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 orchestrator(self):
        """
        :returns: Orchestrator instance.
        :rtype: Orchestrator
        """
        return self.__orchestrator