@property
def responses(self):
    for model_name in self._responses:
        for key in self._responses[model_name]:
            (yield (model_name, key, self._responses[model_name][key]))
@property
def responses(self):
    for model_name in self._responses:
        for key in self._responses[model_name]:
            (yield (model_name, key, self._responses[model_name][key]))