anchor.diff:    CoreElement _sourcePathDiv;
   
     SourceEditor sourceEditor;
  -  DebuggerState debuggerState;
     CallStackView callStackView;
     VariablesView variablesView;
     BreakpointsView breakpointsView;
  
positive.code: 
  class DebuggerScreen extends Screen {
    DebuggerScreen()
        : super(name: 'Debugger', id: 'debugger', iconClass: 'octicon-bug') {
      deviceStatus = new StatusItem();
      addStatusItem(deviceStatus);
  
      serviceManager.onConnectionAvailable.listen(_handleConnectionStart);
      if (serviceManager.hasConnection) {
        _handleConnectionStart(serviceManager.service);
      }
      serviceManager.isolateManager.onSelectedIsolateChanged
          .listen(_handleIsolateChanged);
      serviceManager.onConnectionClosed.listen(_handleConnectionStop);
    }
  
    StatusItem deviceStatus;
  
  
negative.code:     consoleArea.refresh();
    }
  
    @override
    void entering() {
      if (!_initialized) {
        _initialize();
      }
    }
  
    void _initialize() {
      _initialized = true;
  
      serviceManager.onConnectionAvailable.listen(_handleConnectionStart);
      if (serviceManager.hasConnection) {
        _handleConnectionStart(serviceManager.service);
      }
      serviceManager.isolateManager.onSelectedIsolateChanged
          .listen(_handleIsolateChanged);
      serviceManager.onConnectionClosed.listen(_handleConnectionStop);
    }
  
    CoreElement _buildMenuNav() {
      callStackView = new CallStackView();
  
  