Activity does not contain data nor link of Drive attachments

[GoogleCodeExporter]

How does the product behavior differ from your expectations?
I do a new Google+ post that has a link to a Drive document, slides or it is a 
poll. Now the Activity (JSON) returned by the Plus Domains API does not have 
any information about the link nor attachment.

Describe, step-by-step, how to reproduce this issue.

1) write a new post in plus.google.com which has a link to Drive document. Link 
attached with "add link" button.

2) I read the activities list with Plus Domains API and all information about 
the linked attachment is missing. There's only the hand typed text left (as a 
"note" see below)
https://developers.google.com/+/domains/api/activities/list

"verb": "post",
   "object": {
    "objectType": "note",
    "content": "Link to Slides\ufeff",
    "originalContent": "Link to Slides"

Describe the impact of this bug
It is impossible to fully utilize the Activity data in our own application.

When does the bug occur?
Always.

Describe any workarounds you have found
No workarounds.

Original issue reported on code.google.com by jari.kin...@gapps.fi on 9 Jun 2015 at 2:42

[GoogleCodeExporter]

Ok I added the issue under component "REST-API" though it actually should have 
been under "Domains API", but I guess it applies to both.

Original comment by jari.kin...@gapps.fi on 9 Jun 2015 at 4:12