Function omnisensor::register_properties_changed_handler

pub(crate) async fn register_properties_changed_handler<H, R>(
    bus: &SyncConnection,
    cb: H
) -> Result<MsgMatch, Box<dyn Error>>where
    H: FnOnce(Message, String, PropMap) -> R + Send + Copy + Sync + 'static,
    R: Future<Output = ()> + Send,

Arranges for cb to be called on receipt of any PropertiesChanged dbus signals.

cb is passed the signal message, the dbus interface to which it pertains, and the associated properties.