@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, parent_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(jobId_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, jobId_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getJob());
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestId_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, requestId_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
Optional. An optional request ID to identify requests. Specify a unique
request ID in case you need to retry your request. Requests with same
`request_id` will be ignored for at least 60 minutes since the first
request. The request ID must be a valid UUID with the exception that zero
UUID is not supported (00000000-0000-0000-0000-000000000000).
</pre>

<code>string request_id = 4 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for requestId.
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/CreateJobRequest.java