private async Task SetCurrentNodeWithAnimationAsync(TreeNode <T, TKey> selectedNode)
{
var diffResult = TreeMenuDiff.Calculate(_currentNode, selectedNode);
diffResult
.ChangedIndexes
.Select(x => (cell: _recyclerView.FindViewHolderForLayoutPosition(x.Index), relation: x.Relation))
.Where(x => x.cell != null)
.ForEach((_, x) => _itemStateChanged(x.cell, x.relation));
_currentNode = selectedNode;
_itemCollection.CurrentNode = selectedNode;
_itemAnimator.DiffResult = diffResult;
await AnimateDiffAsync(diffResult);
NodeSelected?.Invoke(this, selectedNode);
}