[ Version ( since = "2.26" ) ]
public delegate void BusNameVanishedCallback (DBusConnection connection, string name)
Invoked when the name being watched is known not to have to have an owner.
This is also invoked when the DBusConnection on which the watch was established
has been closed. In that case,
connection will be null.
The DBusConnection the name is being watched on, or null.
The name being watched.
User data passed to