Sphinx - Extend /.well-known/openid-configuration details

It would be nice to be able to add more details to the returned document, like "jwks_uri", "issuer", etc. Is there a way? Can you add a way?

For instance, I have implemented "jwks_uri", but I will have to explicitly tell clients about it, they cannot look it up dynamically themselves from /.well-known/openid-configuration