code: @Override
    public boolean deleteOnExit(Path f)
        throws IOException {
  
      checkOpen();
  
      logger.atFine().log("GHFS.deleteOnExit: %s", f);
      boolean result = super.deleteOnExit(f);
      logger.atFine().log("GHFS.deleteOnExit:=> %s", result);
      return result;
    }
docs: =================================================================