How to use the bleak.backends.bluezdbus.defs function in bleak

if iface != defs.DEVICE_INTERFACE:
                return

            msg_path = message.path
            # the PropertiesChanged signal only sends changed properties, so we
            # need to get remaining properties from cached_devices. However, we
            # don't want to add all cached_devices to the devices dict since
            # they may not actually be nearby or powered on.
            if msg_path not in devices and msg_path in cached_devices:
                devices[msg_path] = cached_devices[msg_path]
            devices[msg_path] = (
                {**devices[msg_path], **changed} if msg_path in devices else changed
            )
        elif (
            message.member == "InterfacesRemoved"
            and message.body[1][0] == defs.BATTERY_INTERFACE
        ):
            logger.info(
                "{0}, {1} ({2}): {3}".format(
                    message.member, message.interface, message.path, message.body
                )
            )
            return
        else:
            msg_path = message.path
            logger.info(
                "{0}, {1} ({2}): {3}".format(
                    message.member, message.interface, message.path, message.body
                )
            )

        logger.info(

This method should generally not be needed by end user, since it is a DBus specific method.

        Args:
            _uuid: The characteristic to get properties for.

        Returns:
            (dict) Properties dictionary

        """
        characteristic = self.services.get_characteristic(str(_uuid))
        out = await self._bus.callRemote(
            characteristic.path,
            "GetAll",
            interface=defs.PROPERTIES_INTERFACE,
            destination=defs.BLUEZ_SERVICE,
            signature="s",
            body=[defs.GATT_CHARACTERISTIC_INTERFACE],
            returnSignature="a{sv}",
        ).asFuture(self.loop)
        return out