code: func NewDynamicBackend(rc *rest.RESTClient, initialBackoff time.Duration) audit.Backend {
  	return &backend{
  		w: &webhook.GenericWebhook{
  			RestClient:     rc,
  			InitialBackoff: initialBackoff,
  		},
  		name: fmt.Sprintf("dynamic_%s", PluginName),
  	}
  }
docs: // NewDynamicBackend returns an audit backend configured from a REST client that
  // sends events over HTTP to an external service.