Iterator choiceIterator = choices.iterator(); while (choiceIterator.hasNext()) { Choice choice = (Choice)(choiceIterator.next()); if (choice instanceof ChoiceImpl) { ((ChoiceImpl)choice).setSignet(this.signet); } }
  void setChoices(Set choices)  {    this.choices = choices;        Iterator choiceIterator = choices.iterator();    while (choiceIterator.hasNext())    {      Choice choice = (Choice)(choiceIterator.next());      if (choice instanceof ChoiceImpl)      {        ((ChoiceImpl)choice).setSignet(this.signet);      }    }  }