the problem is _internal_action(self, action, path, member=None, headers=None, query=None, wait=None) function,the code: ``` def callback(response): if response.code in [200, 201, 202]: result = self._check_action(response) if member: return getattr(result, member) else: self._check_fault(response) ``` should change to: ``` def callback(response): if response.code in [200, 201, 202]: result = self._check_action(response) if member: return getattr(result, member) return result else: self._check_fault(response) ``` it should retrun an action type like sdk3.