presto-parquet/src/main/java/io/prestosql/parquet/DataPageV2.java/DataPageV2/toString
class DataPageV2:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("rowCount", rowCount)
                .add("nullCount", nullCount)
                .add("repetitionLevels", repetitionLevels)
                .add("definitionLevels", definitionLevels)
                .add("dataEncoding", dataEncoding)
                .add("slice", slice)
                .add("statistics", statistics)
                .add("isCompressed", isCompressed)
                .add("valueCount", valueCount)
                .add("uncompressedSize", uncompressedSize)
                .toString();
    }