updateActivity method
Implementation
Future updateActivity(String activityId, Map<String, dynamic> data,
    [AlertConfig? alertConfig]) {
  throw UnimplementedError('updateActivity() has not been implemented.');
}
Future updateActivity(String activityId, Map<String, dynamic> data,
    [AlertConfig? alertConfig]) {
  throw UnimplementedError('updateActivity() has not been implemented.');
}