Stolz\Assets\Manager::addCss PHP Метод

    public function addCss($asset)
    {
        if (is_array($asset)) {
            foreach ($asset as $a) {
                $this->addCss($a);
            }
            return $this;
        }
        if (!$this->isRemoteLink($asset)) {
            $asset = $this->buildLocalLink($asset, $this->css_dir);
        }
        if (!in_array($asset, $this->css)) {
            $this->css[] = $asset;
        }
        return $this;
    }