code: @Override
    public Compressor createCompressor() {
      if (!isNativeCodeLoaded()) {
        throw new RuntimeException("native lz4 library not available");
      }
      int bufferSize = conf.getInt(
          IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_KEY,
          IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_DEFAULT);
      System.out.println("Create Lz4hc codec");
      return new Lz4Compressor(bufferSize, true);
    }
docs: Create a new {@link Compressor} for use by this {@link CompressionCodec}.
  
  @return a new compressor for use by this codec