API for converting Message to dbus-proxy generated signal types

I create a Connection, then I subscribe to some events using DBusProxy::add_match(), then I create MessageStream from said connection.

When I finally receive a message, I think it would be intuitive if I could write something like

let message = stream.next().await
if let Ok(signal) = PropertiesChanged::try_from(message) {
    // ...
}

Maybe I'm doing something wrong, and this is already possible? And what is the recommended way to deal with messages from different interfaces?