presto-parquet/src/main/java/io/prestosql/parquet/reader/PrimitiveColumnReader.java/PrimitiveColumnReader/PrimitiveColumnReader
class PrimitiveColumnReader:    public PrimitiveColumnReader(RichColumnDescriptor columnDescriptor)
    {
        this.columnDescriptor = requireNonNull(columnDescriptor, "columnDescriptor");
        pageReader = null;
    }