code: func GenSnowflake(u *URL) (string, error) {
  	host, port, dbname := hostname(u.Host), hostport(u.Host), strings.TrimPrefix(u.Path, "/")
  	if host == "" {
  		return "", ErrMissingHost
  	}
  	if dbname == "" {
  		return "", ErrMissingPath
  	}
  	if port != "" {
  		port = ":" + port
  	}
  
  	// add user/pass
  	var user string
  	if u.User != nil {
  		user = u.User.Username()
  		if pass, _ := u.User.Password(); pass != "" {
  			user += ":" + pass
  		}
  		user += "@"
  	}
  
  	return user + host + port + "/" + dbname + genQueryOptions(u.Query()), nil
  }
docs: // GenSnowflake generates a snowflake DSN from the passed URL.