[keycloak-user] Custom user storage (external user DB) + Social Login

Hi there! I am currently implementing a custom `UserStorageProvider`. The Module does NOT store the user into Keycloak but rather in-memory. This is the, let's say, opposite of the Import method for a `UserStorageProvider`. For reference: http://www.keycloak.org/docs/latest/server_development/index.html#_user-s... So, the user is properly Authenticated against the external User database/service and is into the `loadedUsers` in-memory Keycloak store. What about with a Facebook login then? How can the FB login be intercepted in the same way than for a usual username/password login so that the user is not stored into the Keycloak database but rather into the external user database/service? Thanks in advance for any hints! Cheers,