presto-orc/src/main/java/io/prestosql/orc/metadata/statistics/IntegerStatistics.java/IntegerStatistics/toString
class IntegerStatistics:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("min", getMin())
                .add("max", getMax())
                .add("sum", getSum())
                .toString();
    }