Use the theInterface parameter of the beginClassNotificationForIF class to specify the interface that defines the appropriate userNotification or sysNotification method.
If the value of the eventType parameter is a system event, events are sent to the method that maps to the sysNotification method of the interface. If this parameter does not specify a system event, events are sent to the method that maps to the userNotification method of the interface.
The interface must have a defined userNotification or sysNotification method and the receiver class and its subclasses must implement the corresponding method in the interface. (For details, see "