When there is a need to check is OIDC flow involved and do some work depending on that (sending/requesting additional data) it would be really nice to have such ability on a library level not on consumer/oauth server implementation level.
Of course it could be done in couple ways like checking for scope in authorization code grant or verifying original/initials scopes in refresh grant type, etc but there would be differences in implementation between grant types (kind of leaky abstraction) and unified process/mechanism would be beneficial.
Perhaps it could be done on a class Request level.