async def _config_async(self):
        """
        This is called once when the main eventloop has started. this
        happens after _configure has been run.

        Widgets that need to use asyncio coroutines after this point may
        wish to initialise the relevant code (e.g. connections to dbus
        using dbus_fast) here.
        """

        This is called once when the main eventloop has started. this
        happens after _configure has been run.

        Widgets that need to use asyncio coroutines after this point may
        wish to initialise the relevant code (e.g. connections to dbus
        using dbus_fast) here.
        
libqtile/widget/base.py