code: func NewServer(cfg *config.VentConfig, log *logger.Logger, consumer *Consumer) *Server {
  	// setup handlers
  	mux := http.NewServeMux()
  
  	mux.HandleFunc("/health", healthHandler(consumer))
  
  	return &Server{
  		Config:   cfg,
  		Log:      log,
  		Consumer: consumer,
  		mux:      mux,
  		stopCh:   make(chan bool, 1),
  	}
  }
docs: // NewServer returns a new HTTP server