@Override
 public void setTargetObject(EObject target) {
   super.setTargetObject(target);
   if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) {
     _opSelectorComposite.setTargetObject((EObject) target);
   }
 }
 @Override
 public void setTargetObject(Object target) {
   super.setTargetObject(target);
 }