VisualUIAVerify.Controls.AutomationElementTreeNode.FindOrInsertChildElement C# (CSharp) Method

        internal AutomationElementTreeNode FindOrInsertChildElement(AutomationElement automationElement)
        {
            Debug.WriteLine("InsertChildElement ENTER");

            // this variable will hold the currentTestTypeRootNode for inserted automationElement
            AutomationElementTreeNode node = null;

            // if there is some currentTestTypeRootNode inserted before then try to find if it is not currentTestTypeRootNode for this automationElement
            if (this._newChildElementInserted || this._childrenStatus == ChildrenElementsStatus.Populated)
            {
                Debug.WriteLine("finding currentTestTypeRootNode for the element");
                try
                {
                    node = FindChildNodeForAutomationElementInternal(automationElement);
                }
                catch { /* it does not matter */ }
            }

            //if we didn't find child currentTestTypeRootNode for automationElement then create it
            if (node == null)
            {
                Debug.WriteLine("creating new currentTestTypeRootNode for the element");

                TreeNode newNode = CreateTreeNodeForAutomationElement(automationElement);

                this._newChildElementInserted = true;

                //add this new children to collection; we can call clear when there is no element inserted before

                //because this method does not have to be synchronized, we call AddChildrenNodesToTree directly
                //without using SyncManager
                if(this.AutomationElementTreeControl.InvokeRequired)
                {
                    this.AutomationElementTreeControl.Invoke(
                        new AddChildrenNodesToTreeNodeDelegate(AddChildrenNodesToTreeNodeInternal),
                        new TreeNode[] { newNode }, false, true);
                }
                else
                {
                    AddChildrenNodesToTreeNodeInternal(new TreeNode[] { newNode }, false, true);
                }

//                AddChildrenNodesToTreeNode(new TreeNode[] { newNode }, false, true);
                
                node = (AutomationElementTreeNode)newNode.Tag;
            }

            Debug.WriteLine("InsertChildElement EXIT");
            return node;
        }

        /// <summary>
        /// this method will build currentTestTypeRootNode tree from rootNode to last item in path
        /// </summary>
        /// <returns>Returns last created AutomationElementTreeNode</returns>
        private AutomationElementTreeNode BuildNodeTreePath(AutomationElementTreeNode rootNode, Stack <AutomationElement> path)
        {
            // local variable to store current currentTestTypeRootNode
            AutomationElementTreeNode currentNode = rootNode;

            while (path.Count > 0 && currentNode != null)
            {
                AutomationElement elementOnPath = path.Pop();

                Debug.WriteLine("finding/inserting child currentTestTypeRootNode for automation element");
                currentNode = currentNode.FindOrInsertChildElement(elementOnPath);
                Debug.WriteLine("finding/inserting complete");
            }

            return(currentNode);
        }