protected void addChild(FormGroup fw, FormElement f) {
   if (headless) {
     fw.getChildren().add(f);
   } else {
     Command create =
         AddCommand.create(domain, fw, FormPackage.eINSTANCE.getFormGroup_Children(), f);
     boolean canExecute = create.canExecute();
     System.out.println(
         "SynchronizeWorkflowFormWithClass.addChild() canExecute :"
             + fw.getId()
             + "->"
             + f
             + canExecute);
     cc.append(create);
   }
 }