code: public com.google.protobuf.Any getServiceData() {
      return serviceData_ == null ? com.google.protobuf.Any.getDefaultInstance() : serviceData_;
    }
docs: <pre>
  Other service-specific data about the request, response, and other
  activities.
  </pre>
  
  <code>.google.protobuf.Any service_data = 15;</code>