*/
  public int getIOMode()  {    if (file_ == null || !file_.exists())    {      return NO_IO;    }        int mode = NO_IO;    if (file_.canRead())    {      mode |= READ;    }    /* disabled until bug fixed    if (file_.canWrite())    {      mode |= WRITE;      mode |= UPDATE;    }    */    return mode;  }