private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.GcsDestination,
            com.google.cloud.vertexai.api.GcsDestination.Builder,
            com.google.cloud.vertexai.api.GcsDestinationOrBuilder>
        getGcsDestinationFieldBuilder() {
      if (gcsDestinationBuilder_ == null) {
        gcsDestinationBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.GcsDestination,
                com.google.cloud.vertexai.api.GcsDestination.Builder,
                com.google.cloud.vertexai.api.GcsDestinationOrBuilder>(
                getGcsDestination(), getParentForChildren(), isClean());
        gcsDestination_ = null;
      }
      return gcsDestinationBuilder_;
    }
<pre>
Required. Google Cloud Storage location.
</pre>

<code>
.google.cloud.vertexai.v1.GcsDestination gcs_destination = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/TFRecordDestination.java