Contao\Template::flushAllData PHP Method

    public function flushAllData()
    {
        @trigger_error('Using Template::flushAllData() has been deprecated and will no longer work in Contao 5.0.', E_USER_DEPRECATED);
        if (function_exists('fastcgi_finish_request')) {
            fastcgi_finish_request();
        } elseif (PHP_SAPI !== 'cli') {
            $status = ob_get_status(true);
            $level = count($status);
            while ($level-- > 0 && (!empty($status[$level]['del']) || isset($status[$level]['flags']) && $status[$level]['flags'] & PHP_OUTPUT_HANDLER_REMOVABLE && $status[$level]['flags'] & PHP_OUTPUT_HANDLER_FLUSHABLE)) {
                ob_end_flush();
            }
            flush();
        }
    }