API to get lists of threads and media uploads for the Group by ApplicationKey

Hello everybody.

As we don't store Telligent Group IDs in our external system - if there is a way to pool those lists by ApplicationKey, that we do store?

We found following endpoints, but they will not work for us, as we don't have "groupIds"...

1. https://community.telligent.com/community/10/w/api-documentation/61607/list-media-rest-endpoint 

GET api.ashx/v2/groups/{groupid}/media/files.json

2. https://community.telligent.com/community/10/w/api-documentation/61546/list-forum-thread-rest-endpoint 

GET api.ashx/v2/groups/{groupid}/forums/threads.xml.json

We are on v

Thanks, Vitaliy.