     /**
      *  @private
      */
-     // FIXME (chiedozi): Should this be on base class?
     override mx_internal function set navigationStack(value:NavigationStack):void
     {
         super.navigationStack = value;

    //----------------------------------
    //  poppedViewReturnedObject
    //----------------------------------
    // FIXME (chiedozi): PARB - HTTPService uses lastResult, maybe we should match - lastReturnedObject?
    private var _poppedViewReturnedObject:ViewReturnObject = null;

    /**

        // Deactivate the current view
        if (currentViewDescriptor)
        {
            currentView = currentViewDescriptor.instance;
            currentView.setActive(false);
            
            // Need to validateNow() to make sure our old screen is currently 
            // up to date before starting the transition and possibly storing a bitmap 
            // for the transition
            currentView.validateNow();
        }
        
        // Store new view
