public function addAction($label, $privilege = null, $action = 'index', array $other = array())
    {
        $other['label']      = $label;
        $other['controller'] = $this->get('controller');
        $other['action']     = $action;

        if (null === $privilege) {
            $privilege = $this->get('privilege');
        }

        if (null !== $privilege) {
            $other['privilege'] = $privilege;
        }

        return $this->add($other);
    }