/caldav.php/user5/addresses/sabre-vobject-131cdf91-5460-423b-a836-e420e5affe13.vcf some valid etag BEGIN:VCARD VERSION:4.0 PRODID:-//Sabre//Sabre VObject 4.3.3//EN UID:sabre-vobject-131cdf91-5460-423b-a836-e420e5affe13 FN:CardDavClient Test212420682 N:Test212420682;CardDavClient;;; NICKNAME:Jonny0 EMAIL;TYPE=HOME:john6doe@example.com EMAIL;TYPE=WORK:doe6@example.com X-CUSTOMPROP;X-CUSTOMPARAM=WORK:foobar REV:date END:VCARD HTTP/1.1 200 OK