Contao\Automator::purgeSearchCache PHP Method

    public function purgeSearchCache()
    {
        $strCacheDir = str_replace(TL_ROOT . DIRECTORY_SEPARATOR, '', \System::getContainer()->getParameter('kernel.cache_dir'));
        $objFolder = new \Folder($strCacheDir . '/contao/search');
        $objFolder->purge();
        // Add a log entry
        $this->log('Purged the search cache', __METHOD__, TL_CRON);
    }