presto-parquet/src/main/java/io/prestosql/parquet/reader/ParquetColumnChunk.java/ParquetColumnChunk/ParquetColumnChunk
class ParquetColumnChunk:    public ParquetColumnChunk(
            Optional<String> fileCreatedBy,
            ColumnChunkDescriptor descriptor,
            Slice data)
    {
        this.fileCreatedBy = requireNonNull(fileCreatedBy, "fileCreatedBy is null");
        this.descriptor = descriptor;
        this.input = data.getInput();
    }