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 notify(self, means, covariances, clusters):
        """!
        @brief This method is used by the algorithm to notify observer about changes where the algorithm
                should provide new values: means, covariances and allocated clusters.