@java.lang.Override
  public com.google.protobuf.ByteString getJobIdBytes() {
    java.lang.Object ref = jobId_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      jobId_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
Required. The optional `job_id` for this Job . If not
specified, an id is generated. `job_id` should be no more than 128
characters and must include only characters available in DNS names, as
defined by RFC-1123.
</pre>

<code>string job_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>

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