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:                     end;
                  true ->
                      erlang:display("SUBSCRIPTION!"),
                      Id = id_from_path(ReqData),
                      {Json,_,_} = api_help:json_handler(ReqData,State),
                      StreamId = case lib_json:get_field(Json,"stream_id") of
                          undefined ->
  