def save(self, filename=None):
        filename = Path(filename) if filename is not None else self.filename
        with filename.open("w") as f:
            f.write(self.yaml)
def activate(self):
        """
        Syntax sugar that helps at django shell with fast tenant changing

        Usage:
            Tenant.objects.get(schema_name='test').activate()
        """
        connection = connections[get_tenant_database_alias()]
        connection.set_tenant(self)