def attach_endpoint(self, endpoint_):
        raise Exception("Can't attach endpoint to  port %s.%s with id: %s" % (
            self.owner.name, self.name, self.id))
Test get_perm_key function.
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/actor/actorport.py/Port.attach_endpoint--crossover with--dataset/ETHPy150Open allegro/ralph/src/ralph/lib/table/tests.py/TableRenderTestCase.test_queryset_render