def fire_list_changed(self):
        self.list_changed = ListModelEvent()
No message will be sent if contact doesn't have an associated connection.
dataset/ETHPy150Open enthought/pyface/pyface/list_box_model.py/ListBoxModel.fire_list_changed--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/custom/ewsghana/tests/test_notifications.py/SMSNotificationTestCase.test_no_connections