public alluxio.grpc.ChunkOrBuilder getChunkOrBuilder() {
    if (valueCase_ == 2) {
       return (alluxio.grpc.Chunk) value_;
    }
    return alluxio.grpc.Chunk.getDefaultInstance();
  }
public alluxio . grpc . ChunkOrBuilder getChunkOrBuilder ( ) { if ( valueCase_ == 2 ) { return ( alluxio . grpc . Chunk ) value_ ; } return alluxio . grpc . Chunk . getDefaultInstance ( ) ; }
<code>optional .alluxio.grpc.block.Chunk chunk = 2;</code>