@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestId_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, requestId_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
A unique id associated with this call.
This id is logged for tracking purposes.
</pre>

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

@return The bytes for requestId.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/ResponseMetadata.java