anchor.diff:    startServer();
     var remote = spawnRemote("not_implemented");
     for(int i = 0; i < 10; i++){
  -    remote.add("abc${i}def");
  +    remote.add({'msg': 'hello', 'id': i});
     }
   }
  
positive.code: 
    Socket.connect('127.0.0.1',12345)
      .then((s){
          socket = s;
          untilSignal.complete();
      });
  
negative.code:   _onData(data){
      data = new String.fromCharCodes(data);
      for(String s in decode(data)){
        print("${s.runtimeType} : $s");
      }
    }
    conn.listen(_onData, onError: _onError, onDone: _onDone);
  