presto-main/src/main/java/io/prestosql/metadata/AggregationFunctionMetadata.java/AggregationFunctionMetadata/toString
class AggregationFunctionMetadata:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("orderSensitive", orderSensitive)
                .add("intermediateType", intermediateType)
                .toString();
    }