When registering a beginClassesNotification with the includeSubclasses parameter set to true, the only subclasses that are included are those that exist at that time. If the user creates (subclasses) dynamic classes after the registration, these classes do not receive notifications. This also applies if the dynamic classes exist but they are then deleted and subsequently recreated.

The endClassesNotification method raises an exception if a dynamic subclass has been deleted after the call to the beginClassesNotification method.