AvalonDock.TestApp.MainWindow.AddTwoDocuments_click C# (CSharp) Method

        private void AddTwoDocuments_click(object sender, RoutedEventArgs e)
        {
            var firstDocumentPane = dockManager.Layout.Descendents().OfType<LayoutDocumentPane>().FirstOrDefault();
            if (firstDocumentPane != null)
            {
                LayoutDocument doc = new LayoutDocument();
                doc.Title = "Test1";
                firstDocumentPane.Children.Add(doc);

                LayoutDocument doc2 = new LayoutDocument();
                doc2.Title = "Test2";
                firstDocumentPane.Children.Add(doc2);
            }

            var leftAnchorGroup = dockManager.Layout.LeftSide.Children.FirstOrDefault();
            if (leftAnchorGroup == null)
            {
                leftAnchorGroup = new LayoutAnchorGroup();
                dockManager.Layout.LeftSide.Children.Add(leftAnchorGroup);
            }

            leftAnchorGroup.Children.Add(new LayoutAnchorable() { Title = "New Anchorable" });

        }