@SuppressWarnings({"rawtypes"})
  @java.lang.Override
  protected com.google.protobuf.MapFieldReflectionAccessor internalGetMapFieldReflection(
      int number) {
    switch (number) {
      case 8:
        return internalGetLabels();
      default:
        throw new RuntimeException("Invalid map field number: " + number);
    }
  }
<pre>
A document translation request.
</pre>

Protobuf type {@code google.cloud.translation.v3beta1.TranslateDocumentRequest}
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/TranslateDocumentRequest.java