code: func RandomLengthDelim(length int, delim, lang string) (string, error) {
  	g := xkcdpwgen.NewGenerator()
  	g.SetNumWords(length)
  	g.SetDelimiter(delim)
  	g.SetCapitalize(delim == "")
  	if err := g.UseLangWordlist(lang); err != nil {
  		return "", err
  	}
  	return string(g.GeneratePassword()), nil
  }
docs: // RandomLengthDelim returns a random passphrase combined from the desired number
  // of words and the given delimiter. Words are drawn from lang