presto-orc/src/main/java/io/prestosql/orc/metadata/statistics/StringStatistics.java/StringStatistics/StringStatistics
class StringStatistics:    public StringStatistics(@Nullable Slice minimum, @Nullable Slice maximum, long sum)
    {
        checkArgument(minimum == null || maximum == null || minimum.compareTo(maximum) <= 0, "minimum is not less than maximum");
        this.minimum = minimum;
        this.maximum = maximum;
        this.sum = sum;
    }