How to get Google contact labels?
google-api, google-contacts-api
Solution
"Labels" = "Contact Groups"
Call the groups feed (https://www.google.com/m8/feeds/groups/default/full?v=3) and then match the group ID's to the gContact:groupMemershipInfo from the contacts.
Problem
I'm using this API to get user's contacts. I would get the label associated to a contact, but I can't find it in the documentation. I'm not talking about label property, like `<gContact:relation label="drinking buddy">Marvin</gContact:relation>` but this kind of label : If someone could tell me where to find this label.