def watch_name(self, name, flags=0, name_appeared=None, name_vanished=None):
		"""Asynchronously watches a bus name.

		Starts watching name on the bus specified by bus_type and calls
		name_appeared and name_vanished when the name is known to have a owner
		respectively known to lose its owner.

		To receive name_appeared and name_vanished callbacks, you need an event loop.
		https://github.com/LEW21/pydbus/blob/master/doc/tutorial.rst#setting-up-an-event-loop

		Parameters
		----------
		name : string
			Bus name to watch
		flags : NameWatcherFlags, optional
		name_appeared : callable, optional
			Invoked when name is known to exist
			Called as name_appeared(name_owner).
		name_vanished : callable, optional
			Invoked when name is known to not exist

		Returns
		-------
		NameWatcher
			An object you can use as a context manager to unwatch the name later.

		See Also
		--------
		See https://developer.gnome.org/gio/2.44/gio-Watching-Bus-Names.html#g-bus-watch-name
		for more information.
		"""
		name_appeared_handler = (lambda con, name, name_owner: name_appeared(name_owner)) if name_appeared is not None else None
		name_vanished_handler = (lambda con, name:             name_vanished())           if name_vanished is not None else None
		return NameWatcher(self.con, name, flags, name_appeared_handler, name_vanished_handler)
Asynchronously watches a bus name.

		Starts watching name on the bus specified by bus_type and calls
		name_appeared and name_vanished when the name is known to have a owner
		respectively known to lose its owner.

		To receive name_appeared and name_vanished callbacks, you need an event loop.
		https://github.com/LEW21/pydbus/blob/master/doc/tutorial.rst#setting-up-an-event-loop

		Parameters
		----------
		name : string
			Bus name to watch
		flags : NameWatcherFlags, optional
		name_appeared : callable, optional
			Invoked when name is known to exist
			Called as name_appeared(name_owner).
		name_vanished : callable, optional
			Invoked when name is known to not exist

		Returns
		-------
		NameWatcher
			An object you can use as a context manager to unwatch the name later.

		See Also
		--------
		See https://developer.gnome.org/gio/2.44/gio-Watching-Bus-Names.html#g-bus-watch-name
		for more information.