Is there an API that lets an application send invitations and requests to join a group?
I have checked the Google Directory API at https://developers.google.com/admin-sdk/directory/v1/reference/, but all I can find is the members API that lets an application directly add members.
What I am looking for is :
- to send a request to join a group,
- to list, accept or reject such requests,
- to send an invitation to join a group,
- to list, accept or reject such invitation.
I had no luck checking the reference, a google search and a search on stack overflow also turned out nothing. Does anyone know if such an API even exist, and if so, where can I find the documentation?