code: def create_alarm_subscription(self,
                                    on_data=None,
                                    timeout=60):
          
          manager = WebSocketSubscriptionManager(self._client, resource='alarms')
  
          # Represent subscription as a future
          subscription = AlarmSubscription(manager)
  
          wrapped_callback = functools.partial(
              _wrap_callback_parse_alarm_data, subscription, on_data)
  
          manager.open(wrapped_callback, instance=self._instance,
                       processor=self._processor)
  
          # Wait until a reply or exception is received
          subscription.reply(timeout=timeout)
  
          return subscription
docs: Create a new alarm subscription.
  
          :param on_data: Function that gets called with  :class:`.AlarmEvent`
                          updates.
          :param float timeout: The amount of seconds to wait for the request
                                to complete.
  
          :return: A Future that can be used to manage the background websocket
                   subscription.
          :rtype: .AlarmSubscription