void DrawScrollerDebug(Rect rect)
 {
     if (thisSystemIsReady)
     {
         string     result    = "";
         IUIManager uiManager = uiManagerAdaptor.GetUIManager();
         result += "scroller: ";
         IScroller handlingScroller = uiManager.GetInputHandlingScroller();
         if (handlingScroller != null)
         {
             result += handlingScroller.GetName() + "\n";
         }
         else
         {
             result += "null\n";
         }
         result += "event: " + uiManager.GetEventName();
         GUI.Label(
             rect,
             result
             );
     }
 }