def set_user_admin(self, username, admin):
        raise NotImplementedError
This method should be implemented by all subclasses of CommCareMobileContactMixin,
dataset/ETHPy150Open mathcamp/pypicloud/pypicloud/access/base.py/IMutableAccessBackend.set_user_admin--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/sms/mixin.py/CommCareMobileContactMixin.get_language_code