// It uses reportingController when Source.Component is empty and reportingInstance when Source.Host is empty
func formatEventSource(es api.EventSource, reportingController, reportingInstance string) string {
	return formatEventSourceComponentInstance(
		firstNonEmpty(es.Component, reportingController),
		firstNonEmpty(es.Host, reportingInstance),
	)
}

            "description": "related is the optional secondary object for more complex actions. E.g. when regarding object triggers a creation or deletion of related object."
          },
          "reportingController": {
            "description": "reportingController is the name of the controller that emitted this Event, e.g. `kubernetes.io/kubelet`. This field cannot be empty for new Events.",
            "type": "string"
          },

	stopFn, err := broadcaster.StartEventWatcher(func(obj runtime.Object) {
		e, ok := obj.(*eventsv1.Event)
		if !ok || e.Reason != "Scheduled" {
			return
		}
		controllers[e.Regarding.Name] = e.ReportingController
		wg.Done()
	})
	if err != nil {
		t.Fatal(err)
	}
	defer stopFn()

	// Run scheduler.
	informerFactory.Start(ctx.Done())
	informerFactory.WaitForCacheSync(ctx.Done())

		},
		// Basic event, with empty Source; generate options=Wide
		{
			event: api.Event{
				ReportingController: "kubelet",
				ReportingInstance:   "test",
				InvolvedObject: api.ObjectReference{
					Kind:      "Deployment",
					Name:      "Deployment Name",
					FieldPath: "spec.containers{foo}",
				},