getValues method
Returns a list of atNotification sorted on notification date time.
Implementation
@Deprecated('highly inefficient')
Future<List> getValues() async {
var returnList = [];
var notificationLogMap = await _toMap();
returnList = notificationLogMap!.values.toList();
returnList.sort(
(k1, k2) => k1.notificationDateTime.compareTo(k2.notificationDateTime));
return returnList;
}