anchor.diff:  
   -spec get_user_model(ReqData::tuple(), State::string()) -> {list(), tuple(), string()}.
   get_user_model(ReqData, State) ->
  -    case api_help:id_from_path(ReqData) of
  +    case id_from_path(ReqData) of
           undefined -> % Get all users
               case wrq:get_qs_value("size",ReqData) of
                   undefined ->
  
positive.code: 
          AccToken -> {ok, AccToken, JSON}
      end.
  
negative.code:     case openidc:auth_request(ReqData) of
          {error, Msg} -> {{halt, 403}, wrq:set_resp_body(Msg, ReqData), State};
          {ok, _} ->
              Id = id_from_path(ReqData),
              case delete_streams_with_user_id(Id) of
                  {error, {Code, Body}} ->
                      ErrorString = api_help:generate_error(Body, Code),
  