def METHOD_NAME(self, object_preview):
    """
    Called after the object has been deleted.
    Defaults to add :meth:`.get_success_message` as a django messages
    success message if :meth:`.get_success_message` returns anything.
    You can override this to add multiple messages or to show messages in some other way.
    """
    success_message = self.get_success_message(object_preview)
    if success_message:
        messages.success(self.request, success_message)