Backend\Modules\Locale\Actions\ExportAnalyse::getContent PHP Method

    public function getContent()
    {
        $charset = BackendModel::getContainer()->getParameter('kernel.charset');
        // create XML
        $xmlOutput = BackendLocaleModel::createXMLForExport($this->locale);
        return new Response($xmlOutput, Response::HTTP_OK, ['Content-Disposition' => 'attachment; filename="locale_' . BackendModel::getUTCDate('d-m-Y') . '.xml"', 'Content-Type' => 'application/octet-stream;charset=' . $charset, 'Content-Length' => '' . mb_strlen($xmlOutput)]);
    }