public function render($container = null)
    {
        // Get container
        if (null !== $container) {
            $this->setContainer($container);
        }

        // Load brand
        $container = $this->getContainer();
        $brand     = $container->findOneBy('class', 'brand');
        if ($brand) {
            $container->removePage($brand);
        }

        // Render navigation bar
        $viewModel            = new ViewModel();
        $viewModel->brand     = $brand;
        $viewModel->container = $container;

        $viewModel->setTemplate('helper/navigation/bar');
        return $this->getView()->render($viewModel);
    }