anchor.diff:  
   
   void getUsers(Event e) {
  -  var url = "http://localhost:8080/admin/user";
  +  
  +  var basic = "Basic " + token;
  +  Map header =  {'Authorization': basic};
  +  
  +  HttpRequest.request(usersUrl, requestHeaders : header).then((HttpRequest req) {
   
  -  var basic = "Basic " + tokenid;
  -  requestDos = new HttpRequest();
  -  requestDos.onReadyStateChange.listen(userListener);
  -  requestDos.open('GET', url);
  -  requestDos.setRequestHeader('Authorization', basic);
  -  requestDos.send();  
  +     //Map data = JSON.decode(req.response);
  +
  +     draw(req.response);
  +
  +   });
  +
   }
  
positive.code: ButtonElement inButton;
  ButtonElement userButton;
  
  var request;
  var requestDos;
  var serverResponse;
  var tokenid = "";
  
  void main() {
    initNavMenu();
    inButton = querySelector('#inButton');
    inButton.onClick.listen(getResponse);
  
    userButton = querySelector('#userButton');
    userButton.onClick.listen(getUsers);
  
negative.code:     showButtonsForUser();
  }
  
  void draw(String name) {
    querySelector('#resp').text = name;
  }
  
  