@Override
 protected void onDestroy() {
   listeners.clear();
   if (selectWindow != null) {
     selectWindow.destroy();
   }
   super.onDestroy();
 }
 public void setClsValues(Collection<EntityData> newValues) {
   this.values = newValues;
   super.setValue(values == null ? "" : UIUtil.prettyPrintList(values));
   notifySelectionListeners(new SelectionEvent(this));
 }