presto-orc/src/main/java/io/prestosql/orc/OrcWriterFlushStats.java/OrcWriterFlushStats/toString
class OrcWriterFlushStats:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("stripeBytes", stripeBytes)
                .add("stripeRows", stripeRows)
                .add("dictionaryBytes", dictionaryBytes)
                .toString();
    }