public function getLiAttr()
    {
        $params = self::$_itemParams;
        $attr   = ['class' => 'li-item'];

        if (isset($params['item']['liClass'])) {
            $attr = $this->addClass($attr, $params['item']['liClass']);
        }

        if ($params['item']['last']) {
            $attr = $this->addClass($attr, 'last');
        }

        if ($params['item']['first']) {
            $attr = $this->addClass($attr, 'first');
        }

        return $this->_setActive($attr);
    }