code: protected CmsObject getCloneCms() throws CmsException {
  
          CmsObject cloneCms = OpenCms.initCmsObject(getCms());
          cloneCms.getRequestContext().setRequestTime(CmsResource.DATE_RELEASED_EXPIRED_IGNORE);
          return cloneCms;
      }
docs: Returns a cloned cms instance that prevents the time range resource filter check.<p>
  
  Use it always for unmarshalling and file writing.<p>
  
  @return a cloned cms instance that prevents the time range resource filter check
  
  @throws CmsException if something goes wrong