def test_lookup(self):
        assert event.Priority.lookup(event.Priority.CORE) is event.Priority.CORE
        assert event.Priority.lookup(event.Priority.CORE.value) is event.Priority.CORE
        assert event.Priority.lookup(-12312412) == -12312412
def __notify(self):
        if self.__observer is not None:
            self.__observer.notify(self.__means, self.__variances, self.__clusters)