presto-parquet/src/main/java/io/prestosql/parquet/DataPageV1.java/DataPageV1/toString
class DataPageV1:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("slice", slice)
                .add("repetitionLevelEncoding", repetitionLevelEncoding)
                .add("definitionLevelEncoding", definitionLevelEncoding)
                .add("valuesEncoding", valuesEncoding)
                .add("valueCount", valueCount)
                .add("uncompressedSize", uncompressedSize)
                .toString();
    }