anchor.diff:  import 'dart:io';
   
  +class index {
  +  String name = 'index';
  +
  +  void GET() {
  +  }
  +}
  +
   // simulate urls in web.py
  -// no set literal in Dart, so use Map instead of Set
  +// Set literal is not supported in Dart, so use Map instead of Set
   // @see https://code.google.com/p/dart/issues/detail?id=3792
  -final Map<String, String> urls = {
  -  '/': 'index'
  +final Map<String, Object> urls = {
  +  '/': new index()
   };
   
   class application {
     // simulate web.application in web.py
     final String HOST = 'localhost';
     final int PORT = 8080;
  -  Map<String, String> urls;
  +  Map<String, Object> urls;
   
  -  application(Map<String, String> urls) {
  +  // constructor
  +  application(Map<String, Object> urls) {
       this.urls = urls;
     }
   
  
positive.code:   void info() {
      print('HOST: ${HOST}');
      print('PORT: ${PORT}');
      print('urls: ${urls}');
    }
  
    void run() {
  
negative.code: 
  void main() {
    application app = new application(urls);
    print(app.runtimeType.toString());
    app.info();
    app.run();
  }
  