anchor.diff:           pull_req_comments/3,
            %% Users
            user/1,
  +         user/2,
  +         repo/2,
            repos/2,
            repos/3,
            all_repos/2,
  
positive.code:     api_call_json_result(Cred, Url).
  
  %% Repos
  
  -spec repos(credentials(), map()) -> result().
  repos(Cred, Opts) ->
  
negative.code: make_url(user, {}) ->
      Url = ?GITHUB_API ++ "/user",
      io_lib:format(Url, []);
  make_url(user, {Username}) ->
      Url = ?GITHUB_API ++ "/users/~s",
      io_lib:format(Url, [Username]);
  
  %% Organizations
  make_url(orgs, {undefined}) ->
  