public function addShowAction($privilege = null, array $other = array())
    {
        if (isset($other['label'])) {
            $label = $other['label'];
            unset($other['label']);
        } else {
            $label = $this->_('Show');
        }

        $menu = $this->addAction($label, $privilege, 'show', $other);
        $menu->setModelParameters(1);

        return $menu;
    }