[FR] Documentation on how to use Firebase Admin SDK to interact with Firestore

The docs for using the Firebase Admin SDK with the Real Time Database are easy to find. > https://firebase.google.com/docs/database/admin/start

I can't find anything similar for how to use the Firebase Admin SDK with Cloud Firestore?

Been scraping for examples of using the Firestore Admin SDK with Firestore online and on StackOverFlow but feel like I am missing something.

For example I need to perform a query on a collection. The documentation for Firestore is great, https://firebase.google.com/docs/firestore/query-data/queries#web-version-9_3, but I can't find documentation on how to do the same with the same query on Firestore with the Admin SDK.

**Describe the solution you'd like**
I would love a section in the documentation for how to use the Admin SDK, similar to how the Real Time Database is documented.

**Describe alternatives you've considered**
I've been searching for examples of Firestore Queries. Tried loads. Still confused.