public static java.lang.String archiveResources(
      java.util.List param0,
      org.w3c.dom.Document param1,
      java.util.Stack param2,
      java.lang.String param3) {
    org.sakaiproject.content.api.ContentHostingService service = getInstance();
    if (service == null) return null;

    return service.archiveResources(param0, param1, param2, param3);
  }