public com.google.cloud.talent.v4.ResponseMetadataOrBuilder getMetadataOrBuilder() {
      if (metadataBuilder_ != null) {
        return metadataBuilder_.getMessageOrBuilder();
      } else {
        return metadata_ == null
            ? com.google.cloud.talent.v4.ResponseMetadata.getDefaultInstance()
            : metadata_;
      }
    }
<pre>
Additional information for the API invocation, such as the request
tracking id.
</pre>

<code>.google.cloud.talent.v4.ResponseMetadata metadata = 3;</code>
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/ListTenantsResponse.java