public function propFindLate(DAV\PropFind $propFind, DAV\INode $node)
    {
        // If the request was made using the SOGO connector, we must rewrite
        // the content-type property. By default SabreDAV will send back
        // text/x-vcard; charset=utf-8, but for SOGO we must strip that last
        // part.
        if (false === strpos((string) $this->server->httpRequest->getHeader('User-Agent'), 'Thunderbird')) {
            return;
        }
        $contentType = $propFind->get('{DAV:}getcontenttype');
        list($part) = explode(';', $contentType);
        if ('text/x-vcard' === $part || 'text/vcard' === $part) {
            $propFind->set('{DAV:}getcontenttype', 'text/x-vcard');
        }
    }