Document planned deprecation of 'projects' and 'shared_projects' attributes in...

Document planned deprecation of 'projects' and 'shared_projects' attributes in Groups API in GitLab 13.0

doc/api/groups.md

@@ -240,6 +240,10 @@ Example response:
 ]
 ```
 
+NOTE: **Note:**
+
+To distinguish between a project in the group and a project shared to the group, the `namespace` attribute can be used. When a project has been shared to the group, its `namespace` will be different from the group the request is being made for.
+
 ## Details of a group
 
 Get all details of a group. This endpoint can be accessed without authentication
@@ -255,7 +259,7 @@ Parameters:
 | ------------------------ | -------------- | -------- | ----------- |
 | `id`                     | integer/string | yes      | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user. |
 | `with_custom_attributes` | boolean        | no       | Include [custom attributes](custom_attributes.md) in response (admins only). |
-| `with_projects`          | boolean        | no       | Include details from projects that belong to the specified group (defaults to `true`). |
+| `with_projects`          | boolean        | no       | Include details from projects that belong to the specified group (defaults to `true`). (Deprecated, [will be removed in 13.0](https://gitlab.com/gitlab-org/gitlab/-/issues/213797). To get the details of all projects within a group, use the [list a group's projects endpoint](#list-a-groups-projects).)  |
 
 ```shell
 curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/4
@@ -578,6 +582,10 @@ This endpoint returns:
   and later. To get the details of all projects within a group, use the
   [list a group's projects endpoint](#list-a-groups-projects) instead.
 
+NOTE: **Note:**
+
+The `projects` and `shared_projects` attributes [will be deprecated in GitLab 13.0](https://gitlab.com/gitlab-org/gitlab/-/issues/213797). To get the details of all projects within a group, use the [list a group's projects endpoint](#list-a-groups-projects) instead.
+
 Example response:
 
 ```json

ee/changelogs/unreleased/213797-deprecate-projects-and-shared_projects-from-groups-api-response.yml

+---
+title: Document planned deprecation of 'projects' and 'shared_projects' attributes
+  in Groups API in GitLab 13.0
+merge_request: 29113
+author:
+type: deprecated