code: func NewDNSProvider() (*DNSProvider, error) {
  	values, err := env.Get("ZONEEE_API_USER", "ZONEEE_API_KEY")
  	if err != nil {
  		return nil, fmt.Errorf("zoneee: %v", err)
  	}
  
  	rawEndpoint := env.GetOrDefaultString("ZONEEE_ENDPOINT", defaultEndpoint)
  	endpoint, err := url.Parse(rawEndpoint)
  	if err != nil {
  		return nil, fmt.Errorf("zoneee: %v", err)
  	}
  
  	config := NewDefaultConfig()
  	config.Username = values["ZONEEE_API_USER"]
  	config.APIKey = values["ZONEEE_API_KEY"]
  	config.Endpoint = endpoint
  
  	return NewDNSProviderConfig(config)
  }
docs: // NewDNSProvider returns a DNSProvider instance.