Update user profile fields according to info send by OAuth2 authorization server

When a user is created using OAuth2 authentication profile fields are filled with his/her details (firstname, lastname, whatever else is sent from auth server..).

But when the user logs again and his/her details changed in the meantime, these details are not propagated into his/her profile.

There is a piece of code in auth/oauth2/classes/auth.php with:

/**

     * Indicates if moodle should automatically update internal user

     * records with data from external sources using the information

     * from auth_plugin_base::get_userinfo().

     *

     * @return bool true means automatically copy data from ext to user table

     */

    public function is_synchronised_with_external() {

        return false;

    }

which seems to be like a good place to start.
Am I missing something or is this functionality already pressent, but hidden somewhere?

There is also MDL-58090 which says in description:

5. Implement a new auth plugin that displayes the installed OAuth services in a list on the login page and will login and update the user details via OAuth.