Networking\InitCmsBundle\Menu\MenuBuilder::addNodeToMenu PHP Method

    public function addNodeToMenu(Menu $menu, MenuItem $node, $startDepth)
    {
        if ($node->getLvl() < $startDepth) {
            return false;
        }
        if ($node->getLvl() > $startDepth) {
            $menu = $this->getParentMenu($menu, $node);
        }
        if (is_object($menu)) {
            $knpMenuNode = $this->createFromMenuItem($node);
            if (!is_null($knpMenuNode)) {
                $menu->addChild($knpMenuNode);
                $knpMenuNode->setAttribute('class', $node->getLinkClass());
                if ($node->getVisibility() != MenuItem::VISIBILITY_PUBLIC && !$this->isLoggedIn) {
                    $knpMenuNode->setDisplay(false);
                }
                return $knpMenuNode;
            }
        }
        return false;
    }