Is there any way to combine parent properties (e.g.
"publication_date") and nested-element properties (say,
"comments.content") in a single nested query (with path "comments", in
this case)? I know I could split the query in one nested part and
another non-nested one, but in my case this is not feasible, since I'm
working with rather complex, automatically generated queries. Is there
a way to do this inside a single nested query?