Can't generate multiple API keys?

You can generate an API key for a user with this API call:

Request URL:http://localhost:3000/admin/users/4/generate_api_key
Request Method:POST
Request Body: 
   api_key,
   api_username

The response json will look like:

{
  "api_key": {
    "id": 2,
    "key": "630f51d28da39e969eaf26060687449df5ba443b517167a7ae393549a168bdb3",
    "user": {
      "id": 4,
      "username": "discourse2",
      "avatar_template": "/letter_avatar_proxy/v2/letter/d/4af34b/{size}.png"
    }
  }
}
4 Curtiram