void Move(NotifyCollectionChangedEventArgs args)
{
var count = args.NewItems.Count;
ResetGroupTracking();
if (count == 1)
{
// For a single item, we can use MoveSection and get the animation
Update(() => _collectionView.MoveSection(args.OldStartingIndex, args.NewStartingIndex));
return;
}
var start = Math.Min(args.OldStartingIndex, args.NewStartingIndex);
var end = Math.Max(args.OldStartingIndex, args.NewStartingIndex) + count;
Update(() => _collectionView.ReloadSections(CreateIndexSetFrom(start, end)));
}