presto-parquet/src/main/java/io/prestosql/parquet/reader/PrimitiveColumnReader.java/PrimitiveColumnReader/readPageV2
class PrimitiveColumnReader:    private ValuesReader readPageV2(DataPageV2 page)
    {
        repetitionReader = buildLevelRLEReader(columnDescriptor.getMaxRepetitionLevel(), page.getRepetitionLevels());
        definitionReader = buildLevelRLEReader(columnDescriptor.getMaxDefinitionLevel(), page.getDefinitionLevels());
        return initDataReader(page.getDataEncoding(), page.getValueCount(), toInputStream(page.getSlice()));
    }