Adding reviewers to PR w/o username REST API

[ben-dean-ontsys]

I was wondering how I can add reviewers to a pullrequest without knowing there UUID? It doesn't look like there's a reasonable way to get the UUID with the API.

I tried using this for the post body:

{
  "title": "testing",
  "description": "This will **fail**.",
  "source": { "branch": { "name": "foo" } },
  "close_source_branch": true,
  "reviewers":[
    { "nickname": "jane-doe" }
  ]
}

And failed with:

{
  "type": "error", 
  "error": {
    "fields": {
      "reviewers": [
        "Malformed reviewers list"
      ]
    }, 
    "message": "reviewers: Malformed reviewers list"
  }
}

So what's the solution? username will still work (for now), but it seems like that's going away. These are teammates at my workplace I'm adding, not strangers. I know their usernames by a convention we use, but even in the UI I have to just start typing their display name. Maybe the answer is just don't ever expect to do anything with users, I don't know. :\