public com.google.protobuf.ByteString getRequestIdBytes() {
      java.lang.Object ref = requestId_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        requestId_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Strongly recommended for the best service experience.

A unique ID generated in the API responses. It can be found in
[ResponseMetadata.request_id][google.cloud.talent.v4.ResponseMetadata.request_id].
</pre>

<code>string request_id = 1;</code>

@return The bytes for requestId.
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ClientEvent.java