private static void copyPredefinedMaps(File dir) {
    for (PredefinedMigrationProvider provider : PredefinedMigrationProvider.EP_NAME.getExtensionList()) {
      URL migrationMap = provider.getMigrationMap();
      String fileName = new File(migrationMap.getFile()).getName();
      copyMap(dir, migrationMap, fileName);
    }
  }
private static void copyPredefinedMaps(File dir)