code: func (conn *Connection) ConnectedServer() string {
  	if conn.Nats() == nil {
  		return "unknown"
  	}
  
  	url, err := url.Parse(conn.nats.ConnectedUrl())
  	if err != nil {
  		return "unknown"
  	}
  
  	return fmt.Sprintf("nats://%s:%s", strings.TrimSuffix(url.Hostname(), "."), url.Port())
  }
docs: // ConnectedServer returns the URL of the current server that the library is connected to, "unknown" when not initialized