code: func (h *HandlerT) GoTrace(file string, nsec uint) error {
  	if err := h.StartGoTrace(file); err != nil {
  		return err
  	}
  	time.Sleep(time.Duration(nsec) * time.Second)
  	h.StopGoTrace()
  	return nil
  }
docs: // GoTrace turns on tracing for nsec seconds and writes
  // trace data to file.