public function execute(&$params, &$pagerenderer)
    {
        if (!is_array($params['cssFiles'])) {
            return;
        }
        $cssFilesArray = [];
        foreach ($params['cssFiles'] as $cssFile => $cssFileSettings) {
            $compiledFile = \KayStrobach\Dyncss\Service\DyncssService::getCompiledFile($cssFile);
            if ($compiledFile !== $cssFile) {
                $cssFileSettings['file'] = $compiledFile; //needed for TYPO3 4.6+ ;)
                $cssFileSettings['compress'] = 0;
                $cssFilesArray[$compiledFile] = $cssFileSettings;
            } else {
                $cssFilesArray[$cssFile] = $cssFileSettings;
            }
        }
        $params['cssFiles'] = $cssFilesArray;
    }