class IssuanceHelper extends AbstractHelper {

  public static synchronized void resetInstance() {
    System.err.println("WARNING IssuanceHelper.resetInstance : " + instance);
    instance = null;
  }

  private  IssuanceHelper(String publicResourcesPrefix, String privateStoragePrefix);
  private  IssuanceHelper(String publicResourcesPrefix, String privateStoragePrefix,
      String[] revocationAuthorityParametersResourcesList);

}