private static void OnSelectedWebElementChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            var model = e.NewValue as WebElementInfoViewModel;

            if (model != null)
            {
                var tree = (sender as WebElementsTreeUserControl).WebElementsTreeView;
                var tvi  = SaKiWpfHelper.FindTreeViewItemForObject(tree, model);
                if (tvi == null)
                {
                    SaKiWpfHelper.ExpandCollapseItemsControl(tree);
                    tvi = SaKiWpfHelper.FindTreeViewItemForObject(tree, model);
                }

                if (tvi != null)
                {
                    ExpandElementTree(model, tree);
                    tvi.SetValue(TreeViewItem.IsSelectedProperty, true);
                }
            }
            else
            {
                model = (sender as WebElementsTreeUserControl).WebElementsTreeView.SelectedItem as WebElementInfoViewModel;
                if (model != null)
                {
                    var tvi = SaKiWpfHelper.FindTreeViewItemForObject((sender as WebElementsTreeUserControl).WebElementsTreeView, model);
                    if (tvi != null)
                    {
                        tvi.SetValue(TreeViewItem.IsSelectedProperty, false);
                    }
                }
            }
        }
        private static void ExpandElementTreeItem(WebElementInfoViewModel model, ItemsControl control)
        {
            var tvi = SaKiWpfHelper.FindTreeViewItemForObject(control, model);

            tvi?.SetValue(TreeViewItem.IsExpandedProperty, true);
        }