[keycloak-user] Native iOS Facebook auth

I am seeing this thread: http://lists.jboss.org/pipermail/keycloak-user/2017-February/009592.html And I am wondering a similar question - is there a way to use native Facebook access token to authenticate with Keycloak? Facebook is saying that they want my client to update their app to use the Facebook SDK for login as opposed to non-standard SDK (i.e. AeroGear/Keycloak) I am trying to use the token provided by Facebook on successful login, with absolutely no luck. What is the recommended way (or is there a guide) on how to do this?