anchor.diff:    }
   
   
  -  backend.listen().then((_) {
  +  Backend.bind([], new SHA256()).then((backend) {
       backend.addDefaultHttpHeader('Access-Control-Allow-Origin','*');
       backend.addView(r'/resources', requestHandler.handleHttpRequest);
       backend.addStaticView(new RegExp(r'/.*'), '.');
  
positive.code:     new Future.value(request.args);
  
  void main() {
    Backend backend = new Backend();
    MultiRequestHandler requestHandler = new MultiRequestHandler();
    requestHandler.registerDefaultHandler(simpleClientRequestHandler);
  
  
negative.code: import 'dart:async';
  import 'package:clean_ajax/client.dart';
  import 'package:clean_ajax/client_backend.dart';
  import 'package:crypto/crypto.dart';
  
  
  // Don't run example_client.dart nor index.html instead run example_server.dart and go
  // in dartium to address 0.0.0.0:8080
  