throw new UnimplementedException("close");
try {  _currentPointer = 0;  if (_outputStream != null) { _outputStream.close(); _outputStream = null; }  if (_writer != null) { _writer.close(); _writer = null; }  return true;  } catch (Exception ex) { log.log(Level.FINE, ex.toString(), ex); return false; }
  public boolean close(Env env)  {    throw new UnimplementedException("close");  }