private void formatOrComparatorUpdated() {
    ChoiceRenderer lcr = getRenderer();
    boolean updated;
    if (lcr == null) {
      updated = popup.setStringContent(format, choicesComparator,
                                       getStringComparator());
      editor.updateParser();
    }
    else {
      //for rendered content, it is required having a non null comparator
      updated = popup.setRenderedContent(lcr,
                                         choicesComparator == null ? comparator : choicesComparator,
                                         getStringComparator());
    }
    if (updated) {
      requestChoices();
    }
  }
private void formatOrComparatorUpdated()