Add/Edit documents?

[Bradleycorn]

This repo has great examples for consuming firestore/realtime databases using jetpack components.
I'd love to see some additional examples for adding/editing data. In particular, the typical use case of viewing a list of items, adding to it, and editing list items. That would really make this a complete example

[fabads]

I've got a similar request. I would like to change the query to observe another part of the database. Do I have to removeSource, change the query (and save the query instance to remove it later on) ?