Generic OAuth 2.0 authmodule

Is there any way to have YouTrack configured to work with a generic OAuth provider other than the specific ones provided out of the box?  We use a COTS system internally, but the expected URL endpoints are slightly different than the ones GitHub and the other options expect so I am unable to use it.  I was hoping that there would be a custom authmodule I could drop into place to support this, but thus far I have not seen that this is possible.

Thanks