presto-orc/src/main/java/io/prestosql/orc/metadata/statistics/StringStatistics.java/StringStatistics/addHash
class StringStatistics:    @Override
    public void addHash(StatisticsHasher hasher)
    {
        hasher.putOptionalSlice(minimum)
                .putOptionalSlice(maximum)
                .putLong(sum);
    }