Function startNode

test/fixtures/snapshot/typescript.js:140843–140851

* Add a new level of NavigationBarNodes. * This pushes to the stack, so you must call `endNode` when you are done adding to this node.

(node, name)

         * This pushes to the stack, so you must call `endNode` when you are done adding to this node.
         */
        function startNode(node, name) {
            var navNode = emptyNavigationBarNode(node, name);
            pushChild(parent, navNode);
            // Save the old parent
            parentsStack.push(parent);
            trackedEs5ClassesStack.push(trackedEs5Classes);
            trackedEs5Classes = undefined;
            parent = navNode;
        }
        /** Call after calling `startNode` and adding children to it. */
        function endNode() {
            if (parent.children) {