def test_order(self):
        assert (event.Priority.PRE_CORE
                > event.Priority.CORE
                > event.Priority.POST_CORE
                > event.Priority.PRE_DEFAULT
                > event.Priority.DEFAULT
                > event.Priority.POST_DEFAULT)
def deserialize(self, value):
        value = decode(value)
        validators.validate_choice(value.lower(), self.levels.keys())
        return self.levels.get(value.lower())