Immutable. The location of the bucket. Object data for objects in the
+     * bucket resides in physical storage within this region.  Defaults to `US`.
+     * See the
      * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
      * guide] for the authoritative list. Attempting to update this field after
      * the bucket is created will result in an error.
@@ -19226,8 +19612,9 @@ public java.lang.String getLocation() {
      *
      *
      * <pre>
-     * Immutable. The location of the bucket. Object data for objects in the bucket resides
-     * in physical storage within this region.  Defaults to `US`. See the
+     * Immutable. The location of the bucket. Object data for objects in the
+     * bucket resides in physical storage within this region.  Defaults to `US`.
+     * See the
      * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
      * guide] for the authoritative list. Attempting to update this field after
      * the bucket is created will result in an error.
@@ -19252,8 +19639,9 @@ public com.google.protobuf.ByteString getLocationBytes() {
      *
      *
      * <pre>
-     * Immutable. The location of the bucket. Object data for objects in the bucket resides
-     * in physical storage within this region.  Defaults to `US`. See the
+     * Immutable. The location of the bucket. Object data for objects in the
+     * bucket resides in physical storage within this region.  Defaults to `US`.
+     * See the
      * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
      * guide] for the authoritative list. Attempting to update this field after
      * the bucket is created will result in an error.
@@ -19277,8 +19665,9 @@ public Builder setLocation(java.lang.String value) {
      *
      *
      * <pre>
-     * Immutable. The location of the bucket. Object data for objects in the bucket resides
-     * in physical storage within this region.  Defaults to `US`. See the
+     * Immutable. The location of the bucket. Object data for objects in the
+     * bucket resides in physical storage within this region.  Defaults to `US`.
+     * See the
      * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
      * guide] for the authoritative list. Attempting to update this field after
      * the bucket is created will result in an error.
@@ -19298,8 +19687,9 @@ public Builder clearLocation() {
      *
      *
      * <pre>
-     * Immutable. The location of the bucket. Object data for objects in the bucket resides
-     * in physical storage within this region.  Defaults to `US`. See the
+     * Immutable. The location of the bucket. Object data for objects in the
+     * bucket resides in physical storage within this region.  Defaults to `US`.
+     * See the
      * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
      * guide] for the authoritative list. Attempting to update this field after
      * the bucket is created will result in an error.
@@ -19326,7 +19716,8 @@ public Builder setLocationBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+     * Output only. The location type of the bucket (region, dual-region,
+     * multi-region, etc).
      * </pre>
      *
      * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19348,7 +19739,8 @@ public java.lang.String getLocationType() {
      *
      *
      * <pre>
-     * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+     * Output only. The location type of the bucket (region, dual-region,
+     * multi-region, etc).
      * </pre>
      *
      * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19370,7 +19762,8 @@ public com.google.protobuf.ByteString getLocationTypeBytes() {
      *
      *
      * <pre>
-     * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+     * Output only. The location type of the bucket (region, dual-region,
+     * multi-region, etc).
      * </pre>
      *
      * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19391,7 +19784,8 @@ public Builder setLocationType(java.lang.String value) {
      *
      *
      * <pre>
-     * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+     * Output only. The location type of the bucket (region, dual-region,
+     * multi-region, etc).
      * </pre>
      *
      * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19408,7 +19802,8 @@ public Builder clearLocationType() {
      *
      *
      * <pre>
-     * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+     * Output only. The location type of the bucket (region, dual-region,
+     * multi-region, etc).
      * </pre>
      *
      * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -19710,7 +20105,7 @@ private void ensureAclIsMutable() {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19728,7 +20123,7 @@ public java.util.List<com.google.storage.v2.BucketAccessControl> getAclList() {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19746,7 +20141,7 @@ public int getAclCount() {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19764,7 +20159,7 @@ public com.google.storage.v2.BucketAccessControl getAcl(int index) {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19788,7 +20183,7 @@ public Builder setAcl(int index, com.google.storage.v2.BucketAccessControl value
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19810,7 +20205,7 @@ public Builder setAcl(
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19834,7 +20229,7 @@ public Builder addAcl(com.google.storage.v2.BucketAccessControl value) {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19858,7 +20253,7 @@ public Builder addAcl(int index, com.google.storage.v2.BucketAccessControl value
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19879,7 +20274,7 @@ public Builder addAcl(com.google.storage.v2.BucketAccessControl.Builder builderF
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19901,7 +20296,7 @@ public Builder addAcl(
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19923,7 +20318,7 @@ public Builder addAllAcl(
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19944,7 +20339,7 @@ public Builder clearAcl() {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19965,7 +20360,7 @@ public Builder removeAcl(int index) {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19979,7 +20374,7 @@ public com.google.storage.v2.BucketAccessControl.Builder getAclBuilder(int index
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -19997,7 +20392,7 @@ public com.google.storage.v2.BucketAccessControlOrBuilder getAclOrBuilder(int in
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20016,7 +20411,7 @@ public com.google.storage.v2.BucketAccessControlOrBuilder getAclOrBuilder(int in
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20031,7 +20426,7 @@ public com.google.storage.v2.BucketAccessControl.Builder addAclBuilder() {
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20046,7 +20441,7 @@ public com.google.storage.v2.BucketAccessControl.Builder addAclBuilder(int index
      *
      * <pre>
      * Access controls on the bucket.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20095,7 +20490,7 @@ private void ensureDefaultObjectAclIsMutable() {
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20113,7 +20508,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getDefaultObjec
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20131,7 +20526,7 @@ public int getDefaultObjectAclCount() {
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20149,7 +20544,7 @@ public com.google.storage.v2.ObjectAccessControl getDefaultObjectAcl(int index)
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20173,7 +20568,7 @@ public Builder setDefaultObjectAcl(int index, com.google.storage.v2.ObjectAccess
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20195,7 +20590,7 @@ public Builder setDefaultObjectAcl(
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20219,7 +20614,7 @@ public Builder addDefaultObjectAcl(com.google.storage.v2.ObjectAccessControl val
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20243,7 +20638,7 @@ public Builder addDefaultObjectAcl(int index, com.google.storage.v2.ObjectAccess
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20265,7 +20660,7 @@ public Builder addDefaultObjectAcl(
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20287,7 +20682,7 @@ public Builder addDefaultObjectAcl(
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20309,7 +20704,7 @@ public Builder addAllDefaultObjectAcl(
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20330,7 +20725,7 @@ public Builder clearDefaultObjectAcl() {
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20351,7 +20746,7 @@ public Builder removeDefaultObjectAcl(int index) {
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20365,7 +20760,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder getDefaultObjectAclBuil
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20384,7 +20779,7 @@ public com.google.storage.v2.ObjectAccessControlOrBuilder getDefaultObjectAclOrB
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20403,7 +20798,7 @@ public com.google.storage.v2.ObjectAccessControlOrBuilder getDefaultObjectAclOrB
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20418,7 +20813,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder addDefaultObjectAclBuil
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -20433,7 +20828,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder addDefaultObjectAclBuil
      *
      * <pre>
      * Default access controls to apply to new objects when no ACL is provided.
-     * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+     * If iam_config.uniform_bucket_level_access is enabled on this bucket,
      * requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -22316,7 +22711,8 @@ public com.google.storage.v2.Bucket.LoggingOrBuilder getLoggingOrBuilder() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22331,7 +22727,8 @@ public boolean hasOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22350,7 +22747,8 @@ public com.google.storage.v2.Owner getOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22373,7 +22771,8 @@ public Builder setOwner(com.google.storage.v2.Owner value) {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22393,7 +22792,8 @@ public Builder setOwner(com.google.storage.v2.Owner.Builder builderForValue) {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22417,7 +22817,8 @@ public Builder mergeOwner(com.google.storage.v2.Owner value) {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22438,7 +22839,8 @@ public Builder clearOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22453,7 +22855,8 @@ public com.google.storage.v2.Owner.Builder getOwnerBuilder() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
@@ -22470,7 +22873,8 @@ public com.google.storage.v2.OwnerOrBuilder getOwnerOrBuilder() {
      *
      *
      * <pre>
-     * Output only. The owner of the bucket. This is always the project team's owner group.
+     * Output only. The owner of the bucket. This is always the project team's
+     * owner group.
      * </pre>
      *
      * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControl.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControl.java
index ce18deb98..734923a71 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControl.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControl.java
@@ -261,8 +261,8 @@ public com.google.protobuf.ByteString getEntityBytes() {
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -285,8 +285,8 @@ public java.lang.String getEntityAlt() {
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1481,8 +1481,8 @@ public Builder setEntityBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1504,8 +1504,8 @@ public java.lang.String getEntityAlt() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1527,8 +1527,8 @@ public com.google.protobuf.ByteString getEntityAltBytes() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1549,8 +1549,8 @@ public Builder setEntityAlt(java.lang.String value) {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1567,8 +1567,8 @@ public Builder clearEntityAlt() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControlOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControlOrBuilder.java
index 2ba5df902..6b7573f3d 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControlOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/BucketAccessControlOrBuilder.java
@@ -136,8 +136,8 @@ public interface BucketAccessControlOrBuilder
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -149,8 +149,8 @@ public interface BucketAccessControlOrBuilder
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</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 91b60db26..5daa83078 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
@@ -52,9 +52,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-   * `name` field. For globally unique buckets, this is equal to the "bucket
-   * name" of other Cloud Storage APIs. Example: "pub".
+   * Output only. The user-chosen part of the bucket name. The `{bucket}`
+   * portion of the `name` field. For globally unique buckets, this is equal to
+   * the "bucket name" of other Cloud Storage APIs. Example: "pub".
    * </pre>
    *
    * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -66,9 +66,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-   * `name` field. For globally unique buckets, this is equal to the "bucket
-   * name" of other Cloud Storage APIs. Example: "pub".
+   * Output only. The user-chosen part of the bucket name. The `{bucket}`
+   * portion of the `name` field. For globally unique buckets, this is equal to
+   * the "bucket name" of other Cloud Storage APIs. Example: "pub".
    * </pre>
    *
    * <code>string bucket_id = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -158,8 +158,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Immutable. The location of the bucket. Object data for objects in the bucket resides
-   * in physical storage within this region.  Defaults to `US`. See the
+   * Immutable. The location of the bucket. Object data for objects in the
+   * bucket resides in physical storage within this region.  Defaults to `US`.
+   * See the
    * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
    * guide] for the authoritative list. Attempting to update this field after
    * the bucket is created will result in an error.
@@ -174,8 +175,9 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Immutable. The location of the bucket. Object data for objects in the bucket resides
-   * in physical storage within this region.  Defaults to `US`. See the
+   * Immutable. The location of the bucket. Object data for objects in the
+   * bucket resides in physical storage within this region.  Defaults to `US`.
+   * See the
    * [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
    * guide] for the authoritative list. Attempting to update this field after
    * the bucket is created will result in an error.
@@ -191,7 +193,8 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+   * Output only. The location type of the bucket (region, dual-region,
+   * multi-region, etc).
    * </pre>
    *
    * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -203,7 +206,8 @@ public interface BucketOrBuilder
    *
    *
    * <pre>
-   * Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+   * Output only. The location type of the bucket (region, dual-region,
+   * multi-region, etc).
    * </pre>
    *
    * <code>string location_type = 6 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -287,7 +291,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -299,7 +303,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -311,7 +315,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -323,7 +327,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -336,7 +340,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Access controls on the bucket.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -349,7 +353,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -361,7 +365,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -373,7 +377,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -385,7 +389,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -398,7 +402,7 @@ public interface BucketOrBuilder
    *
    * <pre>
    * Default access controls to apply to new objects when no ACL is provided.
-   * If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+   * If iam_config.uniform_bucket_level_access is enabled on this bucket,
    * requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -796,7 +800,8 @@ java.lang.String getLabelsOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -808,7 +813,8 @@ java.lang.String getLabelsOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -820,7 +826,8 @@ java.lang.String getLabelsOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the bucket. This is always the project team's owner group.
+   * Output only. The owner of the bucket. This is always the project team's
+   * owner group.
    * </pre>
    *
    * <code>.google.storage.v2.Owner owner = 19 [(.google.api.field_behavior) = OUTPUT_ONLY];</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
index 70f255efa..a525e210f 100644
--- 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
@@ -74,8 +74,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The upload_id of the resumable upload to cancel. This should be copied
-   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * 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>
@@ -98,8 +98,8 @@ public 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`.
+   * 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>
@@ -455,8 +455,8 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The upload_id of the resumable upload to cancel. This should be copied
-     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * 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>
@@ -478,8 +478,8 @@ public 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`.
+     * 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>
@@ -501,8 +501,8 @@ public com.google.protobuf.ByteString getUploadIdBytes() {
      *
      *
      * <pre>
-     * Required. The upload_id of the resumable upload to cancel. This should be copied
-     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * 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>
@@ -523,8 +523,8 @@ public Builder setUploadId(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The upload_id of the resumable upload to cancel. This should be copied
-     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * 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>
@@ -541,8 +541,8 @@ public Builder clearUploadId() {
      *
      *
      * <pre>
-     * Required. The upload_id of the resumable upload to cancel. This should be copied
-     * from the `upload_id` field of `StartResumableWriteResponse`.
+     * 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>
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
index 764914329..11d2a6918 100644
--- 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
@@ -27,8 +27,8 @@ public interface CancelResumableWriteRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The upload_id of the resumable upload to cancel. This should be copied
-   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * 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>
@@ -40,8 +40,8 @@ public interface CancelResumableWriteRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The upload_id of the resumable upload to cancel. This should be copied
-   * from the `upload_id` field of `StartResumableWriteResponse`.
+   * 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>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequest.java
index a3250a4c9..4567bc54d 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequest.java
@@ -78,8 +78,8 @@ public interface SourceObjectOrBuilder
      *
      *
      * <pre>
-     * Required. The source object's name. All source objects must reside in the same
-     * bucket.
+     * Required. The source object's name. All source objects must reside in the
+     * same bucket.
      * </pre>
      *
      * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -91,8 +91,8 @@ public interface SourceObjectOrBuilder
      *
      *
      * <pre>
-     * Required. The source object's name. All source objects must reside in the same
-     * bucket.
+     * Required. The source object's name. All source objects must reside in the
+     * same bucket.
      * </pre>
      *
      * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -846,8 +846,8 @@ public com.google.protobuf.Parser<ObjectPreconditions> getParserForType() {
      *
      *
      * <pre>
-     * Required. The source object's name. All source objects must reside in the same
-     * bucket.
+     * Required. The source object's name. All source objects must reside in the
+     * same bucket.
      * </pre>
      *
      * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -870,8 +870,8 @@ public java.lang.String getName() {
      *
      *
      * <pre>
-     * Required. The source object's name. All source objects must reside in the same
-     * bucket.
+     * Required. The source object's name. All source objects must reside in the
+     * same bucket.
      * </pre>
      *
      * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1364,8 +1364,8 @@ public Builder mergeFrom(
        *
        *
        * <pre>
-       * Required. The source object's name. All source objects must reside in the same
-       * bucket.
+       * Required. The source object's name. All source objects must reside in the
+       * same bucket.
        * </pre>
        *
        * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1387,8 +1387,8 @@ public java.lang.String getName() {
        *
        *
        * <pre>
-       * Required. The source object's name. All source objects must reside in the same
-       * bucket.
+       * Required. The source object's name. All source objects must reside in the
+       * same bucket.
        * </pre>
        *
        * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1410,8 +1410,8 @@ public com.google.protobuf.ByteString getNameBytes() {
        *
        *
        * <pre>
-       * Required. The source object's name. All source objects must reside in the same
-       * bucket.
+       * Required. The source object's name. All source objects must reside in the
+       * same bucket.
        * </pre>
        *
        * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1432,8 +1432,8 @@ public Builder setName(java.lang.String value) {
        *
        *
        * <pre>
-       * Required. The source object's name. All source objects must reside in the same
-       * bucket.
+       * Required. The source object's name. All source objects must reside in the
+       * same bucket.
        * </pre>
        *
        * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1450,8 +1450,8 @@ public Builder clearName() {
        *
        *
        * <pre>
-       * Required. The source object's name. All source objects must reside in the same
-       * bucket.
+       * Required. The source object's name. All source objects must reside in the
+       * same bucket.
        * </pre>
        *
        * <code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -2152,6 +2152,57 @@ public com.google.storage.v2.CommonObjectRequestParams getCommonObjectRequestPar
     return getCommonObjectRequestParams();
   }
 
+  public static final int OBJECT_CHECKSUMS_FIELD_NUMBER = 10;
+  private com.google.storage.v2.ObjectChecksums objectChecksums_;
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  @java.lang.Override
+  public boolean hasObjectChecksums() {
+    return objectChecksums_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   *
+   * @return The objectChecksums.
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+    return objectChecksums_ == null
+        ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+        : objectChecksums_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+    return getObjectChecksums();
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -2187,6 +2238,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(destinationPredefinedAcl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 9, destinationPredefinedAcl_);
     }
+    if (objectChecksums_ != null) {
+      output.writeMessage(10, getObjectChecksums());
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -2220,6 +2274,9 @@ public int getSerializedSize() {
       size +=
           com.google.protobuf.GeneratedMessageV3.computeStringSize(9, destinationPredefinedAcl_);
     }
+    if (objectChecksums_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(10, getObjectChecksums());
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -2256,6 +2313,10 @@ public boolean equals(final java.lang.Object obj) {
       if (!getCommonObjectRequestParams().equals(other.getCommonObjectRequestParams()))
         return false;
     }
+    if (hasObjectChecksums() != other.hasObjectChecksums()) return false;
+    if (hasObjectChecksums()) {
+      if (!getObjectChecksums().equals(other.getObjectChecksums())) return false;
+    }
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -2291,6 +2352,10 @@ public int hashCode() {
       hash = (37 * hash) + COMMON_OBJECT_REQUEST_PARAMS_FIELD_NUMBER;
       hash = (53 * hash) + getCommonObjectRequestParams().hashCode();
     }
+    if (hasObjectChecksums()) {
+      hash = (37 * hash) + OBJECT_CHECKSUMS_FIELD_NUMBER;
+      hash = (53 * hash) + getObjectChecksums().hashCode();
+    }
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -2456,6 +2521,12 @@ public Builder clear() {
         commonObjectRequestParams_ = null;
         commonObjectRequestParamsBuilder_ = null;
       }
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
       return this;
     }
 
@@ -2514,6 +2585,11 @@ public com.google.storage.v2.ComposeObjectRequest buildPartial() {
       } else {
         result.commonObjectRequestParams_ = commonObjectRequestParamsBuilder_.build();
       }
+      if (objectChecksumsBuilder_ == null) {
+        result.objectChecksums_ = objectChecksums_;
+      } else {
+        result.objectChecksums_ = objectChecksumsBuilder_.build();
+      }
       result.bitField0_ = to_bitField0_;
       onBuilt();
       return result;
@@ -2611,6 +2687,9 @@ public Builder mergeFrom(com.google.storage.v2.ComposeObjectRequest other) {
       if (other.hasCommonObjectRequestParams()) {
         mergeCommonObjectRequestParams(other.getCommonObjectRequestParams());
       }
+      if (other.hasObjectChecksums()) {
+        mergeObjectChecksums(other.getObjectChecksums());
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -2688,6 +2767,12 @@ public Builder mergeFrom(
 
                 break;
               } // case 74
+            case 82:
+              {
+                input.readMessage(getObjectChecksumsFieldBuilder().getBuilder(), extensionRegistry);
+
+                break;
+              } // case 82
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -3857,6 +3942,201 @@ public Builder clearCommonObjectRequestParams() {
       return commonObjectRequestParamsBuilder_;
     }
 
+    private com.google.storage.v2.ObjectChecksums objectChecksums_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        objectChecksumsBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     *
+     * @return Whether the objectChecksums field is set.
+     */
+    public boolean hasObjectChecksums() {
+      return objectChecksumsBuilder_ != null || objectChecksums_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     *
+     * @return The objectChecksums.
+     */
+    public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      } else {
+        return objectChecksumsBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public Builder setObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        objectChecksums_ = value;
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public Builder setObjectChecksums(
+        com.google.storage.v2.ObjectChecksums.Builder builderForValue) {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = builderForValue.build();
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public Builder mergeObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (objectChecksums_ != null) {
+          objectChecksums_ =
+              com.google.storage.v2.ObjectChecksums.newBuilder(objectChecksums_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          objectChecksums_ = value;
+        }
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public Builder clearObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+        onChanged();
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public com.google.storage.v2.ObjectChecksums.Builder getObjectChecksumsBuilder() {
+
+      onChanged();
+      return getObjectChecksumsFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+      if (objectChecksumsBuilder_ != null) {
+        return objectChecksumsBuilder_.getMessageOrBuilder();
+      } else {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be validated against the
+     * combined checksums of the component objects.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        getObjectChecksumsFieldBuilder() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksumsBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.storage.v2.ObjectChecksums,
+                com.google.storage.v2.ObjectChecksums.Builder,
+                com.google.storage.v2.ObjectChecksumsOrBuilder>(
+                getObjectChecksums(), getParentForChildren(), isClean());
+        objectChecksums_ = null;
+      }
+      return objectChecksumsBuilder_;
+    }
+
     @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/ComposeObjectRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequestOrBuilder.java
index 7d9f6ab15..9e95be159 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ComposeObjectRequestOrBuilder.java
@@ -264,4 +264,42 @@ com.google.storage.v2.ComposeObjectRequest.SourceObjectOrBuilder getSourceObject
    * <code>.google.storage.v2.CommonObjectRequestParams common_object_request_params = 7;</code>
    */
   com.google.storage.v2.CommonObjectRequestParamsOrBuilder getCommonObjectRequestParamsOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  boolean hasObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   *
+   * @return The objectChecksums.
+   */
+  com.google.storage.v2.ObjectChecksums getObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be validated against the
+   * combined checksums of the component objects.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 10;</code>
+   */
+  com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder();
 }
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequest.java
index 5525380b3..51e8175f0 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequest.java
@@ -184,9 +184,9 @@ public com.google.storage.v2.BucketOrBuilder getBucketOrBuilder() {
    *
    *
    * <pre>
-   * Required. The ID to use for this bucket, which will become the final component of
-   * the bucket's resource name. For example, the value `foo` might result in
-   * a bucket with the name `projects/123456/buckets/foo`.
+   * Required. The ID to use for this bucket, which will become the final
+   * component of the bucket's resource name. For example, the value `foo` might
+   * result in a bucket with the name `projects/123456/buckets/foo`.
    * </pre>
    *
    * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -209,9 +209,9 @@ public java.lang.String getBucketId() {
    *
    *
    * <pre>
-   * Required. The ID to use for this bucket, which will become the final component of
-   * the bucket's resource name. For example, the value `foo` might result in
-   * a bucket with the name `projects/123456/buckets/foo`.
+   * Required. The ID to use for this bucket, which will become the final
+   * component of the bucket's resource name. For example, the value `foo` might
+   * result in a bucket with the name `projects/123456/buckets/foo`.
    * </pre>
    *
    * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1095,9 +1095,9 @@ public com.google.storage.v2.BucketOrBuilder getBucketOrBuilder() {
      *
      *
      * <pre>
-     * Required. The ID to use for this bucket, which will become the final component of
-     * the bucket's resource name. For example, the value `foo` might result in
-     * a bucket with the name `projects/123456/buckets/foo`.
+     * Required. The ID to use for this bucket, which will become the final
+     * component of the bucket's resource name. For example, the value `foo` might
+     * result in a bucket with the name `projects/123456/buckets/foo`.
      * </pre>
      *
      * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1119,9 +1119,9 @@ public java.lang.String getBucketId() {
      *
      *
      * <pre>
-     * Required. The ID to use for this bucket, which will become the final component of
-     * the bucket's resource name. For example, the value `foo` might result in
-     * a bucket with the name `projects/123456/buckets/foo`.
+     * Required. The ID to use for this bucket, which will become the final
+     * component of the bucket's resource name. For example, the value `foo` might
+     * result in a bucket with the name `projects/123456/buckets/foo`.
      * </pre>
      *
      * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1143,9 +1143,9 @@ public com.google.protobuf.ByteString getBucketIdBytes() {
      *
      *
      * <pre>
-     * Required. The ID to use for this bucket, which will become the final component of
-     * the bucket's resource name. For example, the value `foo` might result in
-     * a bucket with the name `projects/123456/buckets/foo`.
+     * Required. The ID to use for this bucket, which will become the final
+     * component of the bucket's resource name. For example, the value `foo` might
+     * result in a bucket with the name `projects/123456/buckets/foo`.
      * </pre>
      *
      * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1166,9 +1166,9 @@ public Builder setBucketId(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The ID to use for this bucket, which will become the final component of
-     * the bucket's resource name. For example, the value `foo` might result in
-     * a bucket with the name `projects/123456/buckets/foo`.
+     * Required. The ID to use for this bucket, which will become the final
+     * component of the bucket's resource name. For example, the value `foo` might
+     * result in a bucket with the name `projects/123456/buckets/foo`.
      * </pre>
      *
      * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1185,9 +1185,9 @@ public Builder clearBucketId() {
      *
      *
      * <pre>
-     * Required. The ID to use for this bucket, which will become the final component of
-     * the bucket's resource name. For example, the value `foo` might result in
-     * a bucket with the name `projects/123456/buckets/foo`.
+     * Required. The ID to use for this bucket, which will become the final
+     * component of the bucket's resource name. For example, the value `foo` might
+     * result in a bucket with the name `projects/123456/buckets/foo`.
      * </pre>
      *
      * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequestOrBuilder.java
index 1dd1bc522..d12100a72 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/CreateBucketRequestOrBuilder.java
@@ -100,9 +100,9 @@ public interface CreateBucketRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The ID to use for this bucket, which will become the final component of
-   * the bucket's resource name. For example, the value `foo` might result in
-   * a bucket with the name `projects/123456/buckets/foo`.
+   * Required. The ID to use for this bucket, which will become the final
+   * component of the bucket's resource name. For example, the value `foo` might
+   * result in a bucket with the name `projects/123456/buckets/foo`.
    * </pre>
    *
    * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -114,9 +114,9 @@ public interface CreateBucketRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The ID to use for this bucket, which will become the final component of
-   * the bucket's resource name. For example, the value `foo` might result in
-   * a bucket with the name `projects/123456/buckets/foo`.
+   * Required. The ID to use for this bucket, which will become the final
+   * component of the bucket's resource name. For example, the value `foo` might
+   * result in a bucket with the name `projects/123456/buckets/foo`.
    * </pre>
    *
    * <code>string bucket_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>
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 63e74c9db..4a359e6d8 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
@@ -74,9 +74,9 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -101,9 +101,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -530,9 +530,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -556,9 +556,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -582,9 +582,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -607,9 +607,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -628,9 +628,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * 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.
+     * 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 a1b9cdc32..eb241f060 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
@@ -27,9 +27,9 @@ public interface CreateHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -43,9 +43,9 @@ public interface CreateHmacKeyRequestOrBuilder
    *
    *
    * <pre>
-   * 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.
+   * 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/DeleteObjectRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/DeleteObjectRequest.java
index 9321d4720..ad7225992 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
@@ -125,7 +125,9 @@ public com.google.protobuf.ByteString getBucketBytes() {
    *
    *
    * <pre>
-   * Required. The name of the object to delete (when not using a resumable write).
+   * Required. The name of the finalized object to delete.
+   * Note: If you want to delete an unfinalized resumable upload please use
+   * `CancelResumableWrite`.
    * </pre>
    *
    * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -148,7 +150,9 @@ public java.lang.String getObject() {
    *
    *
    * <pre>
-   * Required. The name of the object to delete (when not using a resumable write).
+   * Required. The name of the finalized object to delete.
+   * Note: If you want to delete an unfinalized resumable upload please use
+   * `CancelResumableWrite`.
    * </pre>
    *
    * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1025,7 +1029,9 @@ public Builder setBucketBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. The name of the object to delete (when not using a resumable write).
+     * Required. The name of the finalized object to delete.
+     * Note: If you want to delete an unfinalized resumable upload please use
+     * `CancelResumableWrite`.
      * </pre>
      *
      * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1047,7 +1053,9 @@ public java.lang.String getObject() {
      *
      *
      * <pre>
-     * Required. The name of the object to delete (when not using a resumable write).
+     * Required. The name of the finalized object to delete.
+     * Note: If you want to delete an unfinalized resumable upload please use
+     * `CancelResumableWrite`.
      * </pre>
      *
      * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1069,7 +1077,9 @@ public com.google.protobuf.ByteString getObjectBytes() {
      *
      *
      * <pre>
-     * Required. The name of the object to delete (when not using a resumable write).
+     * Required. The name of the finalized object to delete.
+     * Note: If you want to delete an unfinalized resumable upload please use
+     * `CancelResumableWrite`.
      * </pre>
      *
      * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1090,7 +1100,9 @@ public Builder setObject(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The name of the object to delete (when not using a resumable write).
+     * Required. The name of the finalized object to delete.
+     * Note: If you want to delete an unfinalized resumable upload please use
+     * `CancelResumableWrite`.
      * </pre>
      *
      * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -1107,7 +1119,9 @@ public Builder clearObject() {
      *
      *
      * <pre>
-     * Required. The name of the object to delete (when not using a resumable write).
+     * Required. The name of the finalized object to delete.
+     * Note: If you want to delete an unfinalized resumable upload please use
+     * `CancelResumableWrite`.
      * </pre>
      *
      * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
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 e0f4d1220..7c25ed32b 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
@@ -52,7 +52,9 @@ public interface DeleteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The name of the object to delete (when not using a resumable write).
+   * Required. The name of the finalized object to delete.
+   * Note: If you want to delete an unfinalized resumable upload please use
+   * `CancelResumableWrite`.
    * </pre>
    *
    * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -64,7 +66,9 @@ public interface DeleteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The name of the object to delete (when not using a resumable write).
+   * Required. The name of the finalized object to delete.
+   * Note: If you want to delete an unfinalized resumable upload please use
+   * `CancelResumableWrite`.
    * </pre>
    *
    * <code>string object = 2 [(.google.api.field_behavior) = REQUIRED];</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 04615f421..0a0b09733 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
@@ -180,9 +180,9 @@ public com.google.protobuf.ByteString getAccessIdBytes() {
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -207,9 +207,9 @@ public java.lang.String getProject() {
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -1210,9 +1210,9 @@ public Builder setAccessIdBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -1236,9 +1236,9 @@ public java.lang.String getProject() {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -1262,9 +1262,9 @@ public com.google.protobuf.ByteString getProjectBytes() {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -1287,9 +1287,9 @@ public Builder setProject(java.lang.String value) {
      *
      *
      * <pre>
-     * 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.
+     * 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>
@@ -1308,9 +1308,9 @@ public Builder clearProject() {
      *
      *
      * <pre>
-     * 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.
+     * 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>
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 a3ab3e0e7..41e7deae8 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
@@ -81,9 +81,9 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * 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.
+   * 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>
@@ -97,9 +97,9 @@ public interface HmacKeyMetadataOrBuilder
    *
    *
    * <pre>
-   * 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.
+   * 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>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequest.java
index 4e3a7a0d4..15adfcadf 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequest.java
@@ -408,13 +408,13 @@ public com.google.protobuf.FieldMaskOrBuilder getReadMaskOrBuilder() {
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically equal to or
-   * after lexicographic_start. If lexicographic_end is also set, the objects
-   * listed have names between lexicographic_start (inclusive) and
+   * Optional. Filter results to objects whose names are lexicographically equal
+   * to or after lexicographic_start. If lexicographic_end is also set, the
+   * objects listed have names between lexicographic_start (inclusive) and
    * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_start = 10;</code>
+   * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The lexicographicStart.
    */
@@ -434,13 +434,13 @@ public java.lang.String getLexicographicStart() {
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically equal to or
-   * after lexicographic_start. If lexicographic_end is also set, the objects
-   * listed have names between lexicographic_start (inclusive) and
+   * Optional. Filter results to objects whose names are lexicographically equal
+   * to or after lexicographic_start. If lexicographic_end is also set, the
+   * objects listed have names between lexicographic_start (inclusive) and
    * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_start = 10;</code>
+   * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The bytes for lexicographicStart.
    */
@@ -463,13 +463,13 @@ public com.google.protobuf.ByteString getLexicographicStartBytes() {
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically before
-   * lexicographic_end. If lexicographic_start is also set, the objects listed
-   * have names between lexicographic_start (inclusive) and lexicographic_end
-   * (exclusive).
+   * Optional. Filter results to objects whose names are lexicographically
+   * before lexicographic_end. If lexicographic_start is also set, the objects
+   * listed have names between lexicographic_start (inclusive) and
+   * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_end = 11;</code>
+   * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The lexicographicEnd.
    */
@@ -489,13 +489,13 @@ public java.lang.String getLexicographicEnd() {
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically before
-   * lexicographic_end. If lexicographic_start is also set, the objects listed
-   * have names between lexicographic_start (inclusive) and lexicographic_end
-   * (exclusive).
+   * Optional. Filter results to objects whose names are lexicographically
+   * before lexicographic_end. If lexicographic_start is also set, the objects
+   * listed have names between lexicographic_start (inclusive) and
+   * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_end = 11;</code>
+   * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The bytes for lexicographicEnd.
    */
@@ -1920,13 +1920,13 @@ public com.google.protobuf.FieldMaskOrBuilder getReadMaskOrBuilder() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically equal to or
-     * after lexicographic_start. If lexicographic_end is also set, the objects
-     * listed have names between lexicographic_start (inclusive) and
+     * Optional. Filter results to objects whose names are lexicographically equal
+     * to or after lexicographic_start. If lexicographic_end is also set, the
+     * objects listed have names between lexicographic_start (inclusive) and
      * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_start = 10;</code>
+     * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return The lexicographicStart.
      */
@@ -1945,13 +1945,13 @@ public java.lang.String getLexicographicStart() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically equal to or
-     * after lexicographic_start. If lexicographic_end is also set, the objects
-     * listed have names between lexicographic_start (inclusive) and
+     * Optional. Filter results to objects whose names are lexicographically equal
+     * to or after lexicographic_start. If lexicographic_end is also set, the
+     * objects listed have names between lexicographic_start (inclusive) and
      * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_start = 10;</code>
+     * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return The bytes for lexicographicStart.
      */
@@ -1970,13 +1970,13 @@ public com.google.protobuf.ByteString getLexicographicStartBytes() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically equal to or
-     * after lexicographic_start. If lexicographic_end is also set, the objects
-     * listed have names between lexicographic_start (inclusive) and
+     * Optional. Filter results to objects whose names are lexicographically equal
+     * to or after lexicographic_start. If lexicographic_end is also set, the
+     * objects listed have names between lexicographic_start (inclusive) and
      * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_start = 10;</code>
+     * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @param value The lexicographicStart to set.
      * @return This builder for chaining.
@@ -1994,13 +1994,13 @@ public Builder setLexicographicStart(java.lang.String value) {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically equal to or
-     * after lexicographic_start. If lexicographic_end is also set, the objects
-     * listed have names between lexicographic_start (inclusive) and
+     * Optional. Filter results to objects whose names are lexicographically equal
+     * to or after lexicographic_start. If lexicographic_end is also set, the
+     * objects listed have names between lexicographic_start (inclusive) and
      * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_start = 10;</code>
+     * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return This builder for chaining.
      */
@@ -2014,13 +2014,13 @@ public Builder clearLexicographicStart() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically equal to or
-     * after lexicographic_start. If lexicographic_end is also set, the objects
-     * listed have names between lexicographic_start (inclusive) and
+     * Optional. Filter results to objects whose names are lexicographically equal
+     * to or after lexicographic_start. If lexicographic_end is also set, the
+     * objects listed have names between lexicographic_start (inclusive) and
      * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_start = 10;</code>
+     * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @param value The bytes for lexicographicStart to set.
      * @return This builder for chaining.
@@ -2041,13 +2041,13 @@ public Builder setLexicographicStartBytes(com.google.protobuf.ByteString value)
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically before
-     * lexicographic_end. If lexicographic_start is also set, the objects listed
-     * have names between lexicographic_start (inclusive) and lexicographic_end
-     * (exclusive).
+     * Optional. Filter results to objects whose names are lexicographically
+     * before lexicographic_end. If lexicographic_start is also set, the objects
+     * listed have names between lexicographic_start (inclusive) and
+     * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_end = 11;</code>
+     * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return The lexicographicEnd.
      */
@@ -2066,13 +2066,13 @@ public java.lang.String getLexicographicEnd() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically before
-     * lexicographic_end. If lexicographic_start is also set, the objects listed
-     * have names between lexicographic_start (inclusive) and lexicographic_end
-     * (exclusive).
+     * Optional. Filter results to objects whose names are lexicographically
+     * before lexicographic_end. If lexicographic_start is also set, the objects
+     * listed have names between lexicographic_start (inclusive) and
+     * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_end = 11;</code>
+     * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return The bytes for lexicographicEnd.
      */
@@ -2091,13 +2091,13 @@ public com.google.protobuf.ByteString getLexicographicEndBytes() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically before
-     * lexicographic_end. If lexicographic_start is also set, the objects listed
-     * have names between lexicographic_start (inclusive) and lexicographic_end
-     * (exclusive).
+     * Optional. Filter results to objects whose names are lexicographically
+     * before lexicographic_end. If lexicographic_start is also set, the objects
+     * listed have names between lexicographic_start (inclusive) and
+     * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_end = 11;</code>
+     * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @param value The lexicographicEnd to set.
      * @return This builder for chaining.
@@ -2115,13 +2115,13 @@ public Builder setLexicographicEnd(java.lang.String value) {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically before
-     * lexicographic_end. If lexicographic_start is also set, the objects listed
-     * have names between lexicographic_start (inclusive) and lexicographic_end
-     * (exclusive).
+     * Optional. Filter results to objects whose names are lexicographically
+     * before lexicographic_end. If lexicographic_start is also set, the objects
+     * listed have names between lexicographic_start (inclusive) and
+     * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_end = 11;</code>
+     * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @return This builder for chaining.
      */
@@ -2135,13 +2135,13 @@ public Builder clearLexicographicEnd() {
      *
      *
      * <pre>
-     * Filter results to objects whose names are lexicographically before
-     * lexicographic_end. If lexicographic_start is also set, the objects listed
-     * have names between lexicographic_start (inclusive) and lexicographic_end
-     * (exclusive).
+     * Optional. Filter results to objects whose names are lexicographically
+     * before lexicographic_end. If lexicographic_start is also set, the objects
+     * listed have names between lexicographic_start (inclusive) and
+     * lexicographic_end (exclusive).
      * </pre>
      *
-     * <code>string lexicographic_end = 11;</code>
+     * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
      *
      * @param value The bytes for lexicographicEnd to set.
      * @return This builder for chaining.
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequestOrBuilder.java
index f836678a8..187cfa59c 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ListObjectsRequestOrBuilder.java
@@ -234,13 +234,13 @@ public interface ListObjectsRequestOrBuilder
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically equal to or
-   * after lexicographic_start. If lexicographic_end is also set, the objects
-   * listed have names between lexicographic_start (inclusive) and
+   * Optional. Filter results to objects whose names are lexicographically equal
+   * to or after lexicographic_start. If lexicographic_end is also set, the
+   * objects listed have names between lexicographic_start (inclusive) and
    * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_start = 10;</code>
+   * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The lexicographicStart.
    */
@@ -249,13 +249,13 @@ public interface ListObjectsRequestOrBuilder
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically equal to or
-   * after lexicographic_start. If lexicographic_end is also set, the objects
-   * listed have names between lexicographic_start (inclusive) and
+   * Optional. Filter results to objects whose names are lexicographically equal
+   * to or after lexicographic_start. If lexicographic_end is also set, the
+   * objects listed have names between lexicographic_start (inclusive) and
    * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_start = 10;</code>
+   * <code>string lexicographic_start = 10 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The bytes for lexicographicStart.
    */
@@ -265,13 +265,13 @@ public interface ListObjectsRequestOrBuilder
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically before
-   * lexicographic_end. If lexicographic_start is also set, the objects listed
-   * have names between lexicographic_start (inclusive) and lexicographic_end
-   * (exclusive).
+   * Optional. Filter results to objects whose names are lexicographically
+   * before lexicographic_end. If lexicographic_start is also set, the objects
+   * listed have names between lexicographic_start (inclusive) and
+   * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_end = 11;</code>
+   * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The lexicographicEnd.
    */
@@ -280,13 +280,13 @@ public interface ListObjectsRequestOrBuilder
    *
    *
    * <pre>
-   * Filter results to objects whose names are lexicographically before
-   * lexicographic_end. If lexicographic_start is also set, the objects listed
-   * have names between lexicographic_start (inclusive) and lexicographic_end
-   * (exclusive).
+   * Optional. Filter results to objects whose names are lexicographically
+   * before lexicographic_end. If lexicographic_start is also set, the objects
+   * listed have names between lexicographic_start (inclusive) and
+   * lexicographic_end (exclusive).
    * </pre>
    *
-   * <code>string lexicographic_end = 11;</code>
+   * <code>string lexicographic_end = 11 [(.google.api.field_behavior) = OPTIONAL];</code>
    *
    * @return The bytes for lexicographicEnd.
    */
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequest.java
index 0eb8b59eb..9ee3c28fb 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequest.java
@@ -127,8 +127,8 @@ public com.google.protobuf.ByteString getBucketBytes() {
    *
    *
    * <pre>
-   * Required. Makes the operation conditional on whether bucket's current metageneration
-   * matches the given value. Must be positive.
+   * Required. Makes the operation conditional on whether bucket's current
+   * metageneration matches the given value. Must be positive.
    * </pre>
    *
    * <code>int64 if_metageneration_match = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -613,8 +613,8 @@ public Builder setBucketBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. Makes the operation conditional on whether bucket's current metageneration
-     * matches the given value. Must be positive.
+     * Required. Makes the operation conditional on whether bucket's current
+     * metageneration matches the given value. Must be positive.
      * </pre>
      *
      * <code>int64 if_metageneration_match = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -629,8 +629,8 @@ public long getIfMetagenerationMatch() {
      *
      *
      * <pre>
-     * Required. Makes the operation conditional on whether bucket's current metageneration
-     * matches the given value. Must be positive.
+     * Required. Makes the operation conditional on whether bucket's current
+     * metageneration matches the given value. Must be positive.
      * </pre>
      *
      * <code>int64 if_metageneration_match = 2 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -648,8 +648,8 @@ public Builder setIfMetagenerationMatch(long value) {
      *
      *
      * <pre>
-     * Required. Makes the operation conditional on whether bucket's current metageneration
-     * matches the given value. Must be positive.
+     * Required. Makes the operation conditional on whether bucket's current
+     * metageneration matches the given value. Must be positive.
      * </pre>
      *
      * <code>int64 if_metageneration_match = 2 [(.google.api.field_behavior) = REQUIRED];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequestOrBuilder.java
index f266938e2..7a5eae42f 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/LockBucketRetentionPolicyRequestOrBuilder.java
@@ -56,8 +56,8 @@ public interface LockBucketRetentionPolicyRequestOrBuilder
    *
    *
    * <pre>
-   * Required. Makes the operation conditional on whether bucket's current metageneration
-   * matches the given value. Must be positive.
+   * Required. Makes the operation conditional on whether bucket's current
+   * metageneration matches the given value. Must be positive.
    * </pre>
    *
    * <code>int64 if_metageneration_match = 2 [(.google.api.field_behavior) = REQUIRED];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Notification.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Notification.java
index 459695864..5ce84b546 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Notification.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/Notification.java
@@ -144,7 +144,8 @@ public com.google.protobuf.ByteString getNameBytes() {
    *
    *
    * <pre>
-   * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+   * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+   * as:
    * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
    * </pre>
    *
@@ -168,7 +169,8 @@ public java.lang.String getTopic() {
    *
    *
    * <pre>
-   * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+   * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+   * as:
    * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
    * </pre>
    *
@@ -1148,7 +1150,8 @@ public Builder setNameBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+     * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+     * as:
      * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
      * </pre>
      *
@@ -1171,7 +1174,8 @@ public java.lang.String getTopic() {
      *
      *
      * <pre>
-     * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+     * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+     * as:
      * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
      * </pre>
      *
@@ -1194,7 +1198,8 @@ public com.google.protobuf.ByteString getTopicBytes() {
      *
      *
      * <pre>
-     * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+     * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+     * as:
      * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
      * </pre>
      *
@@ -1216,7 +1221,8 @@ public Builder setTopic(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+     * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+     * as:
      * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
      * </pre>
      *
@@ -1234,7 +1240,8 @@ public Builder clearTopic() {
      *
      *
      * <pre>
-     * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+     * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+     * as:
      * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
      * </pre>
      *
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/NotificationOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/NotificationOrBuilder.java
index 367f1e408..4298302be 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/NotificationOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/NotificationOrBuilder.java
@@ -58,7 +58,8 @@ public interface NotificationOrBuilder
    *
    *
    * <pre>
-   * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+   * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+   * as:
    * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
    * </pre>
    *
@@ -71,7 +72,8 @@ public interface NotificationOrBuilder
    *
    *
    * <pre>
-   * Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+   * Required. The Pub/Sub topic to which this subscription publishes. Formatted
+   * as:
    * '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
    * </pre>
    *
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 6d81467b8..9e207bf51 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
@@ -93,9 +93,9 @@ protected com.google.protobuf.MapField internalGetMapField(int number) {
    *
    *
    * <pre>
-   * Immutable. The name of this object. Nearly any sequence of unicode characters is
-   * valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of this object. Nearly any sequence of unicode
+   * characters is valid. See
+   * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -122,9 +122,9 @@ public java.lang.String getName() {
    *
    *
    * <pre>
-   * Immutable. The name of this object. Nearly any sequence of unicode characters is
-   * valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of this object. Nearly any sequence of unicode
+   * characters is valid. See
+   * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -262,8 +262,8 @@ public com.google.protobuf.ByteString getEtagBytes() {
    *
    *
    * <pre>
-   * Immutable. The content generation of this object. Used for object versioning.
-   * Attempting to set or update this field will result in a
+   * Immutable. The content generation of this object. Used for object
+   * versioning. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -282,12 +282,11 @@ public long getGeneration() {
    *
    *
    * <pre>
-   * Output only. The version of the metadata for this generation of this object. Used for
-   * preconditions and for detecting changes in metadata. A metageneration
-   * number is only meaningful in the context of a particular generation of a
-   * particular object.
-   * Attempting to set or update this field will result in a
-   * [FieldViolation][google.rpc.BadRequest.FieldViolation].
+   * Output only. The version of the metadata for this generation of this
+   * object. Used for preconditions and for detecting changes in metadata. A
+   * metageneration number is only meaningful in the context of a particular
+   * generation of a particular object. Attempting to set or update this field
+   * will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
    * <code>int64 metageneration = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -533,7 +532,7 @@ public com.google.protobuf.ByteString getCacheControlBytes() {
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -548,7 +547,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getAclList() {
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -564,7 +563,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getAclList() {
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -579,7 +578,7 @@ public int getAclCount() {
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -594,7 +593,7 @@ public com.google.storage.v2.ObjectAccessControl getAcl(int index) {
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -662,9 +661,9 @@ public com.google.protobuf.ByteString getContentLanguageBytes() {
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -681,9 +680,9 @@ public boolean hasDeleteTime() {
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -700,9 +699,9 @@ public com.google.protobuf.Timestamp getDeleteTime() {
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -830,9 +829,9 @@ public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
    *
    *
    * <pre>
-   * Output only. Number of underlying components that make up this object. Components are
-   * accumulated by compose operations.
-   * Attempting to set or update this field will result in a
+   * Output only. Number of underlying components that make up this object.
+   * Components are accumulated by compose operations. Attempting to set or
+   * update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -851,7 +850,8 @@ public int getComponentCount() {
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -868,7 +868,8 @@ public boolean hasChecksums() {
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -887,7 +888,8 @@ public com.google.storage.v2.ObjectChecksums getChecksums() {
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -1026,8 +1028,8 @@ public com.google.protobuf.ByteString getKmsKeyBytes() {
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -1046,8 +1048,8 @@ public boolean hasUpdateStorageClassTime() {
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -1068,8 +1070,8 @@ public com.google.protobuf.Timestamp getUpdateStorageClassTime() {
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -1327,8 +1329,8 @@ public boolean getEventBasedHold() {
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -1344,8 +1346,8 @@ public boolean hasOwner() {
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -1361,8 +1363,8 @@ public com.google.storage.v2.Owner getOwner() {
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -2565,9 +2567,9 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Immutable. The name of this object. Nearly any sequence of unicode characters is
-     * valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of this object. Nearly any sequence of unicode
+     * characters is valid. See
+     * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2593,9 +2595,9 @@ public java.lang.String getName() {
      *
      *
      * <pre>
-     * Immutable. The name of this object. Nearly any sequence of unicode characters is
-     * valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of this object. Nearly any sequence of unicode
+     * characters is valid. See
+     * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2621,9 +2623,9 @@ public com.google.protobuf.ByteString getNameBytes() {
      *
      *
      * <pre>
-     * Immutable. The name of this object. Nearly any sequence of unicode characters is
-     * valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of this object. Nearly any sequence of unicode
+     * characters is valid. See
+     * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2648,9 +2650,9 @@ public Builder setName(java.lang.String value) {
      *
      *
      * <pre>
-     * Immutable. The name of this object. Nearly any sequence of unicode characters is
-     * valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of this object. Nearly any sequence of unicode
+     * characters is valid. See
+     * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2671,9 +2673,9 @@ public Builder clearName() {
      *
      *
      * <pre>
-     * Immutable. The name of this object. Nearly any sequence of unicode characters is
-     * valid. See
-     * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * Immutable. The name of this object. Nearly any sequence of unicode
+     * characters is valid. See
+     * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2938,8 +2940,8 @@ public Builder setEtagBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Immutable. The content generation of this object. Used for object versioning.
-     * Attempting to set or update this field will result in a
+     * Immutable. The content generation of this object. Used for object
+     * versioning. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -2955,8 +2957,8 @@ public long getGeneration() {
      *
      *
      * <pre>
-     * Immutable. The content generation of this object. Used for object versioning.
-     * Attempting to set or update this field will result in a
+     * Immutable. The content generation of this object. Used for object
+     * versioning. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -2975,8 +2977,8 @@ public Builder setGeneration(long value) {
      *
      *
      * <pre>
-     * Immutable. The content generation of this object. Used for object versioning.
-     * Attempting to set or update this field will result in a
+     * Immutable. The content generation of this object. Used for object
+     * versioning. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -2996,12 +2998,11 @@ public Builder clearGeneration() {
      *
      *
      * <pre>
-     * Output only. The version of the metadata for this generation of this object. Used for
-     * preconditions and for detecting changes in metadata. A metageneration
-     * number is only meaningful in the context of a particular generation of a
-     * particular object.
-     * Attempting to set or update this field will result in a
-     * [FieldViolation][google.rpc.BadRequest.FieldViolation].
+     * Output only. The version of the metadata for this generation of this
+     * object. Used for preconditions and for detecting changes in metadata. A
+     * metageneration number is only meaningful in the context of a particular
+     * generation of a particular object. Attempting to set or update this field
+     * will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
      * <code>int64 metageneration = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -3016,12 +3017,11 @@ public long getMetageneration() {
      *
      *
      * <pre>
-     * Output only. The version of the metadata for this generation of this object. Used for
-     * preconditions and for detecting changes in metadata. A metageneration
-     * number is only meaningful in the context of a particular generation of a
-     * particular object.
-     * Attempting to set or update this field will result in a
-     * [FieldViolation][google.rpc.BadRequest.FieldViolation].
+     * Output only. The version of the metadata for this generation of this
+     * object. Used for preconditions and for detecting changes in metadata. A
+     * metageneration number is only meaningful in the context of a particular
+     * generation of a particular object. Attempting to set or update this field
+     * will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
      * <code>int64 metageneration = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -3039,12 +3039,11 @@ public Builder setMetageneration(long value) {
      *
      *
      * <pre>
-     * Output only. The version of the metadata for this generation of this object. Used for
-     * preconditions and for detecting changes in metadata. A metageneration
-     * number is only meaningful in the context of a particular generation of a
-     * particular object.
-     * Attempting to set or update this field will result in a
-     * [FieldViolation][google.rpc.BadRequest.FieldViolation].
+     * Output only. The version of the metadata for this generation of this
+     * object. Used for preconditions and for detecting changes in metadata. A
+     * metageneration number is only meaningful in the context of a particular
+     * generation of a particular object. Attempting to set or update this field
+     * will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
      * <code>int64 metageneration = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -3589,7 +3588,7 @@ private void ensureAclIsMutable() {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3607,7 +3606,7 @@ public java.util.List<com.google.storage.v2.ObjectAccessControl> getAclList() {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3625,7 +3624,7 @@ public int getAclCount() {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3643,7 +3642,7 @@ public com.google.storage.v2.ObjectAccessControl getAcl(int index) {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3667,7 +3666,7 @@ public Builder setAcl(int index, com.google.storage.v2.ObjectAccessControl value
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3689,7 +3688,7 @@ public Builder setAcl(
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3713,7 +3712,7 @@ public Builder addAcl(com.google.storage.v2.ObjectAccessControl value) {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3737,7 +3736,7 @@ public Builder addAcl(int index, com.google.storage.v2.ObjectAccessControl value
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3758,7 +3757,7 @@ public Builder addAcl(com.google.storage.v2.ObjectAccessControl.Builder builderF
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3780,7 +3779,7 @@ public Builder addAcl(
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3802,7 +3801,7 @@ public Builder addAllAcl(
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3823,7 +3822,7 @@ public Builder clearAcl() {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3844,7 +3843,7 @@ public Builder removeAcl(int index) {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3858,7 +3857,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder getAclBuilder(int index
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3876,7 +3875,7 @@ public com.google.storage.v2.ObjectAccessControlOrBuilder getAclOrBuilder(int in
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3895,7 +3894,7 @@ public com.google.storage.v2.ObjectAccessControlOrBuilder getAclOrBuilder(int in
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3910,7 +3909,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder addAclBuilder() {
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -3925,7 +3924,7 @@ public com.google.storage.v2.ObjectAccessControl.Builder addAclBuilder(int index
      *
      * <pre>
      * Access controls on the object.
-     * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+     * If iam_config.uniform_bucket_level_access is enabled on the parent
      * bucket, requests to set, read, or modify acl is an error.
      * </pre>
      *
@@ -4073,9 +4072,9 @@ public Builder setContentLanguageBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4092,9 +4091,9 @@ public boolean hasDeleteTime() {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4117,9 +4116,9 @@ public com.google.protobuf.Timestamp getDeleteTime() {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4144,9 +4143,9 @@ public Builder setDeleteTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4168,9 +4167,9 @@ public Builder setDeleteTime(com.google.protobuf.Timestamp.Builder builderForVal
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4197,9 +4196,9 @@ public Builder mergeDeleteTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4222,9 +4221,9 @@ public Builder clearDeleteTime() {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4241,9 +4240,9 @@ public com.google.protobuf.Timestamp.Builder getDeleteTimeBuilder() {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4264,9 +4263,9 @@ public com.google.protobuf.TimestampOrBuilder getDeleteTimeOrBuilder() {
      *
      *
      * <pre>
-     * Output only. The deletion time of the object. Will be returned if and only if this
-     * version of the object has been deleted.
-     * Attempting to set or update this field will result in a
+     * Output only. The deletion time of the object. Will be returned if and only
+     * if this version of the object has been deleted. Attempting to set or update
+     * this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4636,9 +4635,9 @@ public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
      *
      *
      * <pre>
-     * Output only. Number of underlying components that make up this object. Components are
-     * accumulated by compose operations.
-     * Attempting to set or update this field will result in a
+     * Output only. Number of underlying components that make up this object.
+     * Components are accumulated by compose operations. Attempting to set or
+     * update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4654,9 +4653,9 @@ public int getComponentCount() {
      *
      *
      * <pre>
-     * Output only. Number of underlying components that make up this object. Components are
-     * accumulated by compose operations.
-     * Attempting to set or update this field will result in a
+     * Output only. Number of underlying components that make up this object.
+     * Components are accumulated by compose operations. Attempting to set or
+     * update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4675,9 +4674,9 @@ public Builder setComponentCount(int value) {
      *
      *
      * <pre>
-     * Output only. Number of underlying components that make up this object. Components are
-     * accumulated by compose operations.
-     * Attempting to set or update this field will result in a
+     * Output only. Number of underlying components that make up this object.
+     * Components are accumulated by compose operations. Attempting to set or
+     * update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -4702,7 +4701,8 @@ public Builder clearComponentCount() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4718,7 +4718,8 @@ public boolean hasChecksums() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4740,7 +4741,8 @@ public com.google.storage.v2.ObjectChecksums getChecksums() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4764,7 +4766,8 @@ public Builder setChecksums(com.google.storage.v2.ObjectChecksums value) {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4785,7 +4788,8 @@ public Builder setChecksums(com.google.storage.v2.ObjectChecksums.Builder builde
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4813,7 +4817,8 @@ public Builder mergeChecksums(com.google.storage.v2.ObjectChecksums value) {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4835,7 +4840,8 @@ public Builder clearChecksums() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4851,7 +4857,8 @@ public com.google.storage.v2.ObjectChecksums.Builder getChecksumsBuilder() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -4871,7 +4878,8 @@ public com.google.storage.v2.ObjectChecksumsOrBuilder getChecksumsOrBuilder() {
      *
      *
      * <pre>
-     * Output only. Hashes for the data part of this object.
+     * Output only. Hashes for the data part of this object. This field is used
+     * for output only and will be silently ignored if provided in requests.
      * </pre>
      *
      * <code>
@@ -5280,8 +5288,8 @@ public Builder setKmsKeyBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5299,8 +5307,8 @@ public boolean hasUpdateStorageClassTime() {
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5324,8 +5332,8 @@ public com.google.protobuf.Timestamp getUpdateStorageClassTime() {
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5351,8 +5359,8 @@ public Builder setUpdateStorageClassTime(com.google.protobuf.Timestamp value) {
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5376,8 +5384,8 @@ public Builder setUpdateStorageClassTime(
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5407,8 +5415,8 @@ public Builder mergeUpdateStorageClassTime(com.google.protobuf.Timestamp value)
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5432,8 +5440,8 @@ public Builder clearUpdateStorageClassTime() {
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5451,8 +5459,8 @@ public com.google.protobuf.Timestamp.Builder getUpdateStorageClassTimeBuilder()
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -5474,8 +5482,8 @@ public com.google.protobuf.TimestampOrBuilder getUpdateStorageClassTimeOrBuilder
      *
      *
      * <pre>
-     * Output only. The time at which the object's storage class was last changed. When the
-     * object is initially created, it will be set to time_created.
+     * Output only. The time at which the object's storage class was last changed.
+     * When the object is initially created, it will be set to time_created.
      * Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
@@ -6076,8 +6084,8 @@ public Builder clearEventBasedHold() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6093,8 +6101,8 @@ public boolean hasOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6114,8 +6122,8 @@ public com.google.storage.v2.Owner getOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6139,8 +6147,8 @@ public Builder setOwner(com.google.storage.v2.Owner value) {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6161,8 +6169,8 @@ public Builder setOwner(com.google.storage.v2.Owner.Builder builderForValue) {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6187,8 +6195,8 @@ public Builder mergeOwner(com.google.storage.v2.Owner value) {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6210,8 +6218,8 @@ public Builder clearOwner() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6227,8 +6235,8 @@ public com.google.storage.v2.Owner.Builder getOwnerBuilder() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. Attempting to set or update this field will result in a
      * [FieldViolation][google.rpc.BadRequest.FieldViolation].
      * </pre>
      *
@@ -6246,8 +6254,8 @@ public com.google.storage.v2.OwnerOrBuilder getOwnerOrBuilder() {
      *
      *
      * <pre>
-     * Output only. The owner of the object. This will always be the uploader of the object.
-     * Attempting to set or update this field will result in a
+     * Output only. The owner of the object. This will always be the uploader of
+     * the object. 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/ObjectAccessControl.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControl.java
index db4ad96ee..213507257 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControl.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControl.java
@@ -261,8 +261,8 @@ public com.google.protobuf.ByteString getEntityBytes() {
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -285,8 +285,8 @@ public java.lang.String getEntityAlt() {
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1481,8 +1481,8 @@ public Builder setEntityBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1504,8 +1504,8 @@ public java.lang.String getEntityAlt() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1527,8 +1527,8 @@ public com.google.protobuf.ByteString getEntityAltBytes() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1549,8 +1549,8 @@ public Builder setEntityAlt(java.lang.String value) {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -1567,8 +1567,8 @@ public Builder clearEntityAlt() {
      *
      *
      * <pre>
-     * Output only. The alternative entity format, if exists. For project entities,
-     * `project-{team}-{projectid}` format will be returned on response.
+     * Output only. The alternative entity format, if exists. For project
+     * entities, `project-{team}-{projectid}` format will be returned on response.
      * </pre>
      *
      * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControlOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControlOrBuilder.java
index f5be8ac45..20ee2c6a3 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControlOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/ObjectAccessControlOrBuilder.java
@@ -136,8 +136,8 @@ public interface ObjectAccessControlOrBuilder
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -149,8 +149,8 @@ public interface ObjectAccessControlOrBuilder
    *
    *
    * <pre>
-   * Output only. The alternative entity format, if exists. For project entities,
-   * `project-{team}-{projectid}` format will be returned on response.
+   * Output only. The alternative entity format, if exists. For project
+   * entities, `project-{team}-{projectid}` format will be returned on response.
    * </pre>
    *
    * <code>string entity_alt = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
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 4546815fe..0e22fd60d 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
@@ -27,9 +27,9 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of this object. Nearly any sequence of unicode characters is
-   * valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of this object. Nearly any sequence of unicode
+   * characters is valid. See
+   * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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 ObjectOrBuilder
    *
    *
    * <pre>
-   * Immutable. The name of this object. Nearly any sequence of unicode characters is
-   * valid. See
-   * [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * Immutable. The name of this object. Nearly any sequence of unicode
+   * characters is valid. See
+   * [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -124,8 +124,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Immutable. The content generation of this object. Used for object versioning.
-   * Attempting to set or update this field will result in a
+   * Immutable. The content generation of this object. Used for object
+   * versioning. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -139,12 +139,11 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The version of the metadata for this generation of this object. Used for
-   * preconditions and for detecting changes in metadata. A metageneration
-   * number is only meaningful in the context of a particular generation of a
-   * particular object.
-   * Attempting to set or update this field will result in a
-   * [FieldViolation][google.rpc.BadRequest.FieldViolation].
+   * Output only. The version of the metadata for this generation of this
+   * object. Used for preconditions and for detecting changes in metadata. A
+   * metageneration number is only meaningful in the context of a particular
+   * generation of a particular object. Attempting to set or update this field
+   * will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
    * <code>int64 metageneration = 4 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
@@ -284,7 +283,7 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -296,7 +295,7 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -308,7 +307,7 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -320,7 +319,7 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -333,7 +332,7 @@ public interface ObjectOrBuilder
    *
    * <pre>
    * Access controls on the object.
-   * If iamConfig.uniformBucketLevelAccess is enabled on the parent
+   * If iam_config.uniform_bucket_level_access is enabled on the parent
    * bucket, requests to set, read, or modify acl is an error.
    * </pre>
    *
@@ -372,9 +371,9 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -388,9 +387,9 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -404,9 +403,9 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The deletion time of the object. Will be returned if and only if this
-   * version of the object has been deleted.
-   * Attempting to set or update this field will result in a
+   * Output only. The deletion time of the object. Will be returned if and only
+   * if this version of the object has been deleted. Attempting to set or update
+   * this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -494,9 +493,9 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. Number of underlying components that make up this object. Components are
-   * accumulated by compose operations.
-   * Attempting to set or update this field will result in a
+   * Output only. Number of underlying components that make up this object.
+   * Components are accumulated by compose operations. Attempting to set or
+   * update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -510,7 +509,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -524,7 +524,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -538,7 +539,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. Hashes for the data part of this object.
+   * Output only. Hashes for the data part of this object. This field is used
+   * for output only and will be silently ignored if provided in requests.
    * </pre>
    *
    * <code>
@@ -637,8 +639,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -654,8 +656,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -671,8 +673,8 @@ public interface ObjectOrBuilder
    *
    *
    * <pre>
-   * Output only. The time at which the object's storage class was last changed. When the
-   * object is initially created, it will be set to time_created.
+   * Output only. The time at which the object's storage class was last changed.
+   * When the object is initially created, it will be set to time_created.
    * Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
@@ -859,8 +861,8 @@ java.lang.String getMetadataOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -873,8 +875,8 @@ java.lang.String getMetadataOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. Attempting to set or update this field will result in a
    * [FieldViolation][google.rpc.BadRequest.FieldViolation].
    * </pre>
    *
@@ -887,8 +889,8 @@ java.lang.String getMetadataOrDefault(
    *
    *
    * <pre>
-   * Output only. The owner of the object. This will always be the uploader of the object.
-   * Attempting to set or update this field will result in a
+   * Output only. The owner of the object. This will always be the uploader of
+   * the object. 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/QueryWriteStatusRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequest.java
index 9e30af475..dfd15569c 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequest.java
@@ -73,8 +73,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The name of the resume token for the object whose write status is being
-   * requested.
+   * Required. The name of the resume token for the object whose write status is
+   * being requested.
    * </pre>
    *
    * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -97,8 +97,8 @@ public java.lang.String getUploadId() {
    *
    *
    * <pre>
-   * Required. The name of the resume token for the object whose write status is being
-   * requested.
+   * Required. The name of the resume token for the object whose write status is
+   * being requested.
    * </pre>
    *
    * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -539,8 +539,8 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The name of the resume token for the object whose write status is being
-     * requested.
+     * Required. The name of the resume token for the object whose write status is
+     * being requested.
      * </pre>
      *
      * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -562,8 +562,8 @@ public java.lang.String getUploadId() {
      *
      *
      * <pre>
-     * Required. The name of the resume token for the object whose write status is being
-     * requested.
+     * Required. The name of the resume token for the object whose write status is
+     * being requested.
      * </pre>
      *
      * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -585,8 +585,8 @@ public com.google.protobuf.ByteString getUploadIdBytes() {
      *
      *
      * <pre>
-     * Required. The name of the resume token for the object whose write status is being
-     * requested.
+     * Required. The name of the resume token for the object whose write status is
+     * being requested.
      * </pre>
      *
      * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -607,8 +607,8 @@ public Builder setUploadId(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. The name of the resume token for the object whose write status is being
-     * requested.
+     * Required. The name of the resume token for the object whose write status is
+     * being requested.
      * </pre>
      *
      * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -625,8 +625,8 @@ public Builder clearUploadId() {
      *
      *
      * <pre>
-     * Required. The name of the resume token for the object whose write status is being
-     * requested.
+     * Required. The name of the resume token for the object whose write status is
+     * being requested.
      * </pre>
      *
      * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequestOrBuilder.java
index 09641bb1e..f56814f69 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/QueryWriteStatusRequestOrBuilder.java
@@ -27,8 +27,8 @@ public interface QueryWriteStatusRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The name of the resume token for the object whose write status is being
-   * requested.
+   * Required. The name of the resume token for the object whose write status is
+   * being requested.
    * </pre>
    *
    * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
@@ -40,8 +40,8 @@ public interface QueryWriteStatusRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The name of the resume token for the object whose write status is being
-   * requested.
+   * Required. The name of the resume token for the object whose write status is
+   * being requested.
    * </pre>
    *
    * <code>string upload_id = 1 [(.google.api.field_behavior) = REQUIRED];</code>
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 7a3faf6cf..6d5c8b7c5 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
@@ -92,7 +92,7 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    * <pre>
    * Required. Immutable. The name of the destination object.
    * See the
-   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -123,7 +123,7 @@ public java.lang.String getDestinationName() {
    * <pre>
    * Required. Immutable. The name of the destination object.
    * See the
-   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -155,7 +155,8 @@ public com.google.protobuf.ByteString getDestinationNameBytes() {
    *
    *
    * <pre>
-   * Required. Immutable. The name of the bucket containing the destination object.
+   * Required. Immutable. The name of the bucket containing the destination
+   * object.
    * </pre>
    *
    * <code>
@@ -180,7 +181,8 @@ public java.lang.String getDestinationBucket() {
    *
    *
    * <pre>
-   * Required. Immutable. The name of the bucket containing the destination object.
+   * Required. Immutable. The name of the bucket containing the destination
+   * object.
    * </pre>
    *
    * <code>
@@ -1001,6 +1003,57 @@ public com.google.storage.v2.CommonObjectRequestParams getCommonObjectRequestPar
     return getCommonObjectRequestParams();
   }
 
+  public static final int OBJECT_CHECKSUMS_FIELD_NUMBER = 29;
+  private com.google.storage.v2.ObjectChecksums objectChecksums_;
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  @java.lang.Override
+  public boolean hasObjectChecksums() {
+    return objectChecksums_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   *
+   * @return The objectChecksums.
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+    return objectChecksums_ == null
+        ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+        : objectChecksums_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+    return getObjectChecksums();
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -1082,6 +1135,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(destinationPredefinedAcl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 28, destinationPredefinedAcl_);
     }
+    if (objectChecksums_ != null) {
+      output.writeMessage(29, getObjectChecksums());
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -1169,6 +1225,9 @@ public int getSerializedSize() {
       size +=
           com.google.protobuf.GeneratedMessageV3.computeStringSize(28, destinationPredefinedAcl_);
     }
+    if (objectChecksums_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(29, getObjectChecksums());
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -1243,6 +1302,10 @@ public boolean equals(final java.lang.Object obj) {
       if (!getCommonObjectRequestParams().equals(other.getCommonObjectRequestParams()))
         return false;
     }
+    if (hasObjectChecksums() != other.hasObjectChecksums()) return false;
+    if (hasObjectChecksums()) {
+      if (!getObjectChecksums().equals(other.getObjectChecksums())) return false;
+    }
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -1319,6 +1382,10 @@ public int hashCode() {
       hash = (37 * hash) + COMMON_OBJECT_REQUEST_PARAMS_FIELD_NUMBER;
       hash = (53 * hash) + getCommonObjectRequestParams().hashCode();
     }
+    if (hasObjectChecksums()) {
+      hash = (37 * hash) + OBJECT_CHECKSUMS_FIELD_NUMBER;
+      hash = (53 * hash) + getObjectChecksums().hashCode();
+    }
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -1516,6 +1583,12 @@ public Builder clear() {
         commonObjectRequestParams_ = null;
         commonObjectRequestParamsBuilder_ = null;
       }
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
       return this;
     }
 
@@ -1599,6 +1672,11 @@ public com.google.storage.v2.RewriteObjectRequest buildPartial() {
       } else {
         result.commonObjectRequestParams_ = commonObjectRequestParamsBuilder_.build();
       }
+      if (objectChecksumsBuilder_ == null) {
+        result.objectChecksums_ = objectChecksums_;
+      } else {
+        result.objectChecksums_ = objectChecksumsBuilder_.build();
+      }
       result.bitField0_ = to_bitField0_;
       onBuilt();
       return result;
@@ -1723,6 +1801,9 @@ public Builder mergeFrom(com.google.storage.v2.RewriteObjectRequest other) {
       if (other.hasCommonObjectRequestParams()) {
         mergeCommonObjectRequestParams(other.getCommonObjectRequestParams());
       }
+      if (other.hasObjectChecksums()) {
+        mergeObjectChecksums(other.getObjectChecksums());
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -1882,6 +1963,12 @@ public Builder mergeFrom(
 
                 break;
               } // case 226
+            case 234:
+              {
+                input.readMessage(getObjectChecksumsFieldBuilder().getBuilder(), extensionRegistry);
+
+                break;
+              } // case 234
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -1908,7 +1995,7 @@ public Builder mergeFrom(
      * <pre>
      * Required. Immutable. The name of the destination object.
      * See the
-     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -1938,7 +2025,7 @@ public java.lang.String getDestinationName() {
      * <pre>
      * Required. Immutable. The name of the destination object.
      * See the
-     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -1968,7 +2055,7 @@ public com.google.protobuf.ByteString getDestinationNameBytes() {
      * <pre>
      * Required. Immutable. The name of the destination object.
      * See the
-     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -1997,7 +2084,7 @@ public Builder setDestinationName(java.lang.String value) {
      * <pre>
      * Required. Immutable. The name of the destination object.
      * See the
-     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2022,7 +2109,7 @@ public Builder clearDestinationName() {
      * <pre>
      * Required. Immutable. The name of the destination object.
      * See the
-     * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+     * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
      * 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
@@ -2052,7 +2139,8 @@ public Builder setDestinationNameBytes(com.google.protobuf.ByteString value) {
      *
      *
      * <pre>
-     * Required. Immutable. The name of the bucket containing the destination object.
+     * Required. Immutable. The name of the bucket containing the destination
+     * object.
      * </pre>
      *
      * <code>
@@ -2076,7 +2164,8 @@ public java.lang.String getDestinationBucket() {
      *
      *
      * <pre>
-     * Required. Immutable. The name of the bucket containing the destination object.
+     * Required. Immutable. The name of the bucket containing the destination
+     * object.
      * </pre>
      *
      * <code>
@@ -2100,7 +2189,8 @@ public com.google.protobuf.ByteString getDestinationBucketBytes() {
      *
      *
      * <pre>
-     * Required. Immutable. The name of the bucket containing the destination object.
+     * Required. Immutable. The name of the bucket containing the destination
+     * object.
      * </pre>
      *
      * <code>
@@ -2123,7 +2213,8 @@ public Builder setDestinationBucket(java.lang.String value) {
      *
      *
      * <pre>
-     * Required. Immutable. The name of the bucket containing the destination object.
+     * Required. Immutable. The name of the bucket containing the destination
+     * object.
      * </pre>
      *
      * <code>
@@ -2142,7 +2233,8 @@ public Builder clearDestinationBucket() {
      *
      *
      * <pre>
-     * Required. Immutable. The name of the bucket containing the destination object.
+     * Required. Immutable. The name of the bucket containing the destination
+     * object.
      * </pre>
      *
      * <code>
@@ -4114,6 +4206,201 @@ public Builder clearCommonObjectRequestParams() {
       return commonObjectRequestParamsBuilder_;
     }
 
+    private com.google.storage.v2.ObjectChecksums objectChecksums_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        objectChecksumsBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     *
+     * @return Whether the objectChecksums field is set.
+     */
+    public boolean hasObjectChecksums() {
+      return objectChecksumsBuilder_ != null || objectChecksums_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     *
+     * @return The objectChecksums.
+     */
+    public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      } else {
+        return objectChecksumsBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public Builder setObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        objectChecksums_ = value;
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public Builder setObjectChecksums(
+        com.google.storage.v2.ObjectChecksums.Builder builderForValue) {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = builderForValue.build();
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public Builder mergeObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (objectChecksums_ != null) {
+          objectChecksums_ =
+              com.google.storage.v2.ObjectChecksums.newBuilder(objectChecksums_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          objectChecksums_ = value;
+        }
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public Builder clearObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+        onChanged();
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public com.google.storage.v2.ObjectChecksums.Builder getObjectChecksumsBuilder() {
+
+      onChanged();
+      return getObjectChecksumsFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+      if (objectChecksumsBuilder_ != null) {
+        return objectChecksumsBuilder_.getMessageOrBuilder();
+      } else {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * destination object after rewriting.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        getObjectChecksumsFieldBuilder() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksumsBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.storage.v2.ObjectChecksums,
+                com.google.storage.v2.ObjectChecksums.Builder,
+                com.google.storage.v2.ObjectChecksumsOrBuilder>(
+                getObjectChecksums(), getParentForChildren(), isClean());
+        objectChecksums_ = null;
+      }
+      return objectChecksumsBuilder_;
+    }
+
     @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/RewriteObjectRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/RewriteObjectRequestOrBuilder.java
index 459e00eed..d6241479b 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
@@ -29,7 +29,7 @@ public interface RewriteObjectRequestOrBuilder
    * <pre>
    * Required. Immutable. The name of the destination object.
    * See the
-   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -49,7 +49,7 @@ public interface RewriteObjectRequestOrBuilder
    * <pre>
    * Required. Immutable. The name of the destination object.
    * See the
-   * [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+   * [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
    * 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
@@ -68,7 +68,8 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Required. Immutable. The name of the bucket containing the destination object.
+   * Required. Immutable. The name of the bucket containing the destination
+   * object.
    * </pre>
    *
    * <code>
@@ -82,7 +83,8 @@ public interface RewriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Required. Immutable. The name of the bucket containing the destination object.
+   * Required. Immutable. The name of the bucket containing the destination
+   * object.
    * </pre>
    *
    * <code>
@@ -638,4 +640,42 @@ public interface RewriteObjectRequestOrBuilder
    * <code>.google.storage.v2.CommonObjectRequestParams common_object_request_params = 19;</code>
    */
   com.google.storage.v2.CommonObjectRequestParamsOrBuilder getCommonObjectRequestParamsOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  boolean hasObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   *
+   * @return The objectChecksums.
+   */
+  com.google.storage.v2.ObjectChecksums getObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * destination object after rewriting.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 29;</code>
+   */
+  com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder();
 }
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequest.java
index 5b90a6374..4ee7e2f60 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequest.java
@@ -71,7 +71,8 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -88,7 +89,8 @@ public boolean hasWriteObjectSpec() {
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -107,7 +109,8 @@ public com.google.storage.v2.WriteObjectSpec getWriteObjectSpec() {
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -168,6 +171,63 @@ public com.google.storage.v2.CommonObjectRequestParams getCommonObjectRequestPar
     return getCommonObjectRequestParams();
   }
 
+  public static final int OBJECT_CHECKSUMS_FIELD_NUMBER = 5;
+  private com.google.storage.v2.ObjectChecksums objectChecksums_;
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  @java.lang.Override
+  public boolean hasObjectChecksums() {
+    return objectChecksums_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   *
+   * @return The objectChecksums.
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+    return objectChecksums_ == null
+        ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+        : objectChecksums_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   */
+  @java.lang.Override
+  public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+    return getObjectChecksums();
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -188,6 +248,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (commonObjectRequestParams_ != null) {
       output.writeMessage(3, getCommonObjectRequestParams());
     }
+    if (objectChecksums_ != null) {
+      output.writeMessage(5, getObjectChecksums());
+    }
     getUnknownFields().writeTo(output);
   }
 
@@ -205,6 +268,9 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               3, getCommonObjectRequestParams());
     }
+    if (objectChecksums_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, getObjectChecksums());
+    }
     size += getUnknownFields().getSerializedSize();
     memoizedSize = size;
     return size;
@@ -230,6 +296,10 @@ public boolean equals(final java.lang.Object obj) {
       if (!getCommonObjectRequestParams().equals(other.getCommonObjectRequestParams()))
         return false;
     }
+    if (hasObjectChecksums() != other.hasObjectChecksums()) return false;
+    if (hasObjectChecksums()) {
+      if (!getObjectChecksums().equals(other.getObjectChecksums())) return false;
+    }
     if (!getUnknownFields().equals(other.getUnknownFields())) return false;
     return true;
   }
@@ -249,6 +319,10 @@ public int hashCode() {
       hash = (37 * hash) + COMMON_OBJECT_REQUEST_PARAMS_FIELD_NUMBER;
       hash = (53 * hash) + getCommonObjectRequestParams().hashCode();
     }
+    if (hasObjectChecksums()) {
+      hash = (37 * hash) + OBJECT_CHECKSUMS_FIELD_NUMBER;
+      hash = (53 * hash) + getObjectChecksums().hashCode();
+    }
     hash = (29 * hash) + getUnknownFields().hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -399,6 +473,12 @@ public Builder clear() {
         commonObjectRequestParams_ = null;
         commonObjectRequestParamsBuilder_ = null;
       }
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
       return this;
     }
 
@@ -436,6 +516,11 @@ public com.google.storage.v2.StartResumableWriteRequest buildPartial() {
       } else {
         result.commonObjectRequestParams_ = commonObjectRequestParamsBuilder_.build();
       }
+      if (objectChecksumsBuilder_ == null) {
+        result.objectChecksums_ = objectChecksums_;
+      } else {
+        result.objectChecksums_ = objectChecksumsBuilder_.build();
+      }
       onBuilt();
       return result;
     }
@@ -492,6 +577,9 @@ public Builder mergeFrom(com.google.storage.v2.StartResumableWriteRequest other)
       if (other.hasCommonObjectRequestParams()) {
         mergeCommonObjectRequestParams(other.getCommonObjectRequestParams());
       }
+      if (other.hasObjectChecksums()) {
+        mergeObjectChecksums(other.getObjectChecksums());
+      }
       this.mergeUnknownFields(other.getUnknownFields());
       onChanged();
       return this;
@@ -531,6 +619,12 @@ public Builder mergeFrom(
 
                 break;
               } // case 26
+            case 42:
+              {
+                input.readMessage(getObjectChecksumsFieldBuilder().getBuilder(), extensionRegistry);
+
+                break;
+              } // case 42
             default:
               {
                 if (!super.parseUnknownField(input, extensionRegistry, tag)) {
@@ -558,7 +652,8 @@ public Builder mergeFrom(
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -574,7 +669,8 @@ public boolean hasWriteObjectSpec() {
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -596,7 +692,8 @@ public com.google.storage.v2.WriteObjectSpec getWriteObjectSpec() {
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -620,7 +717,8 @@ public Builder setWriteObjectSpec(com.google.storage.v2.WriteObjectSpec value) {
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -642,7 +740,8 @@ public Builder setWriteObjectSpec(
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -670,7 +769,8 @@ public Builder mergeWriteObjectSpec(com.google.storage.v2.WriteObjectSpec value)
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -692,7 +792,8 @@ public Builder clearWriteObjectSpec() {
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -708,7 +809,8 @@ public com.google.storage.v2.WriteObjectSpec.Builder getWriteObjectSpecBuilder()
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -728,7 +830,8 @@ public com.google.storage.v2.WriteObjectSpecOrBuilder getWriteObjectSpecOrBuilde
      *
      *
      * <pre>
-     * Required. The destination bucket, object, and metadata, as well as any preconditions.
+     * Required. The destination bucket, object, and metadata, as well as any
+     * preconditions.
      * </pre>
      *
      * <code>
@@ -942,6 +1045,219 @@ public Builder clearCommonObjectRequestParams() {
       return commonObjectRequestParamsBuilder_;
     }
 
+    private com.google.storage.v2.ObjectChecksums objectChecksums_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        objectChecksumsBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     *
+     * @return Whether the objectChecksums field is set.
+     */
+    public boolean hasObjectChecksums() {
+      return objectChecksumsBuilder_ != null || objectChecksums_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     *
+     * @return The objectChecksums.
+     */
+    public com.google.storage.v2.ObjectChecksums getObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      } else {
+        return objectChecksumsBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public Builder setObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        objectChecksums_ = value;
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public Builder setObjectChecksums(
+        com.google.storage.v2.ObjectChecksums.Builder builderForValue) {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = builderForValue.build();
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public Builder mergeObjectChecksums(com.google.storage.v2.ObjectChecksums value) {
+      if (objectChecksumsBuilder_ == null) {
+        if (objectChecksums_ != null) {
+          objectChecksums_ =
+              com.google.storage.v2.ObjectChecksums.newBuilder(objectChecksums_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          objectChecksums_ = value;
+        }
+        onChanged();
+      } else {
+        objectChecksumsBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public Builder clearObjectChecksums() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksums_ = null;
+        onChanged();
+      } else {
+        objectChecksums_ = null;
+        objectChecksumsBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public com.google.storage.v2.ObjectChecksums.Builder getObjectChecksumsBuilder() {
+
+      onChanged();
+      return getObjectChecksumsFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    public com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder() {
+      if (objectChecksumsBuilder_ != null) {
+        return objectChecksumsBuilder_.getMessageOrBuilder();
+      } else {
+        return objectChecksums_ == null
+            ? com.google.storage.v2.ObjectChecksums.getDefaultInstance()
+            : objectChecksums_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The checksums of the complete object. This will be used to validate the
+     * uploaded object. For each upload, object_checksums can be provided with
+     * either StartResumableWriteRequest or the WriteObjectRequest with
+     * finish_write set to `true`.
+     * </pre>
+     *
+     * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.storage.v2.ObjectChecksums,
+            com.google.storage.v2.ObjectChecksums.Builder,
+            com.google.storage.v2.ObjectChecksumsOrBuilder>
+        getObjectChecksumsFieldBuilder() {
+      if (objectChecksumsBuilder_ == null) {
+        objectChecksumsBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.storage.v2.ObjectChecksums,
+                com.google.storage.v2.ObjectChecksums.Builder,
+                com.google.storage.v2.ObjectChecksumsOrBuilder>(
+                getObjectChecksums(), getParentForChildren(), isClean());
+        objectChecksums_ = null;
+      }
+      return objectChecksumsBuilder_;
+    }
+
     @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/StartResumableWriteRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequestOrBuilder.java
index a628130b1..fb2c88680 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StartResumableWriteRequestOrBuilder.java
@@ -27,7 +27,8 @@ public interface StartResumableWriteRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -41,7 +42,8 @@ public interface StartResumableWriteRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -55,7 +57,8 @@ public interface StartResumableWriteRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The destination bucket, object, and metadata, as well as any preconditions.
+   * Required. The destination bucket, object, and metadata, as well as any
+   * preconditions.
    * </pre>
    *
    * <code>
@@ -98,4 +101,48 @@ public interface StartResumableWriteRequestOrBuilder
    * <code>.google.storage.v2.CommonObjectRequestParams common_object_request_params = 3;</code>
    */
   com.google.storage.v2.CommonObjectRequestParamsOrBuilder getCommonObjectRequestParamsOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   *
+   * @return Whether the objectChecksums field is set.
+   */
+  boolean hasObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   *
+   * @return The objectChecksums.
+   */
+  com.google.storage.v2.ObjectChecksums getObjectChecksums();
+  /**
+   *
+   *
+   * <pre>
+   * The checksums of the complete object. This will be used to validate the
+   * uploaded object. For each upload, object_checksums can be provided with
+   * either StartResumableWriteRequest or the WriteObjectRequest with
+   * finish_write set to `true`.
+   * </pre>
+   *
+   * <code>.google.storage.v2.ObjectChecksums object_checksums = 5;</code>
+   */
+  com.google.storage.v2.ObjectChecksumsOrBuilder getObjectChecksumsOrBuilder();
 }
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 03b1ddf5b..6c9b1a378 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
@@ -337,533 +337,538 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "oogle/api/field_behavior.proto\032\031google/a"
           + "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\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"
-          + "\"\334\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.Bucket\022\026\n\tbucket_id\030\003 \001(\tB\003\340A\002"
-          + "\022\026\n\016predefined_acl\030\006 \001(\t\022%\n\035predefined_d"
-          + "efault_object_acl\030\007 \001(\t\"\322\001\n\022ListBucketsR"
-          + "equest\022C\n\006parent\030\001 \001(\tB3\340A\002\372A-\n+cloudres"
-          + "ourcemanager.googleapis.com/Project\022\021\n\tp"
-          + "age_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006pr"
-          + "efix\030\004 \001(\t\0222\n\tread_mask\030\005 \001(\0132\032.google.p"
-          + "rotobuf.FieldMaskH\000\210\001\001B\014\n\n_read_mask\"Z\n\023"
-          + "ListBucketsResponse\022*\n\007buckets\030\001 \003(\0132\031.g"
-          + "oogle.storage.v2.Bucket\022\027\n\017next_page_tok"
-          + "en\030\002 \001(\t\"\177\n LockBucketRetentionPolicyReq"
-          + "uest\0225\n\006bucket\030\001 \001(\tB%\340A\002\372A\037\n\035storage.go"
-          + "ogleapis.com/Bucket\022$\n\027if_metageneration"
-          + "_match\030\002 \001(\003B\003\340A\002\"\306\002\n\023UpdateBucketReques"
-          + "t\022.\n\006bucket\030\001 \001(\0132\031.google.storage.v2.Bu"
-          + "cketB\003\340A\002\022$\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\035pre"
-          + "defined_default_object_acl\030\t \001(\t\0224\n\013upda"
-          + "te_mask\030\006 \001(\0132\032.google.protobuf.FieldMas"
-          + "kB\003\340A\002B\032\n\030_if_metageneration_matchB\036\n\034_i"
-          + "f_metageneration_not_match\"V\n\031DeleteNoti"
-          + "ficationRequest\0229\n\004name\030\001 \001(\tB+\340A\002\372A%\n#s"
-          + "torage.googleapis.com/Notification\"M\n\026Ge"
-          + "tNotificationRequest\0223\n\004name\030\001 \001(\tB%\340A\002\372"
-          + "A\037\n\035storage.googleapis.com/Bucket\"\216\001\n\031Cr"
-          + "eateNotificationRequest\0225\n\006parent\030\001 \001(\tB"
-          + "%\340A\002\372A\037\022\035storage.googleapis.com/Bucket\022:"
-          + "\n\014notification\030\002 \001(\0132\037.google.storage.v2"
-          + ".NotificationB\003\340A\002\"x\n\030ListNotificationsR"
-          + "equest\0225\n\006parent\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_token\030\003 \001(\t\"l\n\031ListNotification"
-          + "sResponse\0226\n\rnotifications\030\001 \003(\0132\037.googl"
-          + "e.storage.v2.Notification\022\027\n\017next_page_t"
-          + "oken\030\002 \001(\t\"\267\005\n\024ComposeObjectRequest\0223\n\013d"
-          + "estination\030\001 \001(\0132\031.google.storage.v2.Obj"
-          + "ectB\003\340A\002\022L\n\016source_objects\030\002 \003(\01324.googl"
-          + "e.storage.v2.ComposeObjectRequest.Source"
-          + "Object\022\"\n\032destination_predefined_acl\030\t \001"
-          + "(\t\022 \n\023if_generation_match\030\004 \001(\003H\000\210\001\001\022$\n\027"
-          + "if_metageneration_match\030\005 \001(\003H\001\210\001\001\0227\n\007km"
-          + "s_key\030\006 \001(\tB&\372A#\n!cloudkms.googleapis.co"
-          + "m/CryptoKey\022R\n\034common_object_request_par"
-          + "ams\030\007 \001(\0132,.google.storage.v2.CommonObje"
-          + "ctRequestParams\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\024objec"
-          + "t_preconditions\030\003 \001(\0132H.google.storage.v"
-          + "2.ComposeObjectRequest.SourceObject.Obje"
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-          + "\n\023if_generation_match\030\001 \001(\003H\000\210\001\001B\026\n\024_if_"
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-          + "B\032\n\030_if_metageneration_match\"\257\003\n\023DeleteO"
-          + "bjectRequest\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n\006obj"
-          + "ect\030\002 \001(\tB\003\340A\002\022\022\n\ngeneration\030\004 \001(\003\022 \n\023if"
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-          + "eration_match\030\007 \001(\003H\002\210\001\001\022(\n\033if_metagener"
-          + "ation_not_match\030\010 \001(\003H\003\210\001\001\022R\n\034common_obj"
-          + "ect_request_params\030\n \001(\0132,.google.storag"
-          + "e.v2.CommonObjectRequestParamsB\026\n\024_if_ge"
-          + "neration_matchB\032\n\030_if_generation_not_mat"
-          + "chB\032\n\030_if_metageneration_matchB\036\n\034_if_me"
-          + "tageneration_not_match\"5\n\033CancelResumabl"
-          + "eWriteRequest\022\026\n\tupload_id\030\001 \001(\tB\003\340A\002\"\036\n"
-          + "\034CancelResumableWriteResponse\"\230\004\n\021ReadOb"
-          + "jectRequest\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n\006obje"
-          + "ct\030\002 \001(\tB\003\340A\002\022\022\n\ngeneration\030\003 \001(\003\022\023\n\013rea"
-          + "d_offset\030\004 \001(\003\022\022\n\nread_limit\030\005 \001(\003\022 \n\023if"
-          + "_generation_match\030\006 \001(\003H\000\210\001\001\022$\n\027if_gener"
-          + "ation_not_match\030\007 \001(\003H\001\210\001\001\022$\n\027if_metagen"
-          + "eration_match\030\010 \001(\003H\002\210\001\001\022(\n\033if_metagener"
-          + "ation_not_match\030\t \001(\003H\003\210\001\001\022R\n\034common_obj"
-          + "ect_request_params\030\n \001(\0132,.google.storag"
-          + "e.v2.CommonObjectRequestParams\0222\n\tread_m"
-          + "ask\030\014 \001(\0132\032.google.protobuf.FieldMaskH\004\210"
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-          + "\001 \001(\tB\003\340A\002\022\023\n\006object\030\002 \001(\tB\003\340A\002\022\022\n\ngener"
-          + "ation\030\003 \001(\003\022 \n\023if_generation_match\030\004 \001(\003"
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-          + "\210\001\001\022R\n\034common_object_request_params\030\010 \001("
+          + "gle/iam/v1/policy.proto\032\036google/protobuf"
+          + "/duration.proto\032\033google/protobuf/empty.p"
+          + "roto\032 google/protobuf/field_mask.proto\032\037"
+          + "google/protobuf/timestamp.proto\032\026google/"
+          + "type/date.proto\"\326\001\n\023DeleteBucketRequest\022"
+          + "3\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035storage.googleapi"
+          + "s.com/Bucket\022$\n\027if_metageneration_match\030"
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+          + "B\036\n\034_if_metageneration_not_match\"\225\002\n\020Get"
+          + "BucketRequest\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035sto"
+          + "rage.googleapis.com/Bucket\022$\n\027if_metagen"
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+          + "\n\030_if_metageneration_matchB\036\n\034_if_metage"
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+          + "ateBucketRequest\022C\n\006parent\030\001 \001(\tB3\340A\002\372A-"
+          + "\n+cloudresourcemanager.googleapis.com/Pr"
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+          + "2.Bucket\022\026\n\tbucket_id\030\003 \001(\tB\003\340A\002\022\026\n\016pred"
+          + "efined_acl\030\006 \001(\t\022%\n\035predefined_default_o"
+          + "bject_acl\030\007 \001(\t\"\322\001\n\022ListBucketsRequest\022C"
+          + "\n\006parent\030\001 \001(\tB3\340A\002\372A-\n+cloudresourceman"
+          + "ager.googleapis.com/Project\022\021\n\tpage_size"
+          + "\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006prefix\030\004 \001"
+          + "(\t\0222\n\tread_mask\030\005 \001(\0132\032.google.protobuf."
+          + "FieldMaskH\000\210\001\001B\014\n\n_read_mask\"Z\n\023ListBuck"
+          + "etsResponse\022*\n\007buckets\030\001 \003(\0132\031.google.st"
+          + "orage.v2.Bucket\022\027\n\017next_page_token\030\002 \001(\t"
+          + "\"\177\n LockBucketRetentionPolicyRequest\0225\n\006"
+          + "bucket\030\001 \001(\tB%\340A\002\372A\037\n\035storage.googleapis"
+          + ".com/Bucket\022$\n\027if_metageneration_match\030\002"
+          + " \001(\003B\003\340A\002\"\306\002\n\023UpdateBucketRequest\022.\n\006buc"
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+          + "\002\022$\n\027if_metageneration_match\030\002 \001(\003H\000\210\001\001\022"
+          + "(\n\033if_metageneration_not_match\030\003 \001(\003H\001\210\001"
+          + "\001\022\026\n\016predefined_acl\030\010 \001(\t\022%\n\035predefined_"
+          + "default_object_acl\030\t \001(\t\0224\n\013update_mask\030"
+          + "\006 \001(\0132\032.google.protobuf.FieldMaskB\003\340A\002B\032"
+          + "\n\030_if_metageneration_matchB\036\n\034_if_metage"
+          + "neration_not_match\"V\n\031DeleteNotification"
+          + "Request\0229\n\004name\030\001 \001(\tB+\340A\002\372A%\n#storage.g"
+          + "oogleapis.com/Notification\"M\n\026GetNotific"
+          + "ationRequest\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035stor"
+          + "age.googleapis.com/Bucket\"\216\001\n\031CreateNoti"
+          + "ficationRequest\0225\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022"
+          + "\035storage.googleapis.com/Bucket\022:\n\014notifi"
+          + "cation\030\002 \001(\0132\037.google.storage.v2.Notific"
+          + "ationB\003\340A\002\"x\n\030ListNotificationsRequest\0225"
+          + "\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022\035storage.googleap"
+          + "is.com/Bucket\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage"
+          + "_token\030\003 \001(\t\"l\n\031ListNotificationsRespons"
+          + "e\0226\n\rnotifications\030\001 \003(\0132\037.google.storag"
+          + "e.v2.Notification\022\027\n\017next_page_token\030\002 \001"
+          + "(\t\"\365\005\n\024ComposeObjectRequest\0223\n\013destinati"
+          + "on\030\001 \001(\0132\031.google.storage.v2.ObjectB\003\340A\002"
+          + "\022L\n\016source_objects\030\002 \003(\01324.google.storag"
+          + "e.v2.ComposeObjectRequest.SourceObject\022\""
+          + "\n\032destination_predefined_acl\030\t \001(\t\022 \n\023if"
+          + "_generation_match\030\004 \001(\003H\000\210\001\001\022$\n\027if_metag"
+          + "eneration_match\030\005 \001(\003H\001\210\001\001\0227\n\007kms_key\030\006 "
+          + "\001(\tB&\372A#\n!cloudkms.googleapis.com/Crypto"
+          + "Key\022R\n\034common_object_request_params\030\007 \001("
           + "\0132,.google.storage.v2.CommonObjectReques"
-          + "tParams\0222\n\tread_mask\030\n \001(\0132\032.google.prot"
-          + "obuf.FieldMaskH\004\210\001\001B\026\n\024_if_generation_ma"
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-          + "n_not_matchB\014\n\n_read_mask\"\365\001\n\022ReadObject"
-          + "Response\022<\n\020checksummed_data\030\001 \001(\0132\".goo"
-          + "gle.storage.v2.ChecksummedData\022<\n\020object"
-          + "_checksums\030\002 \001(\0132\".google.storage.v2.Obj"
-          + "ectChecksums\0226\n\rcontent_range\030\003 \001(\0132\037.go"
-          + "ogle.storage.v2.ContentRange\022+\n\010metadata"
-          + "\030\004 \001(\0132\031.google.storage.v2.Object\"\215\003\n\017Wr"
-          + "iteObjectSpec\0220\n\010resource\030\001 \001(\0132\031.google"
-          + ".storage.v2.ObjectB\003\340A\002\022\026\n\016predefined_ac"
-          + "l\030\007 \001(\t\022 \n\023if_generation_match\030\003 \001(\003H\000\210\001"
-          + "\001\022$\n\027if_generation_not_match\030\004 \001(\003H\001\210\001\001\022"
-          + "$\n\027if_metageneration_match\030\005 \001(\003H\002\210\001\001\022(\n"
-          + "\033if_metageneration_not_match\030\006 \001(\003H\003\210\001\001\022"
-          + "\030\n\013object_size\030\010 \001(\003H\004\210\001\001B\026\n\024_if_generat"
-          + "ion_matchB\032\n\030_if_generation_not_matchB\032\n"
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-          + "iteObjectRequest\022\023\n\tupload_id\030\001 \001(\tH\000\022?\n"
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-          + "e.v2.WriteObjectSpecH\000\022\031\n\014write_offset\030\003"
-          + " \001(\003B\003\340A\002\022>\n\020checksummed_data\030\004 \001(\0132\".go"
-          + "ogle.storage.v2.ChecksummedDataH\001\022<\n\020obj"
-          + "ect_checksums\030\006 \001(\0132\".google.storage.v2."
-          + "ObjectChecksums\022\024\n\014finish_write\030\007 \001(\010\022R\n"
-          + "\034common_object_request_params\030\010 \001(\0132,.go"
-          + "ogle.storage.v2.CommonObjectRequestParam"
-          + "sB\017\n\rfirst_messageB\006\n\004data\"n\n\023WriteObjec"
-          + "tResponse\022\030\n\016persisted_size\030\001 \001(\003H\000\022-\n\010r"
-          + "esource\030\002 \001(\0132\031.google.storage.v2.Object"
-          + "H\000B\016\n\014write_status\"\305\002\n\022ListObjectsReques"
-          + "t\0225\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022\035storage.googl"
-          + "eapis.com/Bucket\022\021\n\tpage_size\030\002 \001(\005\022\022\n\np"
-          + "age_token\030\003 \001(\t\022\021\n\tdelimiter\030\004 \001(\t\022\"\n\032in"
-          + "clude_trailing_delimiter\030\005 \001(\010\022\016\n\006prefix"
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-          + "\001(\0132\032.google.protobuf.FieldMaskH\000\210\001\001\022\033\n\023"
-          + "lexicographic_start\030\n \001(\t\022\031\n\021lexicograph"
-          + "ic_end\030\013 \001(\tB\014\n\n_read_mask\"\205\001\n\027QueryWrit"
-          + "eStatusRequest\022\026\n\tupload_id\030\001 \001(\tB\003\340A\002\022R"
-          + "\n\034common_object_request_params\030\002 \001(\0132,.g"
-          + "oogle.storage.v2.CommonObjectRequestPara"
-          + "ms\"s\n\030QueryWriteStatusResponse\022\030\n\016persis"
-          + "ted_size\030\001 \001(\003H\000\022-\n\010resource\030\002 \001(\0132\031.goo"
-          + "gle.storage.v2.ObjectH\000B\016\n\014write_status\""
-          + "\310\t\n\024RewriteObjectRequest\022 \n\020destination_"
-          + "name\030\030 \001(\tB\006\340A\002\340A\005\022D\n\022destination_bucket"
-          + "\030\031 \001(\tB(\340A\002\340A\005\372A\037\n\035storage.googleapis.co"
-          + "m/Bucket\022C\n\023destination_kms_key\030\033 \001(\tB&\372"
-          + "A#\n!cloudkms.googleapis.com/CryptoKey\022.\n"
-          + "\013destination\030\001 \001(\0132\031.google.storage.v2.O"
-          + "bject\022\032\n\rsource_bucket\030\002 \001(\tB\003\340A\002\022\032\n\rsou"
-          + "rce_object\030\003 \001(\tB\003\340A\002\022\031\n\021source_generati"
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-          + "tion_match\030\007 \001(\003H\000\210\001\001\022$\n\027if_generation_n"
-          + "ot_match\030\010 \001(\003H\001\210\001\001\022$\n\027if_metageneration"
-          + "_match\030\t \001(\003H\002\210\001\001\022(\n\033if_metageneration_n"
-          + "ot_match\030\n \001(\003H\003\210\001\001\022\'\n\032if_source_generat"
-          + "ion_match\030\013 \001(\003H\004\210\001\001\022+\n\036if_source_genera"
-          + "tion_not_match\030\014 \001(\003H\005\210\001\001\022+\n\036if_source_m"
-          + "etageneration_match\030\r \001(\003H\006\210\001\001\022/\n\"if_sou"
-          + "rce_metageneration_not_match\030\016 \001(\003H\007\210\001\001\022"
-          + "$\n\034max_bytes_rewritten_per_call\030\017 \001(\003\022(\n"
-          + " copy_source_encryption_algorithm\030\020 \001(\t\022"
-          + "(\n copy_source_encryption_key_bytes\030\025 \001("
-          + "\014\022/\n\'copy_source_encryption_key_sha256_b"
-          + "ytes\030\026 \001(\014\022R\n\034common_object_request_para"
-          + "ms\030\023 \001(\0132,.google.storage.v2.CommonObjec"
-          + "tRequestParamsB\026\n\024_if_generation_matchB\032"
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-          + "_matchB\035\n\033_if_source_generation_matchB!\n"
-          + "\037_if_source_generation_not_matchB!\n\037_if_"
-          + "source_metageneration_matchB%\n#_if_sourc"
-          + "e_metageneration_not_match\"\227\001\n\017RewriteRe"
-          + "sponse\022\035\n\025total_bytes_rewritten\030\001 \001(\003\022\023\n"
-          + "\013object_size\030\002 \001(\003\022\014\n\004done\030\003 \001(\010\022\025\n\rrewr"
-          + "ite_token\030\004 \001(\t\022+\n\010resource\030\005 \001(\0132\031.goog"
-          + "le.storage.v2.Object\"\264\001\n\032StartResumableW"
-          + "riteRequest\022B\n\021write_object_spec\030\001 \001(\0132\""
-          + ".google.storage.v2.WriteObjectSpecB\003\340A\002\022"
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-          + "google.storage.v2.CommonObjectRequestPar"
-          + "ams\"0\n\033StartResumableWriteResponse\022\021\n\tup"
-          + "load_id\030\001 \001(\t\"\357\003\n\023UpdateObjectRequest\022.\n"
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-          + "B\003\340A\002\022 \n\023if_generation_match\030\002 \001(\003H\000\210\001\001\022"
-          + "$\n\027if_generation_not_match\030\003 \001(\003H\001\210\001\001\022$\n"
-          + "\027if_metageneration_match\030\004 \001(\003H\002\210\001\001\022(\n\033i"
-          + "f_metageneration_not_match\030\005 \001(\003H\003\210\001\001\022\026\n"
-          + "\016predefined_acl\030\n \001(\t\0224\n\013update_mask\030\007 \001"
-          + "(\0132\032.google.protobuf.FieldMaskB\003\340A\002\022R\n\034c"
-          + "ommon_object_request_params\030\010 \001(\0132,.goog"
-          + "le.storage.v2.CommonObjectRequestParamsB"
+          + "tParams\022<\n\020object_checksums\030\n \001(\0132\".goog"
+          + "le.storage.v2.ObjectChecksums\032\356\001\n\014Source"
+          + "Object\022\021\n\004name\030\001 \001(\tB\003\340A\002\022\022\n\ngeneration\030"
+          + "\002 \001(\003\022f\n\024object_preconditions\030\003 \001(\0132H.go"
+          + "ogle.storage.v2.ComposeObjectRequest.Sou"
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+          + "reconditions\022 \n\023if_generation_match\030\001 \001("
+          + "\003H\000\210\001\001B\026\n\024_if_generation_matchB\026\n\024_if_ge"
+          + "neration_matchB\032\n\030_if_metageneration_mat"
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+          + "on\030\004 \001(\003\022 \n\023if_generation_match\030\005 \001(\003H\000\210"
+          + "\001\001\022$\n\027if_generation_not_match\030\006 \001(\003H\001\210\001\001"
+          + "\022$\n\027if_metageneration_match\030\007 \001(\003H\002\210\001\001\022("
+          + "\n\033if_metageneration_not_match\030\010 \001(\003H\003\210\001\001"
+          + "\022R\n\034common_object_request_params\030\n \001(\0132,"
+          + ".google.storage.v2.CommonObjectRequestPa"
+          + "ramsB\026\n\024_if_generation_matchB\032\n\030_if_gene"
+          + "ration_not_matchB\032\n\030_if_metageneration_m"
+          + "atchB\036\n\034_if_metageneration_not_match\"5\n\033"
+          + "CancelResumableWriteRequest\022\026\n\tupload_id"
+          + "\030\001 \001(\tB\003\340A\002\"\036\n\034CancelResumableWriteRespo"
+          + "nse\"\230\004\n\021ReadObjectRequest\022\023\n\006bucket\030\001 \001("
+          + "\tB\003\340A\002\022\023\n\006object\030\002 \001(\tB\003\340A\002\022\022\n\ngeneratio"
+          + "n\030\003 \001(\003\022\023\n\013read_offset\030\004 \001(\003\022\022\n\nread_lim"
+          + "it\030\005 \001(\003\022 \n\023if_generation_match\030\006 \001(\003H\000\210"
+          + "\001\001\022$\n\027if_generation_not_match\030\007 \001(\003H\001\210\001\001"
+          + "\022$\n\027if_metageneration_match\030\010 \001(\003H\002\210\001\001\022("
+          + "\n\033if_metageneration_not_match\030\t \001(\003H\003\210\001\001"
+          + "\022R\n\034common_object_request_params\030\n \001(\0132,"
+          + ".google.storage.v2.CommonObjectRequestPa"
+          + "rams\0222\n\tread_mask\030\014 \001(\0132\032.google.protobu"
+          + "f.FieldMaskH\004\210\001\001B\026\n\024_if_generation_match"
+          + "B\032\n\030_if_generation_not_matchB\032\n\030_if_meta"
+          + "generation_matchB\036\n\034_if_metageneration_n"
+          + "ot_matchB\014\n\n_read_mask\"\356\003\n\020GetObjectRequ"
+          + "est\022\023\n\006bucket\030\001 \001(\tB\003\340A\002\022\023\n\006object\030\002 \001(\t"
+          + "B\003\340A\002\022\022\n\ngeneration\030\003 \001(\003\022 \n\023if_generati"
+          + "on_match\030\004 \001(\003H\000\210\001\001\022$\n\027if_generation_not"
+          + "_match\030\005 \001(\003H\001\210\001\001\022$\n\027if_metageneration_m"
+          + "atch\030\006 \001(\003H\002\210\001\001\022(\n\033if_metageneration_not"
+          + "_match\030\007 \001(\003H\003\210\001\001\022R\n\034common_object_reque"
+          + "st_params\030\010 \001(\0132,.google.storage.v2.Comm"
+          + "onObjectRequestParams\0222\n\tread_mask\030\n \001(\013"
+          + "2\032.google.protobuf.FieldMaskH\004\210\001\001B\026\n\024_if"
+          + "_generation_matchB\032\n\030_if_generation_not_"
+          + "matchB\032\n\030_if_metageneration_matchB\036\n\034_if"
+          + "_metageneration_not_matchB\014\n\n_read_mask\""
+          + "\365\001\n\022ReadObjectResponse\022<\n\020checksummed_da"
+          + "ta\030\001 \001(\0132\".google.storage.v2.Checksummed"
+          + "Data\022<\n\020object_checksums\030\002 \001(\0132\".google."
+          + "storage.v2.ObjectChecksums\0226\n\rcontent_ra"
+          + "nge\030\003 \001(\0132\037.google.storage.v2.ContentRan"
+          + "ge\022+\n\010metadata\030\004 \001(\0132\031.google.storage.v2"
+          + ".Object\"\215\003\n\017WriteObjectSpec\0220\n\010resource\030"
+          + "\001 \001(\0132\031.google.storage.v2.ObjectB\003\340A\002\022\026\n"
+          + "\016predefined_acl\030\007 \001(\t\022 \n\023if_generation_m"
+          + "atch\030\003 \001(\003H\000\210\001\001\022$\n\027if_generation_not_mat"
+          + "ch\030\004 \001(\003H\001\210\001\001\022$\n\027if_metageneration_match"
+          + "\030\005 \001(\003H\002\210\001\001\022(\n\033if_metageneration_not_mat"
+          + "ch\030\006 \001(\003H\003\210\001\001\022\030\n\013object_size\030\010 \001(\003H\004\210\001\001B"
           + "\026\n\024_if_generation_matchB\032\n\030_if_generatio"
           + "n_not_matchB\032\n\030_if_metageneration_matchB"
-          + "\036\n\034_if_metageneration_not_match\"`\n\030GetSe"
-          + "rviceAccountRequest\022D\n\007project\030\001 \001(\tB3\340A"
-          + "\002\372A-\n+cloudresourcemanager.googleapis.co"
-          + "m/Project\"\200\001\n\024CreateHmacKeyRequest\022D\n\007pr"
-          + "oject\030\001 \001(\tB3\340A\002\372A-\n+cloudresourcemanage"
-          + "r.googleapis.com/Project\022\"\n\025service_acco"
-          + "unt_email\030\002 \001(\tB\003\340A\002\"g\n\025CreateHmacKeyRes"
-          + "ponse\0224\n\010metadata\030\001 \001(\0132\".google.storage"
-          + ".v2.HmacKeyMetadata\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+"
-          + "cloudresourcemanager.googleapis.com/Proj"
-          + "ect\"q\n\021GetHmacKeyRequest\022\026\n\taccess_id\030\001 "
-          + "\001(\tB\003\340A\002\022D\n\007project\030\002 \001(\tB3\340A\002\372A-\n+cloud"
-          + "resourcemanager.googleapis.com/Project\"\274"
-          + "\001\n\023ListHmacKeysRequest\022D\n\007project\030\001 \001(\tB"
+          + "\036\n\034_if_metageneration_not_matchB\016\n\014_obje"
+          + "ct_size\"\206\003\n\022WriteObjectRequest\022\023\n\tupload"
+          + "_id\030\001 \001(\tH\000\022?\n\021write_object_spec\030\002 \001(\0132\""
+          + ".google.storage.v2.WriteObjectSpecH\000\022\031\n\014"
+          + "write_offset\030\003 \001(\003B\003\340A\002\022>\n\020checksummed_d"
+          + "ata\030\004 \001(\0132\".google.storage.v2.Checksumme"
+          + "dDataH\001\022<\n\020object_checksums\030\006 \001(\0132\".goog"
+          + "le.storage.v2.ObjectChecksums\022\024\n\014finish_"
+          + "write\030\007 \001(\010\022R\n\034common_object_request_par"
+          + "ams\030\010 \001(\0132,.google.storage.v2.CommonObje"
+          + "ctRequestParamsB\017\n\rfirst_messageB\006\n\004data"
+          + "\"n\n\023WriteObjectResponse\022\030\n\016persisted_siz"
+          + "e\030\001 \001(\003H\000\022-\n\010resource\030\002 \001(\0132\031.google.sto"
+          + "rage.v2.ObjectH\000B\016\n\014write_status\"\317\002\n\022Lis"
+          + "tObjectsRequest\0225\n\006parent\030\001 \001(\tB%\340A\002\372A\037\022"
+          + "\035storage.googleapis.com/Bucket\022\021\n\tpage_s"
+          + "ize\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\021\n\tdelimit"
+          + "er\030\004 \001(\t\022\"\n\032include_trailing_delimiter\030\005"
+          + " \001(\010\022\016\n\006prefix\030\006 \001(\t\022\020\n\010versions\030\007 \001(\010\0222"
+          + "\n\tread_mask\030\010 \001(\0132\032.google.protobuf.Fiel"
+          + "dMaskH\000\210\001\001\022 \n\023lexicographic_start\030\n \001(\tB"
+          + "\003\340A\001\022\036\n\021lexicographic_end\030\013 \001(\tB\003\340A\001B\014\n\n"
+          + "_read_mask\"\205\001\n\027QueryWriteStatusRequest\022\026"
+          + "\n\tupload_id\030\001 \001(\tB\003\340A\002\022R\n\034common_object_"
+          + "request_params\030\002 \001(\0132,.google.storage.v2"
+          + ".CommonObjectRequestParams\"s\n\030QueryWrite"
+          + "StatusResponse\022\030\n\016persisted_size\030\001 \001(\003H\000"
+          + "\022-\n\010resource\030\002 \001(\0132\031.google.storage.v2.O"
+          + "bjectH\000B\016\n\014write_status\"\206\n\n\024RewriteObjec"
+          + "tRequest\022 \n\020destination_name\030\030 \001(\tB\006\340A\002\340"
+          + "A\005\022D\n\022destination_bucket\030\031 \001(\tB(\340A\002\340A\005\372A"
+          + "\037\n\035storage.googleapis.com/Bucket\022C\n\023dest"
+          + "ination_kms_key\030\033 \001(\tB&\372A#\n!cloudkms.goo"
+          + "gleapis.com/CryptoKey\022.\n\013destination\030\001 \001"
+          + "(\0132\031.google.storage.v2.Object\022\032\n\rsource_"
+          + "bucket\030\002 \001(\tB\003\340A\002\022\032\n\rsource_object\030\003 \001(\t"
+          + "B\003\340A\002\022\031\n\021source_generation\030\004 \001(\003\022\025\n\rrewr"
+          + "ite_token\030\005 \001(\t\022\"\n\032destination_predefine"
+          + "d_acl\030\034 \001(\t\022 \n\023if_generation_match\030\007 \001(\003"
+          + "H\000\210\001\001\022$\n\027if_generation_not_match\030\010 \001(\003H\001"
+          + "\210\001\001\022$\n\027if_metageneration_match\030\t \001(\003H\002\210\001"
+          + "\001\022(\n\033if_metageneration_not_match\030\n \001(\003H\003"
+          + "\210\001\001\022\'\n\032if_source_generation_match\030\013 \001(\003H"
+          + "\004\210\001\001\022+\n\036if_source_generation_not_match\030\014"
+          + " \001(\003H\005\210\001\001\022+\n\036if_source_metageneration_ma"
+          + "tch\030\r \001(\003H\006\210\001\001\022/\n\"if_source_metagenerati"
+          + "on_not_match\030\016 \001(\003H\007\210\001\001\022$\n\034max_bytes_rew"
+          + "ritten_per_call\030\017 \001(\003\022(\n copy_source_enc"
+          + "ryption_algorithm\030\020 \001(\t\022(\n copy_source_e"
+          + "ncryption_key_bytes\030\025 \001(\014\022/\n\'copy_source"
+          + "_encryption_key_sha256_bytes\030\026 \001(\014\022R\n\034co"
+          + "mmon_object_request_params\030\023 \001(\0132,.googl"
+          + "e.storage.v2.CommonObjectRequestParams\022<"
+          + "\n\020object_checksums\030\035 \001(\0132\".google.storag"
+          + "e.v2.ObjectChecksumsB\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_matchB\035\n\033_if_source_generation_ma"
+          + "tchB!\n\037_if_source_generation_not_matchB!"
+          + "\n\037_if_source_metageneration_matchB%\n#_if"
+          + "_source_metageneration_not_match\"\227\001\n\017Rew"
+          + "riteResponse\022\035\n\025total_bytes_rewritten\030\001 "
+          + "\001(\003\022\023\n\013object_size\030\002 \001(\003\022\014\n\004done\030\003 \001(\010\022\025"
+          + "\n\rrewrite_token\030\004 \001(\t\022+\n\010resource\030\005 \001(\0132"
+          + "\031.google.storage.v2.Object\"\362\001\n\032StartResu"
+          + "mableWriteRequest\022B\n\021write_object_spec\030\001"
+          + " \001(\0132\".google.storage.v2.WriteObjectSpec"
+          + "B\003\340A\002\022R\n\034common_object_request_params\030\003 "
+          + "\001(\0132,.google.storage.v2.CommonObjectRequ"
+          + "estParams\022<\n\020object_checksums\030\005 \001(\0132\".go"
+          + "ogle.storage.v2.ObjectChecksums\"0\n\033Start"
+          + "ResumableWriteResponse\022\021\n\tupload_id\030\001 \001("
+          + "\t\"\357\003\n\023UpdateObjectRequest\022.\n\006object\030\001 \001("
+          + "\0132\031.google.storage.v2.ObjectB\003\340A\002\022 \n\023if_"
+          + "generation_match\030\002 \001(\003H\000\210\001\001\022$\n\027if_genera"
+          + "tion_not_match\030\003 \001(\003H\001\210\001\001\022$\n\027if_metagene"
+          + "ration_match\030\004 \001(\003H\002\210\001\001\022(\n\033if_metagenera"
+          + "tion_not_match\030\005 \001(\003H\003\210\001\001\022\026\n\016predefined_"
+          + "acl\030\n \001(\t\0224\n\013update_mask\030\007 \001(\0132\032.google."
+          + "protobuf.FieldMaskB\003\340A\002\022R\n\034common_object"
+          + "_request_params\030\010 \001(\0132,.google.storage.v"
+          + "2.CommonObjectRequestParamsB\026\n\024_if_gener"
+          + "ation_matchB\032\n\030_if_generation_not_matchB"
+          + "\032\n\030_if_metageneration_matchB\036\n\034_if_metag"
+          + "eneration_not_match\"`\n\030GetServiceAccount"
+          + "Request\022D\n\007project\030\001 \001(\tB3\340A\002\372A-\n+cloudr"
+          + "esourcemanager.googleapis.com/Project\"\200\001"
+          + "\n\024CreateHmacKeyRequest\022D\n\007project\030\001 \001(\tB"
           + "3\340A\002\372A-\n+cloudresourcemanager.googleapis"
-          + ".com/Project\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_"
-          + "token\030\003 \001(\t\022\035\n\025service_account_email\030\004 \001"
-          + "(\t\022\031\n\021show_deleted_keys\030\005 \001(\010\"f\n\024ListHma"
-          + "cKeysResponse\0225\n\thmac_keys\030\001 \003(\0132\".googl"
-          + "e.storage.v2.HmacKeyMetadata\022\027\n\017next_pag"
-          + "e_token\030\002 \001(\t\"\202\001\n\024UpdateHmacKeyRequest\0229"
-          + "\n\010hmac_key\030\001 \001(\0132\".google.storage.v2.Hma"
-          + "cKeyMetadataB\003\340A\002\022/\n\013update_mask\030\003 \001(\0132\032"
-          + ".google.protobuf.FieldMask\"|\n\031CommonObje"
-          + "ctRequestParams\022\034\n\024encryption_algorithm\030"
-          + "\001 \001(\t\022\034\n\024encryption_key_bytes\030\004 \001(\014\022#\n\033e"
-          + "ncryption_key_sha256_bytes\030\005 \001(\014\"\312\005\n\020Ser"
-          + "viceConstants\"\265\005\n\006Values\022\026\n\022VALUES_UNSPE"
-          + "CIFIED\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_OBJEC"
-          + "T_SIZE_MB\020\200\200\300\002\022)\n$MAX_CUSTOM_METADATA_FI"
-          + "ELD_NAME_BYTES\020\200\010\022*\n%MAX_CUSTOM_METADATA"
-          + "_FIELD_VALUE_BYTES\020\200 \022)\n$MAX_CUSTOM_META"
-          + "DATA_TOTAL_SIZE_BYTES\020\200@\022*\n$MAX_BUCKET_M"
-          + "ETADATA_TOTAL_SIZE_BYTES\020\200\240\001\022\'\n#MAX_NOTI"
-          + "FICATION_CONFIGS_PER_BUCKET\020d\022\"\n\036MAX_LIF"
-          + "ECYCLE_RULES_PER_BUCKET\020d\022&\n\"MAX_NOTIFIC"
-          + "ATION_CUSTOM_ATTRIBUTES\020\005\0221\n,MAX_NOTIFIC"
-          + "ATION_CUSTOM_ATTRIBUTE_KEY_LENGTH\020\200\002\0223\n."
-          + "MAX_NOTIFICATION_CUSTOM_ATTRIBUTE_VALUE_"
-          + "LENGTH\020\200\010\022\034\n\030MAX_LABELS_ENTRIES_COUNT\020@\022"
-          + "\037\n\033MAX_LABELS_KEY_VALUE_LENGTH\020?\022\037\n\032MAX_"
-          + "LABELS_KEY_VALUE_BYTES\020\200\001\022.\n)MAX_OBJECT_"
-          + "IDS_PER_DELETE_OBJECTS_REQUEST\020\350\007\022\036\n\032SPL"
-          + "IT_TOKEN_MAX_VALID_DAYS\020\016\032\002\020\001\"\317\027\n\006Bucket"
-          + "\022\021\n\004name\030\001 \001(\tB\003\340A\005\022\026\n\tbucket_id\030\002 \001(\tB\003"
-          + "\340A\003\022\014\n\004etag\030\035 \001(\t\022D\n\007project\030\003 \001(\tB3\340A\005\372"
-          + "A-\n+cloudresourcemanager.googleapis.com/"
-          + "Project\022\033\n\016metageneration\030\004 \001(\003B\003\340A\003\022\025\n\010"
-          + "location\030\005 \001(\tB\003\340A\005\022\032\n\rlocation_type\030\006 \001"
-          + "(\tB\003\340A\003\022\025\n\rstorage_class\030\007 \001(\t\022\013\n\003rpo\030\033 "
-          + "\001(\t\0223\n\003acl\030\010 \003(\0132&.google.storage.v2.Buc"
-          + "ketAccessControl\022B\n\022default_object_acl\030\t"
-          + " \003(\0132&.google.storage.v2.ObjectAccessCon"
-          + "trol\0226\n\tlifecycle\030\n \001(\0132#.google.storage"
-          + ".v2.Bucket.Lifecycle\0224\n\013create_time\030\013 \001("
-          + "\0132\032.google.protobuf.TimestampB\003\340A\003\022,\n\004co"
-          + "rs\030\014 \003(\0132\036.google.storage.v2.Bucket.Cors"
-          + "\0224\n\013update_time\030\r \001(\0132\032.google.protobuf."
-          + "TimestampB\003\340A\003\022 \n\030default_event_based_ho"
-          + "ld\030\016 \001(\010\0225\n\006labels\030\017 \003(\0132%.google.storag"
-          + "e.v2.Bucket.LabelsEntry\0222\n\007website\030\020 \001(\013"
-          + "2!.google.storage.v2.Bucket.Website\0228\n\nv"
-          + "ersioning\030\021 \001(\0132$.google.storage.v2.Buck"
-          + "et.Versioning\0222\n\007logging\030\022 \001(\0132!.google."
-          + "storage.v2.Bucket.Logging\022,\n\005owner\030\023 \001(\013"
-          + "2\030.google.storage.v2.OwnerB\003\340A\003\0228\n\nencry"
-          + "ption\030\024 \001(\0132$.google.storage.v2.Bucket.E"
-          + "ncryption\0222\n\007billing\030\025 \001(\0132!.google.stor"
-          + "age.v2.Bucket.Billing\022C\n\020retention_polic"
-          + "y\030\026 \001(\0132).google.storage.v2.Bucket.Reten"
-          + "tionPolicy\0227\n\niam_config\030\027 \001(\0132#.google."
-          + "storage.v2.Bucket.IamConfig\022\025\n\rsatisfies"
-          + "_pzs\030\031 \001(\010\022P\n\027custom_placement_config\030\032 "
-          + "\001(\0132/.google.storage.v2.Bucket.CustomPla"
-          + "cementConfig\0226\n\tautoclass\030\034 \001(\0132#.google"
-          + ".storage.v2.Bucket.Autoclass\032!\n\007Billing\022"
-          + "\026\n\016requester_pays\030\001 \001(\010\032X\n\004Cors\022\016\n\006origi"
-          + "n\030\001 \003(\t\022\016\n\006method\030\002 \003(\t\022\027\n\017response_head"
-          + "er\030\003 \003(\t\022\027\n\017max_age_seconds\030\004 \001(\005\032M\n\nEnc"
-          + "ryption\022?\n\017default_kms_key\030\001 \001(\tB&\372A#\n!c"
-          + "loudkms.googleapis.com/CryptoKey\032\354\001\n\tIam"
-          + "Config\022a\n\033uniform_bucket_level_access\030\001 "
-          + "\001(\0132<.google.storage.v2.Bucket.IamConfig"
-          + ".UniformBucketLevelAccess\022 \n\030public_acce"
-          + "ss_prevention\030\003 \001(\t\032Z\n\030UniformBucketLeve"
-          + "lAccess\022\017\n\007enabled\030\001 \001(\010\022-\n\tlock_time\030\002 "
-          + "\001(\0132\032.google.protobuf.Timestamp\032\363\005\n\tLife"
-          + "cycle\0226\n\004rule\030\001 \003(\0132(.google.storage.v2."
-          + "Bucket.Lifecycle.Rule\032\255\005\n\004Rule\022?\n\006action"
-          + "\030\001 \001(\0132/.google.storage.v2.Bucket.Lifecy"
-          + "cle.Rule.Action\022E\n\tcondition\030\002 \001(\01322.goo"
-          + "gle.storage.v2.Bucket.Lifecycle.Rule.Con"
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-          + "e_class\030\002 \001(\t\032\355\003\n\tCondition\022\025\n\010age_days\030"
-          + "\001 \001(\005H\000\210\001\001\022)\n\016created_before\030\002 \001(\0132\021.goo"
-          + "gle.type.Date\022\024\n\007is_live\030\003 \001(\010H\001\210\001\001\022\037\n\022n"
-          + "um_newer_versions\030\004 \001(\005H\002\210\001\001\022\035\n\025matches_"
-          + "storage_class\030\005 \003(\t\022#\n\026days_since_custom"
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-          + " \001(\0132\021.google.type.Date\022\'\n\032days_since_no"
-          + "ncurrent_time\030\t \001(\005H\004\210\001\001\0221\n\026noncurrent_t"
-          + "ime_before\030\n \001(\0132\021.google.type.Date\022\026\n\016m"
-          + "atches_prefix\030\013 \003(\t\022\026\n\016matches_suffix\030\014 "
-          + "\003(\tB\013\n\t_age_daysB\n\n\010_is_liveB\025\n\023_num_new"
-          + "er_versionsB\031\n\027_days_since_custom_timeB\035"
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-          + "\022\022\n\nlog_bucket\030\001 \001(\t\022\031\n\021log_object_prefi"
-          + "x\030\002 \001(\t\032\214\001\n\017RetentionPolicy\0222\n\016effective"
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-          + "ning\022\017\n\007enabled\030\001 \001(\010\032;\n\007Website\022\030\n\020main"
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-          + "\001(\t\022\r\n\005value\030\002 \001(\t:\0028\001:G\352AD\n\035storage.goo"
-          + "gleapis.com/Bucket\022#projects/{project}/b"
-          + "uckets/{bucket}\"\316\001\n\023BucketAccessControl\022"
-          + "\014\n\004role\030\001 \001(\t\022\n\n\002id\030\002 \001(\t\022\016\n\006entity\030\003 \001("
-          + "\t\022\027\n\nentity_alt\030\t \001(\tB\003\340A\003\022\021\n\tentity_id\030"
-          + "\004 \001(\t\022\014\n\004etag\030\010 \001(\t\022\r\n\005email\030\005 \001(\t\022\016\n\006do"
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-          + "e.storage.v2.ProjectTeam\"B\n\017ChecksummedD"
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-          + "c\"\255\002\n\017HmacKeyMetadata\022\017\n\002id\030\001 \001(\tB\003\340A\005\022\026"
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-          + ".com/Project\022\"\n\025service_account_email\030\004 "
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-          + ".v2.Notification.CustomAttributesEntry\022\032"
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-          + "ects/{project}/buckets/{bucket}/notifica"
-          + "tionConfigs/{notification}\"L\n\022CustomerEn"
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-          + "r\n\014DeleteBucket\022&.google.storage.v2.Dele"
-          + "teBucketRequest\032\026.google.protobuf.Empty\""
-          + "\"\212\323\344\223\002\025\022\023\n\004name\022\013{bucket=**}\332A\004name\022o\n\tG"
-          + "etBucket\022#.google.storage.v2.GetBucketRe"
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-          + "\022\023\n\004name\022\013{bucket=**}\332A\004name\022\213\001\n\014CreateB"
-          + "ucket\022&.google.storage.v2.CreateBucketRe"
-          + "quest\032\031.google.storage.v2.Bucket\"8\212\323\344\223\002\030"
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-          + "tRetentionPolicy\0223.google.storage.v2.Loc"
-          + "kBucketRetentionPolicyRequest\032\031.google.s"
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-          + "ket=**}\332A\006bucket\022\253\001\n\014GetIamPolicy\022\".goog"
-          + "le.iam.v1.GetIamPolicyRequest\032\025.google.i"
-          + "am.v1.Policy\"`\212\323\344\223\002O\022\027\n\010resource\022\013{bucke"
-          + "t=**}\0224\n\010resource\022({bucket=projects/*/bu"
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-          + " {bucket=projects/*/buckets/*}/**\332A\004name"
-          + "\022\226\001\n\017GetNotification\022).google.storage.v2"
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-          + "t=projects/*/buckets/*}/**\332A\004name\022\230\001\n\022Cr"
-          + "eateNotification\022,.google.storage.v2.Cre"
-          + "ateNotificationRequest\032\037.google.storage."
-          + "v2.Notification\"3\212\323\344\223\002\027\022\025\n\006parent\022\013{buck"
-          + "et=**}\332A\023parent,notification\022\226\001\n\021ListNot"
-          + "ifications\022+.google.storage.v2.ListNotif"
-          + "icationsRequest\032,.google.storage.v2.List"
-          + "NotificationsResponse\"&\212\323\344\223\002\027\022\025\n\006parent\022"
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-          + ".google.storage.v2.ComposeObjectRequest\032"
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-          + "stination.bucket\022\013{bucket=**}\022\230\001\n\014Delete"
-          + "Object\022&.google.storage.v2.DeleteObjectR"
-          + "equest\032\026.google.protobuf.Empty\"H\212\323\344\223\002\027\022\025"
-          + "\n\006bucket\022\013{bucket=**}\332A\rbucket,object\332A\030"
-          + "bucket,object,generation\022\272\001\n\024CancelResum"
-          + "ableWrite\022..google.storage.v2.CancelResu"
-          + "mableWriteRequest\032/.google.storage.v2.Ca"
-          + "ncelResumableWriteResponse\"A\212\323\344\223\002/\022-\n\tup"
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-          + "rage.v2.GetObjectRequest\032\031.google.storag"
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-          + "jectRequest\032&.google.storage.v2.WriteObj"
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-          + ".resource.bucket\022\013{bucket=**}\022-\n\tupload_"
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-          + "\001\n\013ListObjects\022%.google.storage.v2.ListO"
-          + "bjectsRequest\032&.google.storage.v2.ListOb"
-          + "jectsResponse\"&\212\323\344\223\002\027\022\025\n\006parent\022\013{bucket"
-          + "=**}\332A\006parent\022\230\001\n\rRewriteObject\022\'.google"
-          + ".storage.v2.RewriteObjectRequest\032\".googl"
-          + "e.storage.v2.RewriteResponse\":\212\323\344\223\0024\022\017\n\r"
-          + "source_bucket\022!\n\022destination_bucket\022\013{bu"
-          + "cket=**}\022\256\001\n\023StartResumableWrite\022-.googl"
-          + "e.storage.v2.StartResumableWriteRequest\032"
-          + "..google.storage.v2.StartResumableWriteR"
-          + "esponse\"8\212\323\344\223\0022\0220\n!write_object_spec.res"
-          + "ource.bucket\022\013{bucket=**}\022\256\001\n\020QueryWrite"
-          + "Status\022*.google.storage.v2.QueryWriteSta"
-          + "tusRequest\032+.google.storage.v2.QueryWrit"
-          + "eStatusResponse\"A\212\323\344\223\002/\022-\n\tupload_id\022 {b"
-          + "ucket=projects/*/buckets/*}/**\332A\tupload_"
-          + "id\022\200\001\n\021GetServiceAccount\022+.google.storag"
-          + "e.v2.GetServiceAccountRequest\032!.google.s"
-          + "torage.v2.ServiceAccount\"\033\212\323\344\223\002\013\022\t\n\007proj"
-          + "ect\332A\007project\022\225\001\n\rCreateHmacKey\022\'.google"
-          + ".storage.v2.CreateHmacKeyRequest\032(.googl"
-          + "e.storage.v2.CreateHmacKeyResponse\"1\212\323\344\223"
-          + "\002\013\022\t\n\007project\332A\035project,service_account_"
-          + "email\022w\n\rDeleteHmacKey\022\'.google.storage."
-          + "v2.DeleteHmacKeyRequest\032\026.google.protobu"
-          + "f.Empty\"%\212\323\344\223\002\013\022\t\n\007project\332A\021access_id,p"
-          + "roject\022}\n\nGetHmacKey\022$.google.storage.v2"
-          + ".GetHmacKeyRequest\032\".google.storage.v2.H"
-          + "macKeyMetadata\"%\212\323\344\223\002\013\022\t\n\007project\332A\021acce"
-          + "ss_id,project\022|\n\014ListHmacKeys\022&.google.s"
-          + "torage.v2.ListHmacKeysRequest\032\'.google.s"
-          + "torage.v2.ListHmacKeysResponse\"\033\212\323\344\223\002\013\022\t"
-          + "\n\007project\332A\007project\022\235\001\n\rUpdateHmacKey\022\'."
-          + "google.storage.v2.UpdateHmacKeyRequest\032\""
-          + ".google.storage.v2.HmacKeyMetadata\"?\212\323\344\223"
-          + "\002\"\022 \n\020hmac_key.project\022\014{project=**}\332A\024h"
-          + "mac_key,update_mask\032\247\002\312A\026storage.googlea"
-          + "pis.com\322A\212\002https://www.googleapis.com/au"
-          + "th/cloud-platform,https://www.googleapis"
-          + ".com/auth/cloud-platform.read-only,https"
-          + "://www.googleapis.com/auth/devstorage.fu"
-          + "ll_control,https://www.googleapis.com/au"
-          + "th/devstorage.read_only,https://www.goog"
-          + "leapis.com/auth/devstorage.read_writeB\334\001"
-          + "\n\025com.google.storage.v2B\014StorageProtoP\001Z"
-          + "8google.golang.org/genproto/googleapis/s"
-          + "torage/v2;storage\352Ax\n!cloudkms.googleapi"
-          + "s.com/CryptoKey\022Sprojects/{project}/loca"
-          + "tions/{location}/keyRings/{key_ring}/cry"
-          + "ptoKeys/{crypto_key}b\006proto3"
+          + ".com/Project\022\"\n\025service_account_email\030\002 "
+          + "\001(\tB\003\340A\002\"g\n\025CreateHmacKeyResponse\0224\n\010met"
+          + "adata\030\001 \001(\0132\".google.storage.v2.HmacKeyM"
+          + "etadata\022\030\n\020secret_key_bytes\030\003 \001(\014\"t\n\024Del"
+          + "eteHmacKeyRequest\022\026\n\taccess_id\030\001 \001(\tB\003\340A"
+          + "\002\022D\n\007project\030\002 \001(\tB3\340A\002\372A-\n+cloudresourc"
+          + "emanager.googleapis.com/Project\"q\n\021GetHm"
+          + "acKeyRequest\022\026\n\taccess_id\030\001 \001(\tB\003\340A\002\022D\n\007"
+          + "project\030\002 \001(\tB3\340A\002\372A-\n+cloudresourcemana"
+          + "ger.googleapis.com/Project\"\274\001\n\023ListHmacK"
+          + "eysRequest\022D\n\007project\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"
+          + "\035\n\025service_account_email\030\004 \001(\t\022\031\n\021show_d"
+          + "eleted_keys\030\005 \001(\010\"f\n\024ListHmacKeysRespons"
+          + "e\0225\n\thmac_keys\030\001 \003(\0132\".google.storage.v2"
+          + ".HmacKeyMetadata\022\027\n\017next_page_token\030\002 \001("
+          + "\t\"\202\001\n\024UpdateHmacKeyRequest\0229\n\010hmac_key\030\001"
+          + " \001(\0132\".google.storage.v2.HmacKeyMetadata"
+          + "B\003\340A\002\022/\n\013update_mask\030\003 \001(\0132\032.google.prot"
+          + "obuf.FieldMask\"|\n\031CommonObjectRequestPar"
+          + "ams\022\034\n\024encryption_algorithm\030\001 \001(\t\022\034\n\024enc"
+          + "ryption_key_bytes\030\004 \001(\014\022#\n\033encryption_ke"
+          + "y_sha256_bytes\030\005 \001(\014\"\312\005\n\020ServiceConstant"
+          + "s\"\265\005\n\006Values\022\026\n\022VALUES_UNSPECIFIED\020\000\022\033\n\024"
+          + "MAX_READ_CHUNK_BYTES\020\200\200\200\001\022\034\n\025MAX_WRITE_C"
+          + "HUNK_BYTES\020\200\200\200\001\022\031\n\022MAX_OBJECT_SIZE_MB\020\200\200"
+          + "\300\002\022)\n$MAX_CUSTOM_METADATA_FIELD_NAME_BYT"
+          + "ES\020\200\010\022*\n%MAX_CUSTOM_METADATA_FIELD_VALUE"
+          + "_BYTES\020\200 \022)\n$MAX_CUSTOM_METADATA_TOTAL_S"
+          + "IZE_BYTES\020\200@\022*\n$MAX_BUCKET_METADATA_TOTA"
+          + "L_SIZE_BYTES\020\200\240\001\022\'\n#MAX_NOTIFICATION_CON"
+          + "FIGS_PER_BUCKET\020d\022\"\n\036MAX_LIFECYCLE_RULES"
+          + "_PER_BUCKET\020d\022&\n\"MAX_NOTIFICATION_CUSTOM"
+          + "_ATTRIBUTES\020\005\0221\n,MAX_NOTIFICATION_CUSTOM"
+          + "_ATTRIBUTE_KEY_LENGTH\020\200\002\0223\n.MAX_NOTIFICA"
+          + "TION_CUSTOM_ATTRIBUTE_VALUE_LENGTH\020\200\010\022\034\n"
+          + "\030MAX_LABELS_ENTRIES_COUNT\020@\022\037\n\033MAX_LABEL"
+          + "S_KEY_VALUE_LENGTH\020?\022\037\n\032MAX_LABELS_KEY_V"
+          + "ALUE_BYTES\020\200\001\022.\n)MAX_OBJECT_IDS_PER_DELE"
+          + "TE_OBJECTS_REQUEST\020\350\007\022\036\n\032SPLIT_TOKEN_MAX"
+          + "_VALID_DAYS\020\016\032\002\020\001\"\206\030\n\006Bucket\022\021\n\004name\030\001 \001"
+          + "(\tB\003\340A\005\022\026\n\tbucket_id\030\002 \001(\tB\003\340A\003\022\014\n\004etag\030"
+          + "\035 \001(\t\022D\n\007project\030\003 \001(\tB3\340A\005\372A-\n+cloudres"
+          + "ourcemanager.googleapis.com/Project\022\033\n\016m"
+          + "etageneration\030\004 \001(\003B\003\340A\003\022\025\n\010location\030\005 \001"
+          + "(\tB\003\340A\005\022\032\n\rlocation_type\030\006 \001(\tB\003\340A\003\022\025\n\rs"
+          + "torage_class\030\007 \001(\t\022\013\n\003rpo\030\033 \001(\t\0223\n\003acl\030\010"
+          + " \003(\0132&.google.storage.v2.BucketAccessCon"
+          + "trol\022B\n\022default_object_acl\030\t \003(\0132&.googl"
+          + "e.storage.v2.ObjectAccessControl\0226\n\tlife"
+          + "cycle\030\n \001(\0132#.google.storage.v2.Bucket.L"
+          + "ifecycle\0224\n\013create_time\030\013 \001(\0132\032.google.p"
+          + "rotobuf.TimestampB\003\340A\003\022,\n\004cors\030\014 \003(\0132\036.g"
+          + "oogle.storage.v2.Bucket.Cors\0224\n\013update_t"
+          + "ime\030\r \001(\0132\032.google.protobuf.TimestampB\003\340"
+          + "A\003\022 \n\030default_event_based_hold\030\016 \001(\010\0225\n\006"
+          + "labels\030\017 \003(\0132%.google.storage.v2.Bucket."
+          + "LabelsEntry\0222\n\007website\030\020 \001(\0132!.google.st"
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+          + "\030\032 \001(\0132\032.google.protobuf.Timestamp\032/\n\rMe"
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+          + "ge\022r\n\014DeleteBucket\022&.google.storage.v2.D"
+          + "eleteBucketRequest\032\026.google.protobuf.Emp"
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+          + "\n\tGetBucket\022#.google.storage.v2.GetBucke"
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+          + "teBucket\022&.google.storage.v2.CreateBucke"
+          + "tRequest\032\031.google.storage.v2.Bucket\"8\212\323\344"
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+          + "ket,bucket_id\022\205\001\n\013ListBuckets\022%.google.s"
+          + "torage.v2.ListBucketsRequest\032&.google.st"
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+          + "parent\022\014{project=**}\332A\006parent\022\223\001\n\031LockBu"
+          + "cketRetentionPolicy\0223.google.storage.v2."
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+          + "\010resource\022\013{bucket=**}\0224\n\010resource\022({buc"
+          + "ket=projects/*/buckets/*}/objects/**\332A\017r"
+          + "esource,policy\022\327\001\n\022TestIamPermissions\022(."
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+          + "esource\022({bucket=projects/*/buckets/*}/o"
+          + "bjects/**\332A\024resource,permissions\022\212\001\n\014Upd"
+          + "ateBucket\022&.google.storage.v2.UpdateBuck"
+          + "etRequest\032\031.google.storage.v2.Bucket\"7\212\323"
+          + "\344\223\002\034\022\032\n\013bucket.name\022\013{bucket=**}\332A\022bucke"
+          + "t,update_mask\022\223\001\n\022DeleteNotification\022,.g"
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+          + "st\032\026.google.protobuf.Empty\"7\212\323\344\223\002*\022(\n\004na"
+          + "me\022 {bucket=projects/*/buckets/*}/**\332A\004n"
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+          + "cket=projects/*/buckets/*}/**\332A\004name\022\230\001\n"
+          + "\022CreateNotification\022,.google.storage.v2."
+          + "CreateNotificationRequest\032\037.google.stora"
+          + "ge.v2.Notification\"3\212\323\344\223\002\027\022\025\n\006parent\022\013{b"
+          + "ucket=**}\332A\023parent,notification\022\226\001\n\021List"
+          + "Notifications\022+.google.storage.v2.ListNo"
+          + "tificationsRequest\032,.google.storage.v2.L"
+          + "istNotificationsResponse\"&\212\323\344\223\002\027\022\025\n\006pare"
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+          + "t\022\'.google.storage.v2.ComposeObjectReque"
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+          + "\022destination.bucket\022\013{bucket=**}\022\230\001\n\014Del"
+          + "eteObject\022&.google.storage.v2.DeleteObje"
+          + "ctRequest\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\024CancelRe"
+          + "sumableWrite\022..google.storage.v2.CancelR"
+          + "esumableWriteRequest\032/.google.storage.v2"
+          + ".CancelResumableWriteResponse\"A\212\323\344\223\002/\022-\n"
+          + "\tupload_id\022 {bucket=projects/*/buckets/*"
+          + "}/**\332A\tupload_id\022\225\001\n\tGetObject\022#.google."
+          + "storage.v2.GetObjectRequest\032\031.google.sto"
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+          + "ect,generation0\001\022\214\001\n\014UpdateObject\022&.goog"
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+          + "`\n\013WriteObject\022%.google.storage.v2.Write"
+          + "ObjectRequest\032&.google.storage.v2.WriteO"
+          + "bjectResponse\"\000(\001\022\204\001\n\013ListObjects\022%.goog"
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+          + "\022\025\n\006parent\022\013{bucket=**}\332A\006parent\022\230\001\n\rRew"
+          + "riteObject\022\'.google.storage.v2.RewriteOb"
+          + "jectRequest\032\".google.storage.v2.RewriteR"
+          + "esponse\":\212\323\344\223\0024\022\017\n\rsource_bucket\022!\n\022dest"
+          + "ination_bucket\022\013{bucket=**}\022\256\001\n\023StartRes"
+          + "umableWrite\022-.google.storage.v2.StartRes"
+          + "umableWriteRequest\032..google.storage.v2.S"
+          + "tartResumableWriteResponse\"8\212\323\344\223\0022\0220\n!wr"
+          + "ite_object_spec.resource.bucket\022\013{bucket"
+          + "=**}\022\256\001\n\020QueryWriteStatus\022*.google.stora"
+          + "ge.v2.QueryWriteStatusRequest\032+.google.s"
+          + "torage.v2.QueryWriteStatusResponse\"A\212\323\344\223"
+          + "\002/\022-\n\tupload_id\022 {bucket=projects/*/buck"
+          + "ets/*}/**\332A\tupload_id\022\200\001\n\021GetServiceAcco"
+          + "unt\022+.google.storage.v2.GetServiceAccoun"
+          + "tRequest\032!.google.storage.v2.ServiceAcco"
+          + "unt\"\033\212\323\344\223\002\013\022\t\n\007project\332A\007project\022\225\001\n\rCre"
+          + "ateHmacKey\022\'.google.storage.v2.CreateHma"
+          + "cKeyRequest\032(.google.storage.v2.CreateHm"
+          + "acKeyResponse\"1\212\323\344\223\002\013\022\t\n\007project\332A\035proje"
+          + "ct,service_account_email\022w\n\rDeleteHmacKe"
+          + "y\022\'.google.storage.v2.DeleteHmacKeyReque"
+          + "st\032\026.google.protobuf.Empty\"%\212\323\344\223\002\013\022\t\n\007pr"
+          + "oject\332A\021access_id,project\022}\n\nGetHmacKey\022"
+          + "$.google.storage.v2.GetHmacKeyRequest\032\"."
+          + "google.storage.v2.HmacKeyMetadata\"%\212\323\344\223\002"
+          + "\013\022\t\n\007project\332A\021access_id,project\022|\n\014List"
+          + "HmacKeys\022&.google.storage.v2.ListHmacKey"
+          + "sRequest\032\'.google.storage.v2.ListHmacKey"
+          + "sResponse\"\033\212\323\344\223\002\013\022\t\n\007project\332A\007project\022\235"
+          + "\001\n\rUpdateHmacKey\022\'.google.storage.v2.Upd"
+          + "ateHmacKeyRequest\032\".google.storage.v2.Hm"
+          + "acKeyMetadata\"?\212\323\344\223\002\"\022 \n\020hmac_key.projec"
+          + "t\022\014{project=**}\332A\024hmac_key,update_mask\032\247"
+          + "\002\312A\026storage.googleapis.com\322A\212\002https://ww"
+          + "w.googleapis.com/auth/cloud-platform,htt"
+          + "ps://www.googleapis.com/auth/cloud-platf"
+          + "orm.read-only,https://www.googleapis.com"
+          + "/auth/devstorage.full_control,https://ww"
+          + "w.googleapis.com/auth/devstorage.read_on"
+          + "ly,https://www.googleapis.com/auth/devst"
+          + "orage.read_writeB\334\001\n\025com.google.storage."
+          + "v2B\014StorageProtoP\001Z8google.golang.org/ge"
+          + "nproto/googleapis/storage/v2;storage\352Ax\n"
+          + "!cloudkms.googleapis.com/CryptoKey\022Sproj"
+          + "ects/{project}/locations/{location}/keyR"
+          + "ings/{key_ring}/cryptoKeys/{crypto_key}b"
+          + "\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -875,6 +880,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.RoutingProto.getDescriptor(),
               com.google.iam.v1.IamPolicyProto.getDescriptor(),
               com.google.iam.v1.PolicyProto.getDescriptor(),
+              com.google.protobuf.DurationProto.getDescriptor(),
               com.google.protobuf.EmptyProto.getDescriptor(),
               com.google.protobuf.FieldMaskProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
@@ -1006,6 +1012,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "IfMetagenerationMatch",
               "KmsKey",
               "CommonObjectRequestParams",
+              "ObjectChecksums",
               "IfGenerationMatch",
               "IfMetagenerationMatch",
             });
@@ -1217,6 +1224,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "CopySourceEncryptionKeyBytes",
               "CopySourceEncryptionKeySha256Bytes",
               "CommonObjectRequestParams",
+              "ObjectChecksums",
               "IfGenerationMatch",
               "IfGenerationNotMatch",
               "IfMetagenerationMatch",
@@ -1240,7 +1248,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_StartResumableWriteRequest_descriptor,
             new java.lang.String[] {
-              "WriteObjectSpec", "CommonObjectRequestParams",
+              "WriteObjectSpec", "CommonObjectRequestParams", "ObjectChecksums",
             });
     internal_static_google_storage_v2_StartResumableWriteResponse_descriptor =
         getDescriptor().getMessageTypes().get(28);
@@ -1482,7 +1490,11 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_storage_v2_Bucket_RetentionPolicy_descriptor,
             new java.lang.String[] {
-              "EffectiveTime", "IsLocked", "RetentionPeriod", "RetentionPeriod",
+              "EffectiveTime",
+              "IsLocked",
+              "RetentionPeriod",
+              "RetentionDuration",
+              "RetentionPeriod",
             });
     internal_static_google_storage_v2_Bucket_Versioning_descriptor =
         internal_static_google_storage_v2_Bucket_descriptor.getNestedTypes().get(7);
@@ -1716,6 +1728,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.api.RoutingProto.getDescriptor();
     com.google.iam.v1.IamPolicyProto.getDescriptor();
     com.google.iam.v1.PolicyProto.getDescriptor();
+    com.google.protobuf.DurationProto.getDescriptor();
     com.google.protobuf.EmptyProto.getDescriptor();
     com.google.protobuf.FieldMaskProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequest.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequest.java
index 81b5d82e6..c045264ef 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequest.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequest.java
@@ -289,8 +289,8 @@ public com.google.storage.v2.WriteObjectSpecOrBuilder getWriteObjectSpecOrBuilde
    *
    *
    * <pre>
-   * Required. The offset from the beginning of the object at which the data should be
-   * written.
+   * Required. The offset from the beginning of the object at which the data
+   * should be written.
    * In the first `WriteObjectRequest` of a `WriteObject()` action, it
    * indicates the initial offset for the `Write()` call. The value **must** be
    * equal to the `persisted_size` that a call to `QueryWriteStatus()` would
@@ -1443,8 +1443,8 @@ public com.google.storage.v2.WriteObjectSpecOrBuilder getWriteObjectSpecOrBuilde
      *
      *
      * <pre>
-     * Required. The offset from the beginning of the object at which the data should be
-     * written.
+     * Required. The offset from the beginning of the object at which the data
+     * should be written.
      * In the first `WriteObjectRequest` of a `WriteObject()` action, it
      * indicates the initial offset for the `Write()` call. The value **must** be
      * equal to the `persisted_size` that a call to `QueryWriteStatus()` would
@@ -1467,8 +1467,8 @@ public long getWriteOffset() {
      *
      *
      * <pre>
-     * Required. The offset from the beginning of the object at which the data should be
-     * written.
+     * Required. The offset from the beginning of the object at which the data
+     * should be written.
      * In the first `WriteObjectRequest` of a `WriteObject()` action, it
      * indicates the initial offset for the `Write()` call. The value **must** be
      * equal to the `persisted_size` that a call to `QueryWriteStatus()` would
@@ -1494,8 +1494,8 @@ public Builder setWriteOffset(long value) {
      *
      *
      * <pre>
-     * Required. The offset from the beginning of the object at which the data should be
-     * written.
+     * Required. The offset from the beginning of the object at which the data
+     * should be written.
      * In the first `WriteObjectRequest` of a `WriteObject()` action, it
      * indicates the initial offset for the `Write()` call. The value **must** be
      * equal to the `persisted_size` that a call to `QueryWriteStatus()` would
diff --git a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequestOrBuilder.java b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequestOrBuilder.java
index 5c8fb8442..799717bb1 100644
--- a/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequestOrBuilder.java
+++ b/proto-google-cloud-storage-v2/src/main/java/com/google/storage/v2/WriteObjectRequestOrBuilder.java
@@ -105,8 +105,8 @@ public interface WriteObjectRequestOrBuilder
    *
    *
    * <pre>
-   * Required. The offset from the beginning of the object at which the data should be
-   * written.
+   * Required. The offset from the beginning of the object at which the data
+   * should be written.
    * In the first `WriteObjectRequest` of a `WriteObject()` action, it
    * indicates the initial offset for the `Write()` call. The value **must** be
    * equal to the `persisted_size` that a call to `QueryWriteStatus()` would
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 f6b522a30..7dc2b5f02 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
@@ -22,6 +22,7 @@ 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/duration.proto";
 import "google/protobuf/empty.proto";
 import "google/protobuf/field_mask.proto";
 import "google/protobuf/timestamp.proto";
@@ -69,10 +70,7 @@ 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=**}"
-      }
+      routing_parameters { field: "name" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "name";
   }
@@ -80,10 +78,7 @@ service Storage {
   // Returns metadata for the specified bucket.
   rpc GetBucket(GetBucketRequest) returns (Bucket) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "name"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "name" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "name";
   }
@@ -91,10 +86,7 @@ service Storage {
   // Creates a new bucket.
   rpc CreateBucket(CreateBucketRequest) returns (Bucket) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "parent"
-        path_template: "{project=**}"
-      }
+      routing_parameters { field: "parent" path_template: "{project=**}" }
     };
     option (google.api.method_signature) = "parent,bucket,bucket_id";
   }
@@ -102,32 +94,28 @@ service Storage {
   // Retrieves a list of buckets for a given project.
   rpc ListBuckets(ListBucketsRequest) returns (ListBucketsResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "parent"
-        path_template: "{project=**}"
-      }
+      routing_parameters { field: "parent" path_template: "{project=**}" }
     };
     option (google.api.method_signature) = "parent";
   }
 
   // Locks retention policy on a bucket.
-  rpc LockBucketRetentionPolicy(LockBucketRetentionPolicyRequest) returns (Bucket) {
+  rpc LockBucketRetentionPolicy(LockBucketRetentionPolicyRequest)
+      returns (Bucket) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "bucket"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "bucket" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "bucket";
   }
 
   // Gets the IAM policy for a specified bucket or object.
-  rpc GetIamPolicy(google.iam.v1.GetIamPolicyRequest) returns (google.iam.v1.Policy) {
+  // The `resource` field in the request should be
+  // projects/_/buckets/<bucket_name> for a bucket or
+  // projects/_/buckets/<bucket_name>/objects/<object_name> for an 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=**}" }
       routing_parameters {
         field: "resource"
         path_template: "{bucket=projects/*/buckets/*}/objects/**"
@@ -137,12 +125,13 @@ service Storage {
   }
 
   // Updates an IAM policy for the specified bucket or object.
-  rpc SetIamPolicy(google.iam.v1.SetIamPolicyRequest) returns (google.iam.v1.Policy) {
+  // The `resource` field in the request should be
+  // projects/_/buckets/<bucket_name> for a bucket or
+  // projects/_/buckets/<bucket_name>/objects/<object_name> for an 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=**}" }
       routing_parameters {
         field: "resource"
         path_template: "{bucket=projects/*/buckets/*}/objects/**"
@@ -153,12 +142,13 @@ service Storage {
 
   // 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) {
+  // The `resource` field in the request should be
+  // projects/_/buckets/<bucket_name> for a bucket or
+  // projects/_/buckets/<bucket_name>/objects/<object_name> for an object.
+  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=**}" }
       routing_parameters {
         field: "resource"
         path_template: "{bucket=projects/*/buckets/*}/objects/**"
@@ -170,16 +160,14 @@ service Storage {
   // 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=**}"
-      }
+      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) {
+  rpc DeleteNotification(DeleteNotificationRequest)
+      returns (google.protobuf.Empty) {
     option (google.api.routing) = {
       routing_parameters {
         field: "name"
@@ -206,21 +194,16 @@ service Storage {
   // 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=**}"
-      }
+      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) {
+  rpc ListNotifications(ListNotificationsRequest)
+      returns (ListNotificationsResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "parent"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "parent" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "parent";
   }
@@ -240,17 +223,15 @@ service Storage {
   // 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=**}"
-      }
+      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) {
+  rpc CancelResumableWrite(CancelResumableWriteRequest)
+      returns (CancelResumableWriteResponse) {
     option (google.api.routing) = {
       routing_parameters {
         field: "upload_id"
@@ -263,10 +244,7 @@ service Storage {
   // Retrieves an object's metadata.
   rpc GetObject(GetObjectRequest) returns (Object) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "bucket"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "bucket" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "bucket,object";
     option (google.api.method_signature) = "bucket,object,generation";
@@ -275,10 +253,7 @@ service Storage {
   // Reads an object's data.
   rpc ReadObject(ReadObjectRequest) returns (stream ReadObjectResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "bucket"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "bucket" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "bucket,object";
     option (google.api.method_signature) = "bucket,object,generation";
@@ -288,10 +263,7 @@ service Storage {
   // 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=**}"
-      }
+      routing_parameters { field: "object.bucket" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "object,update_mask";
   }
@@ -348,26 +320,12 @@ service Storage {
   // Attempting to resume an already finalized object will result in an OK
   // 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/*}/**"
-      }
-    };
-  }
+  rpc WriteObject(stream WriteObjectRequest) returns (WriteObjectResponse) {}
 
   // Retrieves a list of objects matching the criteria.
   rpc ListObjects(ListObjectsRequest) returns (ListObjectsResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "parent"
-        path_template: "{bucket=**}"
-      }
+      routing_parameters { field: "parent" path_template: "{bucket=**}" }
     };
     option (google.api.method_signature) = "parent";
   }
@@ -376,9 +334,7 @@ service Storage {
   // metadata.
   rpc RewriteObject(RewriteObjectRequest) returns (RewriteResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "source_bucket"
-      }
+      routing_parameters { field: "source_bucket" }
       routing_parameters {
         field: "destination_bucket"
         path_template: "{bucket=**}"
@@ -389,7 +345,8 @@ service Storage {
   // 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) {
+  rpc StartResumableWrite(StartResumableWriteRequest)
+      returns (StartResumableWriteResponse) {
     option (google.api.routing) = {
       routing_parameters {
         field: "write_object_spec.resource.bucket"
@@ -411,7 +368,8 @@ service Storage {
   // evicted. For any sequence of `QueryWriteStatus()` calls for a given
   // object name, the sequence of returned `persisted_size` values will be
   // non-decreasing.
-  rpc QueryWriteStatus(QueryWriteStatusRequest) returns (QueryWriteStatusResponse) {
+  rpc QueryWriteStatus(QueryWriteStatusRequest)
+      returns (QueryWriteStatusResponse) {
     option (google.api.routing) = {
       routing_parameters {
         field: "upload_id"
@@ -424,9 +382,7 @@ service Storage {
   // Retrieves the name of a project's Google Cloud Storage service account.
   rpc GetServiceAccount(GetServiceAccountRequest) returns (ServiceAccount) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "project"
-      }
+      routing_parameters { field: "project" }
     };
     option (google.api.method_signature) = "project";
   }
@@ -434,9 +390,7 @@ service Storage {
   // Creates a new HMAC key for the given service account.
   rpc CreateHmacKey(CreateHmacKeyRequest) returns (CreateHmacKeyResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "project"
-      }
+      routing_parameters { field: "project" }
     };
     option (google.api.method_signature) = "project,service_account_email";
   }
@@ -444,9 +398,7 @@ service Storage {
   // Deletes a given HMAC key.  Key must be in an INACTIVE state.
   rpc DeleteHmacKey(DeleteHmacKeyRequest) returns (google.protobuf.Empty) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "project"
-      }
+      routing_parameters { field: "project" }
     };
     option (google.api.method_signature) = "access_id,project";
   }
@@ -454,9 +406,7 @@ service Storage {
   // Gets an existing HMAC key metadata for the given id.
   rpc GetHmacKey(GetHmacKeyRequest) returns (HmacKeyMetadata) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "project"
-      }
+      routing_parameters { field: "project" }
     };
     option (google.api.method_signature) = "access_id,project";
   }
@@ -464,9 +414,7 @@ service Storage {
   // Lists HMAC keys under a given project with the additional filters provided.
   rpc ListHmacKeys(ListHmacKeysRequest) returns (ListHmacKeysResponse) {
     option (google.api.routing) = {
-      routing_parameters {
-        field: "project"
-      }
+      routing_parameters { field: "project" }
     };
     option (google.api.method_signature) = "project";
   }
@@ -488,9 +436,7 @@ message DeleteBucketRequest {
   // Required. Name of a bucket to delete.
   string name = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 
   // If set, only deletes the bucket if its metageneration matches this value.
@@ -506,9 +452,7 @@ message GetBucketRequest {
   // Required. Name of a bucket.
   string name = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 
   // If set, and if the bucket's current metageneration does not match the
@@ -541,9 +485,9 @@ message CreateBucketRequest {
   // result in an error.
   Bucket bucket = 2;
 
-  // Required. The ID to use for this bucket, which will become the final component of
-  // the bucket's resource name. For example, the value `foo` might result in
-  // a bucket with the name `projects/123456/buckets/foo`.
+  // Required. The ID to use for this bucket, which will become the final
+  // component of the bucket's resource name. For example, the value `foo` might
+  // result in a bucket with the name `projects/123456/buckets/foo`.
   string bucket_id = 3 [(google.api.field_behavior) = REQUIRED];
 
   // Apply a predefined set of access controls to this bucket.
@@ -602,13 +546,11 @@ message LockBucketRetentionPolicyRequest {
   // Required. Name of a bucket.
   string bucket = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 
-  // Required. Makes the operation conditional on whether bucket's current metageneration
-  // matches the given value. Must be positive.
+  // Required. Makes the operation conditional on whether bucket's current
+  // metageneration matches the given value. Must be positive.
   int64 if_metageneration_match = 2 [(google.api.field_behavior) = REQUIRED];
 }
 
@@ -646,7 +588,8 @@ message UpdateBucketRequest {
   // Not specifying any fields is an error.
   // Not specifying a field while setting that field to a non-default value is
   // an error.
-  google.protobuf.FieldMask update_mask = 6 [(google.api.field_behavior) = REQUIRED];
+  google.protobuf.FieldMask update_mask = 6
+      [(google.api.field_behavior) = REQUIRED];
 }
 
 // Request message for DeleteNotification.
@@ -667,9 +610,7 @@ message GetNotificationRequest {
   // `projects/{project}/buckets/{bucket}/notificationConfigs/{notification}`
   string name = 1 [
     (google.api.field_behavior) = REQUIRED,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 }
 
@@ -733,8 +674,8 @@ message ComposeObjectRequest {
       optional int64 if_generation_match = 1;
     }
 
-    // Required. The source object's name. All source objects must reside in the same
-    // bucket.
+    // Required. The source object's name. All source objects must reside in the
+    // same bucket.
     string name = 1 [(google.api.field_behavior) = REQUIRED];
 
     // The generation of this object to use as the source.
@@ -769,11 +710,15 @@ message ComposeObjectRequest {
   // that will be used to encrypt the object. Overrides the object
   // metadata's `kms_key_name` value, if any.
   string kms_key = 6 [(google.api.resource_reference) = {
-                        type: "cloudkms.googleapis.com/CryptoKey"
-                      }];
+    type: "cloudkms.googleapis.com/CryptoKey"
+  }];
 
   // A set of parameters common to Storage API requests concerning an object.
   CommonObjectRequestParams common_object_request_params = 7;
+
+  // The checksums of the complete object. This will be validated against the
+  // combined checksums of the component objects.
+  ObjectChecksums object_checksums = 10;
 }
 
 // Message for deleting an object.
@@ -782,7 +727,9 @@ message DeleteObjectRequest {
   // Required. Name of the bucket in which the object resides.
   string bucket = 1 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. The name of the object to delete (when not using a resumable write).
+  // Required. The name of the finalized object to delete.
+  // Note: If you want to delete an unfinalized resumable upload please use
+  // `CancelResumableWrite`.
   string object = 2 [(google.api.field_behavior) = REQUIRED];
 
   // If present, permanently deletes a specific revision of this object (as
@@ -815,16 +762,14 @@ message DeleteObjectRequest {
 // 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`.
+  // 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 {
-
-}
+message CancelResumableWriteResponse {}
 
 // Request message for ReadObject.
 message ReadObjectRequest {
@@ -1006,8 +951,8 @@ message WriteObjectRequest {
     WriteObjectSpec write_object_spec = 2;
   }
 
-  // Required. The offset from the beginning of the object at which the data should be
-  // written.
+  // Required. The offset from the beginning of the object at which the data
+  // should be written.
   //
   // In the first `WriteObjectRequest` of a `WriteObject()` action, it
   // indicates the initial offset for the `Write()` call. The value **must** be
@@ -1108,23 +1053,23 @@ message ListObjectsRequest {
   // * may be used to mean "all fields".
   optional google.protobuf.FieldMask read_mask = 8;
 
-  // Filter results to objects whose names are lexicographically equal to or
-  // after lexicographic_start. If lexicographic_end is also set, the objects
-  // listed have names between lexicographic_start (inclusive) and
+  // Optional. Filter results to objects whose names are lexicographically equal
+  // to or after lexicographic_start. If lexicographic_end is also set, the
+  // objects listed have names between lexicographic_start (inclusive) and
   // lexicographic_end (exclusive).
-  string lexicographic_start = 10;
+  string lexicographic_start = 10 [(google.api.field_behavior) = OPTIONAL];
 
-  // Filter results to objects whose names are lexicographically before
-  // lexicographic_end. If lexicographic_start is also set, the objects listed
-  // have names between lexicographic_start (inclusive) and lexicographic_end
-  // (exclusive).
-  string lexicographic_end = 11;
+  // Optional. Filter results to objects whose names are lexicographically
+  // before lexicographic_end. If lexicographic_start is also set, the objects
+  // listed have names between lexicographic_start (inclusive) and
+  // lexicographic_end (exclusive).
+  string lexicographic_end = 11 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Request object for `QueryWriteStatus`.
 message QueryWriteStatusRequest {
-  // Required. The name of the resume token for the object whose write status is being
-  // requested.
+  // Required. The name of the resume token for the object whose write status is
+  // being requested.
   string upload_id = 1 [(google.api.field_behavior) = REQUIRED];
 
   // A set of parameters common to Storage API requests concerning an object.
@@ -1158,7 +1103,7 @@ message QueryWriteStatusResponse {
 message RewriteObjectRequest {
   // Required. Immutable. The name of the destination object.
   // See the
-  // [Naming Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+  // [Naming Guidelines](https://cloud.google.com/storage/docs/objects#naming).
   // 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
@@ -1168,13 +1113,12 @@ message RewriteObjectRequest {
     (google.api.field_behavior) = IMMUTABLE
   ];
 
-  // Required. Immutable. The name of the bucket containing the destination object.
+  // Required. Immutable. The name of the bucket containing the destination
+  // object.
   string destination_bucket = 25 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.field_behavior) = IMMUTABLE,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 
   // The name of the Cloud KMS key that will be used to encrypt the destination
@@ -1183,8 +1127,8 @@ message RewriteObjectRequest {
   // bucket's default encryption key, if any, or else the Google-managed
   // encryption key.
   string destination_kms_key = 27 [(google.api.resource_reference) = {
-                                     type: "cloudkms.googleapis.com/CryptoKey"
-                                   }];
+    type: "cloudkms.googleapis.com/CryptoKey"
+  }];
 
   // Properties of the destination, post-rewrite object.
   // The `name`, `bucket` and `kms_key` fields must not be populated (these
@@ -1278,6 +1222,10 @@ message RewriteObjectRequest {
 
   // A set of parameters common to Storage API requests concerning an object.
   CommonObjectRequestParams common_object_request_params = 19;
+
+  // The checksums of the complete object. This will be used to validate the
+  // destination object after rewriting.
+  ObjectChecksums object_checksums = 29;
 }
 
 // A rewrite response.
@@ -1305,11 +1253,19 @@ message RewriteResponse {
 
 // Request message StartResumableWrite.
 message StartResumableWriteRequest {
-  // Required. The destination bucket, object, and metadata, as well as any preconditions.
-  WriteObjectSpec write_object_spec = 1 [(google.api.field_behavior) = REQUIRED];
+  // Required. The destination bucket, object, and metadata, as well as any
+  // preconditions.
+  WriteObjectSpec write_object_spec = 1
+      [(google.api.field_behavior) = REQUIRED];
 
   // A set of parameters common to Storage API requests concerning an object.
   CommonObjectRequestParams common_object_request_params = 3;
+
+  // The checksums of the complete object. This will be used to validate the
+  // uploaded object. For each upload, object_checksums can be provided with
+  // either StartResumableWriteRequest or the WriteObjectRequest with
+  // finish_write set to `true`.
+  ObjectChecksums object_checksums = 5;
 }
 
 // Response object for `StartResumableWrite`.
@@ -1362,7 +1318,8 @@ message UpdateObjectRequest {
   // Not specifying any fields is an error.
   // Not specifying a field while setting that field to a non-default value is
   // an error.
-  google.protobuf.FieldMask update_mask = 7 [(google.api.field_behavior) = REQUIRED];
+  google.protobuf.FieldMask update_mask = 7
+      [(google.api.field_behavior) = REQUIRED];
 
   // A set of parameters common to Storage API requests concerning an object.
   CommonObjectRequestParams common_object_request_params = 8;
@@ -1382,9 +1339,9 @@ message GetServiceAccountRequest {
 
 // Request message for CreateHmacKey.
 message CreateHmacKeyRequest {
-  // 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.
+  // 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) = {
@@ -1586,8 +1543,6 @@ message ServiceConstants {
     // GetListObjectsSplitPoints RPC is valid.
     SPLIT_TOKEN_MAX_VALID_DAYS = 14;
   }
-
-
 }
 
 // A bucket.
@@ -1634,8 +1589,8 @@ message Bucket {
     // The name of the Cloud KMS key that will be used to encrypt objects
     // inserted into this bucket, if no encryption method is specified.
     string default_kms_key = 1 [(google.api.resource_reference) = {
-                                  type: "cloudkms.googleapis.com/CryptoKey"
-                                }];
+      type: "cloudkms.googleapis.com/CryptoKey"
+    }];
   }
 
   // Bucket restriction options.
@@ -1647,8 +1602,9 @@ message Bucket {
       bool enabled = 1;
 
       // The deadline time for changing
-      // `iamConfig.uniformBucketLevelAccess.enabled` from `true` to `false`.
-      // Mutable until the specified deadline is reached, but not afterward.
+      // `iam_config.uniform_bucket_level_access.enabled` from `true` to
+      // `false`. Mutable until the specified deadline is reached, but not
+      // afterward.
       google.protobuf.Timestamp lock_time = 2;
     }
 
@@ -1771,6 +1727,13 @@ message Bucket {
     // enforcement of retention periods less than a day is not guaranteed. Such
     // periods should only be used for testing purposes.
     optional int64 retention_period = 3;
+
+    // The duration that objects need to be retained. Retention duration must be
+    // greater than zero and less than 100 years. Note that enforcement of
+    // retention periods less than a day is not guaranteed. Such periods should
+    // only be used for testing purposes. Any `nanos` value specified will be
+    // rounded down to the nearest second.
+    google.protobuf.Duration retention_duration = 4;
   }
 
   // Properties of a bucket related to versioning.
@@ -1812,19 +1775,20 @@ message Bucket {
     // Enables Autoclass.
     bool enabled = 1;
 
-    // Output only. Latest instant at which the `enabled` field was set to true after being
-    // disabled/unconfigured or set to false after being enabled. If Autoclass
-    // is enabled when the bucket is created, the toggle_time is set to the
-    // bucket creation time.
-    google.protobuf.Timestamp toggle_time = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
+    // Output only. Latest instant at which the `enabled` field was set to true
+    // after being disabled/unconfigured or set to false after being enabled. If
+    // Autoclass is enabled when the bucket is created, the toggle_time is set
+    // to the bucket creation time.
+    google.protobuf.Timestamp toggle_time = 2
+        [(google.api.field_behavior) = OUTPUT_ONLY];
   }
 
   // Immutable. The name of the bucket.
   string name = 1 [(google.api.field_behavior) = IMMUTABLE];
 
-  // Output only. The user-chosen part of the bucket name. The `{bucket}` portion of the
-  // `name` field. For globally unique buckets, this is equal to the "bucket
-  // name" of other Cloud Storage APIs. Example: "pub".
+  // Output only. The user-chosen part of the bucket name. The `{bucket}`
+  // portion of the `name` field. For globally unique buckets, this is equal to
+  // the "bucket name" of other Cloud Storage APIs. Example: "pub".
   string bucket_id = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The etag of the bucket.
@@ -1847,14 +1811,16 @@ message Bucket {
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
   int64 metageneration = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Immutable. The location of the bucket. Object data for objects in the bucket resides
-  // in physical storage within this region.  Defaults to `US`. See the
+  // Immutable. The location of the bucket. Object data for objects in the
+  // bucket resides in physical storage within this region.  Defaults to `US`.
+  // See the
   // [https://developers.google.com/storage/docs/concepts-techniques#specifyinglocations"][developer's
   // guide] for the authoritative list. Attempting to update this field after
   // the bucket is created will result in an error.
   string location = 5 [(google.api.field_behavior) = IMMUTABLE];
 
-  // Output only. The location type of the bucket (region, dual-region, multi-region, etc).
+  // Output only. The location type of the bucket (region, dual-region,
+  // multi-region, etc).
   string location_type = 6 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The bucket's default storage class, used whenever no storageClass is
@@ -1874,12 +1840,12 @@ message Bucket {
   string rpo = 27;
 
   // Access controls on the bucket.
-  // If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+  // If iam_config.uniform_bucket_level_access is enabled on this bucket,
   // requests to set, read, or modify acl is an error.
   repeated BucketAccessControl acl = 8;
 
   // Default access controls to apply to new objects when no ACL is provided.
-  // If iamConfig.uniformBucketLevelAccess is enabled on this bucket,
+  // If iam_config.uniform_bucket_level_access is enabled on this bucket,
   // requests to set, read, or modify acl is an error.
   repeated ObjectAccessControl default_object_acl = 9;
 
@@ -1891,7 +1857,8 @@ message Bucket {
   // Output only. The creation time of the bucket.
   // Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
-  google.protobuf.Timestamp create_time = 11 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp create_time = 11
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The bucket's [https://www.w3.org/TR/cors/][Cross-Origin Resource Sharing]
   // (CORS) config.
@@ -1900,7 +1867,8 @@ message Bucket {
   // Output only. The modification time of the bucket.
   // Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
-  google.protobuf.Timestamp update_time = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp update_time = 13
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The default value for event-based hold on newly created objects in this
   // bucket.  Event-based hold is a way to retain objects indefinitely until an
@@ -1933,7 +1901,8 @@ message Bucket {
   // and name prefix (if any) for the current bucket's logs.
   Logging logging = 18;
 
-  // Output only. The owner of the bucket. This is always the project team's owner group.
+  // Output only. The owner of the bucket. This is always the project team's
+  // owner group.
   Owner owner = 19 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Encryption config for a bucket.
@@ -1996,8 +1965,8 @@ message BucketAccessControl {
   // returned on response.
   string entity = 3;
 
-  // Output only. The alternative entity format, if exists. For project entities,
-  // `project-{team}-{projectid}` format will be returned on response.
+  // Output only. The alternative entity format, if exists. For project
+  // entities, `project-{team}-{projectid}` format will be returned on response.
   string entity_alt = 9 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The ID for the entity, if any.
@@ -2057,9 +2026,9 @@ message HmacKeyMetadata {
   // Immutable. Globally unique id for keys.
   string access_id = 2 [(google.api.field_behavior) = IMMUTABLE];
 
-  // 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.
+  // 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) = {
@@ -2075,10 +2044,12 @@ message HmacKeyMetadata {
   string state = 5;
 
   // Output only. The creation time of the HMAC key.
-  google.protobuf.Timestamp create_time = 6 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp create_time = 6
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The last modification time of the HMAC key metadata.
-  google.protobuf.Timestamp update_time = 7 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp update_time = 7
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The etag of the HMAC key.
   string etag = 8;
@@ -2097,7 +2068,8 @@ message Notification {
   // The `{project}` portion may be `_` for globally unique buckets.
   string name = 1 [(google.api.field_behavior) = REQUIRED];
 
-  // Required. The Pub/Sub topic to which this subscription publishes. Formatted as:
+  // Required. The Pub/Sub topic to which this subscription publishes. Formatted
+  // as:
   // '//pubsub.googleapis.com/projects/{project-identifier}/topics/{my-topic}'
   string topic = 2 [(google.api.field_behavior) = REQUIRED];
 
@@ -2135,9 +2107,9 @@ message CustomerEncryption {
 
 // An object.
 message Object {
-  // Immutable. The name of this object. Nearly any sequence of unicode characters is
-  // valid. See
-  // [Guidelines](https://cloud.google.com/storage/docs/naming-objects).
+  // Immutable. The name of this object. Nearly any sequence of unicode
+  // characters is valid. See
+  // [Guidelines](https://cloud.google.com/storage/docs/objects#naming).
   // 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
@@ -2147,9 +2119,7 @@ message Object {
   // Immutable. The name of the bucket containing this object.
   string bucket = 2 [
     (google.api.field_behavior) = IMMUTABLE,
-    (google.api.resource_reference) = {
-      type: "storage.googleapis.com/Bucket"
-    }
+    (google.api.resource_reference) = { type: "storage.googleapis.com/Bucket" }
   ];
 
   // The etag of the object.
@@ -2158,17 +2128,16 @@ message Object {
   // object.
   string etag = 27;
 
-  // Immutable. The content generation of this object. Used for object versioning.
-  // Attempting to set or update this field will result in a
+  // Immutable. The content generation of this object. Used for object
+  // versioning. Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
   int64 generation = 3 [(google.api.field_behavior) = IMMUTABLE];
 
-  // Output only. The version of the metadata for this generation of this object. Used for
-  // preconditions and for detecting changes in metadata. A metageneration
-  // number is only meaningful in the context of a particular generation of a
-  // particular object.
-  // Attempting to set or update this field will result in a
-  // [FieldViolation][google.rpc.BadRequest.FieldViolation].
+  // Output only. The version of the metadata for this generation of this
+  // object. Used for preconditions and for detecting changes in metadata. A
+  // metageneration number is only meaningful in the context of a particular
+  // generation of a particular object. Attempting to set or update this field
+  // will result in a [FieldViolation][google.rpc.BadRequest.FieldViolation].
   int64 metageneration = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Storage class of the object.
@@ -2195,7 +2164,7 @@ message Object {
   string cache_control = 9;
 
   // Access controls on the object.
-  // If iamConfig.uniformBucketLevelAccess is enabled on the parent
+  // If iam_config.uniform_bucket_level_access is enabled on the parent
   // bucket, requests to set, read, or modify acl is an error.
   repeated ObjectAccessControl acl = 10;
 
@@ -2203,11 +2172,12 @@ message Object {
   // [https://tools.ietf.org/html/rfc7231#section-3.1.3.2][RFC 7231 §3.1.3.2].
   string content_language = 11;
 
-  // Output only. The deletion time of the object. Will be returned if and only if this
-  // version of the object has been deleted.
-  // Attempting to set or update this field will result in a
+  // Output only. The deletion time of the object. Will be returned if and only
+  // if this version of the object has been deleted. Attempting to set or update
+  // this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
-  google.protobuf.Timestamp delete_time = 12 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp delete_time = 12
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Content-Type of the object data, matching
   // [https://tools.ietf.org/html/rfc7231#section-3.1.1.5][RFC 7231 §3.1.1.5].
@@ -2218,15 +2188,17 @@ message Object {
   // Output only. The creation time of the object.
   // Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
-  google.protobuf.Timestamp create_time = 14 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp create_time = 14
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Output only. Number of underlying components that make up this object. Components are
-  // accumulated by compose operations.
-  // Attempting to set or update this field will result in a
+  // Output only. Number of underlying components that make up this object.
+  // Components are accumulated by compose operations. Attempting to set or
+  // update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
   int32 component_count = 15 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Output only. Hashes for the data part of this object.
+  // Output only. Hashes for the data part of this object. This field is used
+  // for output only and will be silently ignored if provided in requests.
   ObjectChecksums checksums = 16 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Output only. The modification time of the object metadata.
@@ -2237,19 +2209,21 @@ message Object {
   // 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];
+  google.protobuf.Timestamp update_time = 17
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Cloud KMS Key used to encrypt this object, if the object is encrypted by
   // such a key.
   string kms_key = 18 [(google.api.resource_reference) = {
-                         type: "cloudkms.googleapis.com/CryptoKey"
-                       }];
+    type: "cloudkms.googleapis.com/CryptoKey"
+  }];
 
-  // Output only. The time at which the object's storage class was last changed. When the
-  // object is initially created, it will be set to time_created.
+  // Output only. The time at which the object's storage class was last changed.
+  // When the object is initially created, it will be set to time_created.
   // Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
-  google.protobuf.Timestamp update_storage_class_time = 19 [(google.api.field_behavior) = OUTPUT_ONLY];
+  google.protobuf.Timestamp update_storage_class_time = 19
+      [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // Whether an object is under temporary hold. While this flag is set to true,
   // the object is protected against deletion and overwrites.  A common use case
@@ -2283,8 +2257,8 @@ message Object {
   // In a response, this field will always be set to true or false.
   optional bool event_based_hold = 23;
 
-  // Output only. The owner of the object. This will always be the uploader of the object.
-  // Attempting to set or update this field will result in a
+  // Output only. The owner of the object. This will always be the uploader of
+  // the object. Attempting to set or update this field will result in a
   // [FieldViolation][google.rpc.BadRequest.FieldViolation].
   Owner owner = 24 [(google.api.field_behavior) = OUTPUT_ONLY];
 
@@ -2324,8 +2298,8 @@ message ObjectAccessControl {
   // returned on response.
   string entity = 3;
 
-  // Output only. The alternative entity format, if exists. For project entities,
-  // `project-{team}-{projectid}` format will be returned on response.
+  // Output only. The alternative entity format, if exists. For project
+  // entities, `project-{team}-{projectid}` format will be returned on response.
   string entity_alt = 9 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The ID for the entity, if any.