code: def subscribe(self, sender=None, iface=None, signal=None, object=None, arg0=None, flags=0, signal_fired=None):
  		
  		callback = (lambda con, sender, object, iface, signal, params: signal_fired(sender, object, iface, signal, params.unpack())) if signal_fired is not None else lambda *args: None
  		return Subscription(self.con, sender, iface, signal, object, arg0, flags, callback)
docs: Subscribes to matching signals.
  
  		Subscribes to signals on connection and invokes signal_fired callback
  		whenever the signal is received.
  
  		To receive signal_fired callback, you need an event loop.
  		https://github.com/LEW21/pydbus/blob/master/doc/tutorial.rst#setting-up-an-event-loop
  
  		Parameters
  		----------
  		sender : string, optional
  			Sender name to match on (unique or well-known name) or None to listen from all senders.
  		iface : string, optional
  			Interface name to match on or None to match on all interfaces.
  		signal : string, optional
  			Signal name to match on or None to match on all signals.
  		object : string, optional
  			Object path to match on or None to match on all object paths.
  		arg0 : string, optional
  			Contents of first string argument to match on or None to match on all kinds of arguments.
  		flags : SubscriptionFlags, optional
  		signal_fired : callable, optional
  			Invoked when there is a signal matching the requested data.
  			Parameters: sender, object, iface, signal, params
  
  		Returns
  		-------
  		Subscription
  			An object you can use as a context manager to unsubscribe from the signal later.
  
  		See Also
  		--------
  		See https://developer.gnome.org/gio/2.44/GDBusConnection.html#g-dbus-connection-signal-subscribe
  		for more information.