public DebugCellData newDebugCellData() {
   final DebugCellData newData = new DebugCellData();
   newData
       .isBreakPointProperty()
       .addListener(
           new ChangeListener<Boolean>() {
             @Override
             public void changed(
                 ObservableValue<? extends Boolean> observable,
                 Boolean oldValue,
                 Boolean newValue) {
               RAM r = mediator.getMachine().getCodeStore();
               clearAllBreakPointsInRam(r);
               setBreakPointsInRam(r);
             }
           });
   return newData;
 }