anchor.diff:      return request;
     }
   
  -  Response _handleRequest(Request req) {
  +  Future<Response> _handleRequest(Request req) async {
       final data = _parseUrl(req.url.toString());
   
       final reqInfo = new RequestInfo(
  
positive.code:     );
    }
  
    Future<Response> get(dynamic url, {Map<String, String> headers}) async
      => _handleRequest(_createRequest('GET',url,headers));
  
    Future<Response> post(dynamic url, {Map<String, String> headers,
  
negative.code:         break;
      }
  
      final duration = new Duration(milliseconds: _config.delay);
      return await new Future.delayed(duration,() => response);
    }
  
    Response _get(RequestInfo req){
  