/caldav.php/user5/addresses/sabre-vobject-8121cd7a-8251-4b74-a952-ca91fdc21e36.vcf some valid etag BEGIN:VCARD VERSION:4.0 PRODID:-//Sabre//Sabre VObject 4.3.3//EN UID:sabre-vobject-8121cd7a-8251-4b74-a952-ca91fdc21e36 FN:CardDavClient Test913043917 N:Test913043917;CardDavClient;;; NICKNAME:Jonny1 EMAIL:maxmu@abcd.com X-CUSTOMPROP;X-CUSTOMPARAM=HOME,WORK:foobar REV:date END:VCARD HTTP/1.1 200 OK