Prado\Web\UI\TClientScriptManager::registerStyleSheet PHP Метод

    public function registerStyleSheet($key, $css, $media = '')
    {
        $this->_styleSheets[$key] = $css;
        $params = func_get_args();
        $this->_page->registerCachingAction('Page.ClientScript', 'registerStyleSheet', $params);
    }