private function renderCurrentTree()
    {
        $site = $this->siteManager->getContext();

        // Get all trees for this site
        $menus = $this
            ->treeManager
            ->getMenuStorage()
            ->loadWithConditions(['site_id' => $site->getId()])
        ;

        $build = [
            '#prefix' => '<div class="col-xs-12">',
            '#suffix' => '</div>',
            '#attached' => [
                'css' => [
                    drupal_get_path('module', 'ucms_tree').'/ucms_tree.css',
                ],
            ],
        ];

        foreach ($menus as $menu) {
            $build[$menu->getName()] = [
                '#theme'  => 'umenu__context_pane',
                '#tree'   => $this->treeManager->buildTree($menu->getId(), false),
                '#prefix' => "<h3>" . $menu->getTitle() . "</h3>",
            ];
        }

        return $build;
    }