code: func (s *Server) OnStartupComplete() {
  	if caddy.Quiet {
  		return
  	}
  	for _, site := range s.sites {
  		output := site.Addr.String()
  		if caddy.IsLoopback(s.Address()) && !caddy.IsLoopback(site.Addr.Host) {
  			output += " (only accessible on this machine)"
  		}
  		fmt.Println(output)
  		log.Println(output)
  	}
  }
docs: // OnStartupComplete lists the sites served by this server
  // and any relevant information, assuming caddy.Quiet == false.