code: func askToTrustHost(addr, algo, fingerprint string) bool {
  	var ans string
  
  	fmt.Fprintf(os.Stderr, promptToTrustHost, addr, algo, fingerprint)
  	fmt.Scanf("%s\n", &ans)
  
  	ans = strings.ToLower(ans)
  	if ans != "yes" && ans != "y" {
  		return false
  	}
  
  	return true
  }
docs: // askToTrustHost prompts the user to trust a new key fingerprint while connecting to a host