public function davMount(ResponseInterface $response, $uri)
    {
        $response->setStatus(200);
        $response->setHeader('Content-Type', 'application/davmount+xml');
        ob_start();
        echo '<?xml version="1.0"?>', "\n";
        echo "<dm:mount xmlns:dm=\"http://purl.org/NET/webdav/mount\">\n";
        echo '  <dm:url>', htmlspecialchars($uri, ENT_NOQUOTES, 'UTF-8'), "</dm:url>\n";
        echo '</dm:mount>';
        $response->setBody(ob_get_clean());
    }