anchor.diff:    PaginationHelper(this.github);
   
     Stream<http.Response> fetchStreamed(String method, String path, {int pages,
  -      bool reverse: false, int start, Map<String, String> headers,
  -      Map<String, dynamic> params, String body, int statusCode: 200}) {
  +      int start, Map<String, String> headers, Map<String, dynamic> params,
  +      String body, int statusCode: 200}) {
       if (headers == null) headers = {};
       var controller = new StreamController.broadcast();
   
  
positive.code:     return fetchStreamed(method, path,
          pages: pages,
          start: start,
          reverse: reverse,
          headers: headers,
          params: params,
          body: body,
  
negative.code:   }
  
    Stream<T> objects(String method, String path, JSONConverter converter,
        {int pages, int start, Map<String, String> headers,
        Map<String, dynamic> params, String body, int statusCode: 200,
        String preview}) {
      if (headers == null) headers = {};
  