code: func NewWebhookWithCert(link string, file interface{}) WebhookConfig {
  	u, _ := url.Parse(link)
  
  	return WebhookConfig{
  		URL:         u,
  		Certificate: file,
  	}
  }
docs: // NewWebhookWithCert creates a new webhook with a certificate.
  //
  // link is the url you wish to get webhooks,
  // file contains a string to a file, FileReader, or FileBytes.