def on_power_source_notification(self):
        for weak_observer in self._weak_observers:
            observer = weak_observer()
            if observer:
                observer.on_power_sources_change(self)
                observer.on_time_remaining_change(self)
Called in response to IOPSNotificationCreateRunLoopSource() event.
dataset/ETHPy150Open Kentzo/Power/power/darwin.py/PowerManagement.on_power_source_notification