throws ChoiceSetNotFound
  public ChoiceSet getChoiceSet()  throws ChoiceSetNotFound  {    if ((this.choiceSet == null) && (this.choiceSetId != null)        && (this.getSignet() != null))    {      try      {        this.choiceSet        	= (ChoiceSetImpl)        			(this.getSignet().getChoiceSet(this.choiceSetId));      }      catch (ObjectNotFoundException onfe)      {        throw new ChoiceSetNotFound(onfe);      }    }    return this.choiceSet;  }