handlers            map[string]cache.PluginHandler
	sync.RWMutex
}

var _ Reconciler = &reconciler{}

func (rc *reconciler) Run(stopCh <-chan struct{}) {
	wait.Until(func() {
		rc.reconcile()
	},
		rc.loopSleepDuration,
		stopCh)
}

func (rc *reconciler) AddHandler(pluginType string, pluginHandler cache.PluginHandler) {
	rc.Lock()
	defer rc.Unlock()

// limitations under the License.

package concurrent

import (
	"time"

	"istio.io/istio/pkg/util/sets"
)

type Debouncer[T comparable] struct{}

func (d *Debouncer[T]) Run(ch chan T, stopCh <-chan struct{}, debounceMinInterval, debounceMaxInterval time.Duration, pushFn func(sets.Set[T])) {
	var timeChan <-chan time.Time
	var startDebounce time.Time
	var lastConfigUpdateTime time.Time

	pushCounter := 0

	})
}

func (c *DiscoveryController) Run(stopCh <-chan struct{}, synchedCh chan<- struct{}) {
	defer utilruntime.HandleCrash()
	defer c.queue.ShutDown()
	defer klog.Info("Shutting down DiscoveryController")

	klog.Info("Starting DiscoveryController")

	if !cache.WaitForCacheSync(stopCh, c.crdsSynced) {
		utilruntime.HandleError(fmt.Errorf("timed out waiting for caches to sync"))

// defined by the context package. Will be removed in a future release.
func PollUntil(interval time.Duration, condition ConditionFunc, stopCh <-chan struct{}) error {
	return PollUntilWithContext(ContextForChannel(stopCh), interval, condition.WithContext())
}

// PollUntilWithContext tries a condition func until it returns true,
// an error or the specified context is cancelled or expired.
//

func (c *KubernetesAPIApprovalPolicyConformantConditionController) Run(workers int, stopCh <-chan struct{}) {
	defer utilruntime.HandleCrash()
	defer c.queue.ShutDown()

	klog.Infof("Starting KubernetesAPIApprovalPolicyConformantConditionController")
	defer klog.Infof("Shutting down KubernetesAPIApprovalPolicyConformantConditionController")

	if !cache.WaitForCacheSync(stopCh, c.crdSynced) {
		return
	}

	for i := 0; i < workers; i++ {

	events []*auditinternal.Event
}

func (f *fakeBackend) ProcessEvents(events ...*auditinternal.Event) bool {
	f.events = append(f.events, events...)
	return true
}

func (f *fakeBackend) Run(stopCh <-chan struct{}) error {
	return nil
}

func (f *fakeBackend) Shutdown() {
	// Nothing to do here.
}

func (f *fakeBackend) String() string {
	return ""
}

func TestUnion(t *testing.T) {

	// into channels.
	go func(stopCh <-chan struct{}) {
		for {
			nodeUpdate, shutdown := tc.nodeUpdateQueue.Get()
			if shutdown {
				break
			}
			hash := hash(nodeUpdate.nodeName, UpdateWorkerSize)
			select {
			case <-stopCh:
				tc.nodeUpdateQueue.Done(nodeUpdate)
				return
			case tc.nodeUpdateChannels[hash] <- nodeUpdate:

					time.Sleep(25 * time.Millisecond)
				}
			}()
		}
	}
	// Time-advancing goroutine.
	stopCh := make(chan struct{})
	timeWg := sync.WaitGroup{}
	timeWg.Add(1)
	go func() {
		defer timeWg.Done()
		for {
			select {
			case <-stopCh:
				return
			case <-time.After(25 * time.Millisecond):
				fakeClock.Step(time.Second)
			}
		}
	}()

	b.StartTimer()

		if features.LocalClusterSecretWatcher && features.ExternalIstiod {
			c.secrets.Start(stopCh)
		}
		if !kube.WaitForCacheSync("multicluster remote secrets", stopCh, c.secrets.HasSynced) {
			return
		}
		log.Infof("multicluster remote secrets controller cache synced in %v", time.Since(t0))
		c.queue.Run(stopCh)
		c.handleDelete(c.configClusterID)
	}()
	return nil
}

	c, informers, err := f.newController(ctx)
	if err != nil {
		f.t.Fatalf("error creating Deployment controller: %v", err)
	}
	if startInformers {
		stopCh := make(chan struct{})
		defer close(stopCh)
		informers.Start(stopCh)
	}

	err = c.syncDeployment(ctx, deploymentName)
	if !expectError && err != nil {
		f.t.Errorf("error syncing deployment: %v", err)
	} else if expectError && err == nil {