Using Stitch QueryAnyware within a Stitch Function

[Asanqa]

Hello 

I have this user case, where a stitch function is triggered on a collection update and with in the function i have to query other collections and aggregate those data.

thus i was wondering whether it is possible to use Stitch QueryAnyware with in a Stitch function. My Questions are 

1. Whether this is possible? if so a code example would be greatly appreciated.

2. if it is not possible or not recommended to do so, whether there are any other better ways to achieve this?

Thanks