Restrict OAuth2 Provider to Specific Authentication Sources

[UpTide]

Feature Description

When acting as an OAuth2 provider, I would like to be able to restrict which authentication sources are available. That is, specifically, when acting as a provider I want to only grant an access token if they're able to authentication through a specific external authentication provider.

Is there any way to do this already? I may be missing something.

If I am able to volunteer to add this, I would ask someone with experience to please point me at the proper place you would have this implemented. I will do my best

Thanks