[keycloak-user] Radius integration

Hi, I'm on a new project with a new customer who is only exposing a RADIUS interface for authentication. Since Keycloak is part of our target architecture, we are looking into ways to integrate with RADIUS. Therefor, I'm asking for your advice what would be the best way to go further. Is it possible to write a keycloak plugin, using the User Ferederation or Authentication concepts from Keycloak? Does it even make sense? I googled a lot and didn't find anything related. Thanks, Catalin