presto-parser/src/main/java/io/prestosql/sql/tree/WithQuery.java/WithQuery/toString
class WithQuery:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("query", query)
                .add("columnNames", columnNames)
                .omitNullValues()
                .toString();
    }