public function addNavigation($name, $label, $url, $active = false)
    {
        if (is_array($url)) {
            $url = http_build_query($url);
        }

        $command = $this->addCommand($name, array(
            'label' => $label,
        ))->getCommand($name)
          ->href($url);

        if ($active) {
            $command->class('active', ' ');
        }

        return $command;
    }