Parsing subqueries

[dibsonmuad]

I'm trying to do this:

In(this=maybe_parse("col1"), expression=maybe_parse("select col2 from table2").subquery()).sql()

trying to get something like col1 IN (SELECT col2 FROM table2). However, I'm seeing col1 IN ( )

Could anyone help with this?
Thanks

[barakalon]

expression -> query

In(this=maybe_parse("col1"), query=maybe_parse("select col2 from table2").subquery()).sql()