I was checking the example for federation-properties-example.  In both examples when you sync all users, it just checks for the users in the properties file and adds it to keycloak if it doesnt exist.
If I want to do it both ways, so it adds users from keycloak to my database, and users from my database to keycloak.  Should I add them here?  I am not managing any password on my database, so i just need user id and username and maybe email.

Also when I add a new user I can tell that syncronizeRegistrations() is being called but it is null.  In order to create a new user in my database, should I call a create user function to my database here.

Thanks,