code: func (p *Progress) Update(message string) {
  	switch p.state {
  	case "|":
  		p.state = "/"
  	case "/":
  		p.state = "-"
  	case "-":
  		p.state = "\\"
  	case "\\":
  		p.state = "|"
  	}
  	if message != "" {
  		p.message = message
  	}
  }
docs: //Update the status of the Progress