docs: def set_off(self):
          """Turn the bulb off."""
          try:
              request = requests.post(
                  '{}/{}/{}/'.format(self.resource, URI, self._mac),
                  data={'action': 'off'}, timeout=self.timeout)
              if request.status_code == 200:
                  pass
          except requests.exceptions.ConnectionError:
              raise exceptions.MyStromConnectionError()