public alluxio.grpc.RegisterCommand getRegisterCommand() {
    return registerCommand_ == null ? alluxio.grpc.RegisterCommand.getDefaultInstance() : registerCommand_;
  }
public alluxio . grpc . RegisterCommand getRegisterCommand ( ) { return registerCommand_ == null ? alluxio . grpc . RegisterCommand . getDefaultInstance ( ) : registerCommand_ ; }
<code>optional .alluxio.grpc.job.RegisterCommand registerCommand = 3;</code>