code: func setContainerPathStatHeader(stat *types.ContainerPathStat, header http.Header) error {
  	statJSON, err := json.Marshal(stat)
  	if err != nil {
  		return err
  	}
  
  	header.Set(
  		"X-Docker-Container-Path-Stat",
  		base64.StdEncoding.EncodeToString(statJSON),
  	)
  
  	return nil
  }
docs: // // Encode the stat to JSON, base64 encode, and place in a header.