code: public alluxio.grpc.MetaCommand getCommand() {
      alluxio.grpc.MetaCommand result = alluxio.grpc.MetaCommand.valueOf(command_);
      return result == null ? alluxio.grpc.MetaCommand.MetaCommand_Unknown : result;
    }
docs: <code>optional .alluxio.grpc.meta.MetaCommand command = 1;</code>