/caldav.php/user5/addresses/sabre-vobject-34cd55a8-330f-47cd-8b69-6fbd16a0880b.vcf some valid etag BEGIN:VCARD VERSION:4.0 FN:CardDavClient Test1520108081 IMPP;X-SERVICE-TYPE=Jabber;TYPE=HOME:xmpp:foo@example.com END:VCARD HTTP/1.1 200 OK