Ability to remove property and signal handlers from the com.github.hypfvieh.bluetooth.DeviceManager

[OlegAndreych]

I have a case when the need for subscriptions for different properties comes and goes.

As a workaround, I can have a generic subscription, which will delegate to specific handlers, relieving one from the need to register handlers in the DeviceManager. But having only handlers with a lifecycle tied to the objects representing devices seems more natural.

As far as I can see, underlying org.freedesktop.dbus.connections.impl.DBusConnection already has corresponding methods.

[hypfvieh]

I added methods to remove signal handlers. But you can already do that without these methods by calling deviceManager.getDBusConnection().removeSigHandler(class, handler)

[OlegAndreych]

But you can already do that without these methods by calling deviceManager.getDBusConnection().removeSigHandler(class, handler)

Thanks for the methods and the idea.