public void RemoveGimmick(MapGimmickViewModel gimmickViewModel)
 {
     Gimmicks.Remove(gimmickViewModel);
     gimmickViewModel.PropertyChanged -= OnGimmickVmGimmickChanged;
     UpdateVisibleGimmick();
 }
 public void AddGimmick(MapGimmickViewModel gimmickViewModel)
 {
     Gimmicks.Add(gimmickViewModel);
     gimmickViewModel.PropertyChanged += OnGimmickVmGimmickChanged;
     UpdateVisibleGimmick();
 }