def __missing__(self, key):
        if self.default_factory is None:
            raise KeyError(key)
        else:
            ret = self[key] = self.default_factory(name=key)
            return ret
def deactivate(cls):
        """
        Syntax sugar, return to public schema

        Usage:
            test_tenant.deactivate()
            # or simpler
            Tenant.deactivate()
        """
        connection = connections[get_tenant_database_alias()]
        connection.set_schema_to_public()