@Nullable
  private static ResourceBundle getResourceBundle(@NotNull AnActionEvent e) {
    final Navigatable[] data = e.getData(CommonDataKeys.NAVIGATABLE_ARRAY);
    if (data == null || data.length != 1) return null;
    if (!(data[0] instanceof ResourceBundleAwareNode)) return null;
    return ((ResourceBundleAwareNode)data[0]).getResourceBundle();
  }
@Nullable
  private static ResourceBundle getResourceBundle(@NotNull AnActionEvent e)