private static int getVersion(@NotNull Element element) {
    String versionStr = element.getAttributeValue(VERSION_ATTR);
    if (versionStr == null) {
      return 0;
    }
    else {
      try {
        return Integer.parseInt(versionStr);
      }
      catch (NumberFormatException nfe) {
        return CURR_VERSION;
      }
    }
  }
private static int getVersion(@NotNull Element element)