presto-tpch/src/main/java/io/prestosql/plugin/tpch/TpchSplit.java/TpchSplit/toString
class TpchSplit:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("partNumber", partNumber)
                .add("totalParts", totalParts)
                .toString();
    }