notificationRepository method
Implementation
@override
NotificationRepository? notificationRepository(String? appId) {
if ((appId != null) && (_notificationRepository[appId] == null)) {
_notificationRepository[appId] = NotificationCache(NotificationFirestore(
() => appRepository()!.getSubCollection(appId, 'notification'),
appId));
}
return _notificationRepository[appId];
}