@Nullable
  private static @PopupAdvertisement String getAdvertisementText() {
    final Shortcut shortcut = KeymapUtil.getPrimaryShortcut("PreviousTemplateVariable");
    if  (shortcut != null) {
      return GroovyBundle.message("introduce.variable.change.type.advertisement", KeymapUtil.getShortcutText(shortcut));
    }
    return null;
  }
@Nullable
  private static @PopupAdvertisement String getAdvertisementText()