Missing properties in Issue Model Class

[lalokeri]

GitLab Issue API "GET /issues/:id" includes "issue_type", "severity" and "epic", however it is missed out and not available in Issue Model Class. Please add these fields as they are relevant and important meta-data fields for smart searches on GitLab contents. Please check GitLab documentation here https://docs.gitlab.com/ee/api/issues.html#single-issue response

Example request:
curl --header "PRIVATE-TOKEN: <your_access_token>"
--url "https://gitlab.example.com/api/v4/issues/41"

Example response:
{
"id": 1,
"milestone": {
"due_date": null,
"project_id": 4,
"state": "closed",
"description": "Rerum est voluptatem provident consequuntur molestias similique ipsum dolor.",
"iid": 3,
"id": 11,
"title": "v3.0",
"created_at": "2016-01-04T15:31:39.788Z",
"updated_at": "2016-01-04T15:31:39.788Z",
"closed_at": "2016-01-05T15:31:46.176Z"
},
"author": {
"state": "active",
"web_url": "https://gitlab.example.com/root",
"avatar_url": null,
"username": "root",
"id": 1,
"name": "Administrator"
},
"description": "Omnis vero earum sunt corporis dolor et placeat.",
"state": "closed",
"iid": 1,
"assignees": [
{
"avatar_url": null,
"web_url": "https://gitlab.example.com/lennie",
"state": "active",
"username": "lennie",
"id": 9,
"name": "Dr. Luella Kovacek"
}
],
"assignee": {
"avatar_url": null,
"web_url": "https://gitlab.example.com/lennie",
"state": "active",
"username": "lennie",
"id": 9,
"name": "Dr. Luella Kovacek"
},
"type": "ISSUE",
"labels": [],
"upvotes": 4,
"downvotes": 0,
"merge_requests_count": 0,
"title": "Ut commodi ullam eos dolores perferendis nihil sunt.",
"updated_at": "2016-01-04T15:31:46.176Z",
"created_at": "2016-01-04T15:31:46.176Z",
"closed_at": null,
"closed_by": null,
"subscribed": false,
"user_notes_count": 1,
"due_date": null,
"imported": false,
"imported_from": "none",
"web_url": "http://example.com/my-group/my-project/issues/1",
"references": {
"short": "#1",
"relative": "#1",
"full": "my-group/my-project#1"
},
"time_stats": {
"time_estimate": 0,
"total_time_spent": 0,
"human_time_estimate": null,
"human_total_time_spent": null
},
"confidential": false,
"discussion_locked": false,
"issue_type": "issue",
"severity": "UNKNOWN",
"task_completion_status": {
"count": 0,
"completed_count": 0
},
"weight": null,
"has_tasks": false,
"_links": {
"self": "http://gitlab.example:3000/api/v4/projects/1/issues/1",
"notes": "http://gitlab.example:3000/api/v4/projects/1/issues/1/notes",
"award_emoji": "http://gitlab.example:3000/api/v4/projects/1/issues/1/award_emoji",
"project": "http://gitlab.example:3000/api/v4/projects/1",
"closed_as_duplicate_of": "http://gitlab.example.com/api/v4/projects/1/issues/75"
},
"moved_to_id": null,
"service_desk_reply_to": "service.desk@gitlab.com"
}

Issues created by users on GitLab Premium or Ultimate include the epic property:
{
"project_id" : 4,
"description" : "Omnis vero earum sunt corporis dolor et placeat.",
"epic": {
"epic_iid" : 5, //deprecated, use iid of the epic attribute
"epic": {
"id" : 42,
"iid" : 5,
"title": "My epic epic",
"url" : "/groups/h5bp/-/epics/5",
"group_id": 8
},
...
}