anchor.diff:  
     World(this.id, this.randomnumber);
   
  -  toJson() => { 'id': id, 'randomNumber': randomnumber };
  +  toJson() => {'id': id, 'randomNumber': randomnumber};
   }
   
   /// The entity used in the fortunes test.
  
positive.code: /// Responds with the database queries test to the [request].
  void _queriesTest(HttpRequest request) {
    var queries = _parseInt(request.uri.queryParameters['queries']).clamp(1, 500);
    Future.wait(new List.generate(queries,
                                  (_) => _queryRandom(),
                                  growable: false))
        .then((response) => _sendJson(request, response));
  }
  
  /// Responds with the fortunes test to the [request].
  void _fortunesTest(HttpRequest request) {
    _connectionPool.connect().then((connection) {
      return connection.query('SELECT id, message FROM fortune;')
          .map((row) => new Fortune(row[0], row[1]))
          .toList()
          .whenComplete(() { connection.close(); });
    }).then((fortunes) {
      fortunes.add(new Fortune(0, 'Additional fortune added at request time.'));
      fortunes.sort();
      _sendHtml(request, _fortunesTemplate.renderString({
        'fortunes': fortunes.map((fortune) => {
                'id': fortune.id, 'message': fortune.message
            }).toList()
      }));
    });
  }
  
negative.code: 
  /// Completes the given [request] by writing the [response] with the given
  /// [statusCode] and [type].
  void _sendResponse(HttpRequest request, int statusCode, [type, response]) {
    request.response.statusCode = statusCode;
    request.response.headers.date = new DateTime.now();
    if (type != null) {
  