def media_play(self):
        self.telnet_command("NS9A")
Given three Deferreds, one chained to the next chained to the next,
dataset/ETHPy150Open home-assistant/home-assistant/homeassistant/components/media_player/denon.py/DenonDevice.media_play--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_defer.py/DeferredTestCase.test_resultOfDeferredResultOfDeferredOfFiredDeferredCalled