如何从Google People API检索属于特定组或标签的联系人列表

I'm trying to get a list of contacts that are in the same group by using Google People API.

I can get a list of all contacts using people/me/connections and I can get a list of all groups using contactGroups, but I cant find anywhere that tells me how to get a specific list of contacts belonging to a specific group using the resourceName of the contact group

You know how you can look for ages and then as soon as you ask for help, you find your answer? Use people.googleapis.com/v1/{resourceName=contactGroups/*} returns the resourceName of each contact within the group https://developers.google.com/people/api/rest/v1/contactGroups/get