anchor.diff:      zone_rpc(user_logic, get_clusters, [Auth]);
   
   list_user_clusters({rest, Auth}) ->
  -    case zone_rest("/user/clusters/", Auth) of
  +    case zone_rest(Auth, "/user/clusters/", []) of
           {ok, #{clusters := Ids}} -> {ok, Ids};
           #error{} = Error -> Error
       end.
  
positive.code:     end;
  
  get_details({rest, Auth}, ClusterId) ->
      URN = str_utils:format("/clusters/~s", [ClusterId]),
      case zone_rest(URN, Auth) of
          {ok, Map} ->
              Map2 = maps:without([cluster_id], Map),
              {ok, Map2#{id => ClusterId}};
  
negative.code: 
  
  %% @private
  -spec zone_rest(Auth :: oz_plugin:auth(), URNFormat :: string(),
      FormatArgs :: [term()]) -> {ok, #{atom() => term()}} | #error{}.
  zone_rest(Auth, URNFormat, FormatArgs) ->
      URN = str_utils:format(URNFormat, FormatArgs),
      case oz_endpoint:request(Auth, URN, get) of
          {ok, 200, _, BodyJson} ->
              Parsed = onepanel_utils:convert(json_utils:decode(BodyJson), {keys, atom}),
  