code: public void closeFile() {
  
          if (getZipFile() != null) {
              try {
                  getZipFile().close();
              } catch (IOException e) {
                  CmsMessageContainer message = Messages.get().container(
                      Messages.ERR_IMPORTEXPORT_ERROR_CLOSING_ZIP_ARCHIVE_1,
                      getZipFile().getName());
                  if (LOG.isDebugEnabled()) {
                      LOG.debug(message.key(), e);
                  }
              }
          }
      }
docs: Closes the zip file.<p>