code: func FlagErrorFunc(cmd *cobra.Command, err error) error {
  	if err == nil {
  		return nil
  	}
  
  	usage := ""
  	if cmd.HasSubCommands() {
  		usage = "\n\n" + cmd.UsageString()
  	}
  	return StatusError{
  		Status:     fmt.Sprintf("%s\nSee '%s --help'.%s", err, cmd.CommandPath(), usage),
  		StatusCode: 125,
  	}
  }
docs: // FlagErrorFunc prints an error message which matches the format of the
  // docker/docker/cli error messages