code: def _load_11_6(self, **kwargs):
          
          if self._check_existence_by_collection(self._meta_data['container'], kwargs['name']):
              return super(Protocol_Sip, self)._load(**kwargs)
          msg = 'The application resource named, {}, does not exist on the device.'.format(kwargs['name'])
          resp = Response()
          resp.status_code = 404
          ex = HTTPError(msg, response=resp)
          raise ex
docs: Must check if rule actually exists before proceeding with load.