public function xmlSitemapGz()
{
if (file_exists($this->metaService->getSiteMapPath(true))) {
header("Content-Type: text/xml");
header("Content-Encoding: gzip");
exit(file_get_contents($this->metaService->getSiteMapPath(true)));
} else {
header("HTTP/1.0 404 Not Found");
exit('Sitemap generation in progress...');
}
}