int value = 0;
  EXPECT_TRUE(cache.Lookup("a", &value));
  EXPECT_EQ(value, 1);

  // Delete the entry.
  EXPECT_TRUE(cache.Delete("a"));
  EXPECT_FALSE(cache.Lookup("a", &value));

  // Try deleting the entry again.
  EXPECT_FALSE(cache.Delete("a"));
  EXPECT_FALSE(cache.Lookup("a", &value));
}

}  // namespace

5. <<workerexecutor,`WorkerExecutor`>> - Allows a task to run work in parallel.
6. <<filesystemoperations,`FileSystemOperations`>> - Allows a task to run operations on the filesystem such as deleting files, copying files or syncing directories.
7. <<archiveoperations,`ArchiveOperations`>> - Allows a task to run operations on archive files such as ZIP or TAR files.

			t.Fatalf("Bad bundle; diff (-got +want)\n%s", diff)
		}
	})

	if err := kc.CertificatesV1alpha1().ClusterTrustBundles().Delete(ctx, ctb1.ObjectMeta.Name, metav1.DeleteOptions{}); err != nil {
		t.Fatalf("Error while deleting the old CTB: %v", err)
	}
	if _, err := kc.CertificatesV1alpha1().ClusterTrustBundles().Create(ctx, ctb2, metav1.CreateOptions{}); err != nil {
		t.Fatalf("Error while adding new CTB: %v", err)
	}

	// Note: we do not need to account for unsubscribed resources as these are handled by parent removal;
	// See https://www.envoyproxy.io/docs/envoy/latest/api-docs/xds_protocol#deleting-resources.
	// This means if there are only removals, we will not respond.
	var logFiltered string
	if !req.Delta.IsEmpty() && !con.proxy.IsProxylessGrpc() {

	// compares its generation with the current generation of the entry. It
	// deletes the entry iff the generation matches. This prevents cleanups
	// scheduled for earlier versions of an entry from deleting later versions of
	// an entry when Set() is called multiple times with the same key.
	//
	// The integer value of the generation of an entry is meaningless.
	generation uint64

	heap expiringHeap
}

		for reporter, w := range fractions {
			// check for stale data here
			if c.clock.Since(c.ObservationTime[reporter]) > c.StaleInterval {
				scope.Warnf("Status reporter %s has not been heard from since %v, deleting report.",
					reporter, c.ObservationTime[reporter])
				staleReporters = append(staleReporters, reporter)
			} else {
				distributionState.PlusEquals(w)
			}
		}

		}
		castObj, ok = tombstone.Obj.(*apiextensionsv1.CustomResourceDefinition)
		if !ok {
			klog.Errorf("Tombstone contained object that is not expected %#v", obj)
			return
		}
	}
	klog.V(4).Infof("Deleting customresourcedefinition %q", castObj.Name)
	c.enqueue(castObj)
}

func (c *Controller) enqueue(obj *apiextensionsv1.CustomResourceDefinition) {
	c.queue.Add(obj.Name)

			installWithCRFile(t, t, cs, istioCtl, "default", "v2")
			installWithCRFile(t, t, cs, istioCtl, "default", "")

			// istio control plane resources expected to be deleted after deleting CRs
			cleanupInClusterCRs(t, cs)

			// test operator remove command
			scopes.Framework.Infof("checking operator remove command for default revision")
			removeCmd := []string{
				"operator", "remove",

	return func(ctx context.Context, fireAt time.Time, args *WorkArgs) error {
		ns := args.NamespacedName.Namespace
		name := args.NamespacedName.Name
		klog.FromContext(ctx).Info("Deleting pod", "controller", controllerName, "pod", args.NamespacedName)
		if emitEventFunc != nil {
			emitEventFunc(args.NamespacedName)
		}
		var err error
		for i := 0; i < retries; i++ {

	// Request to unpublish a block volume from publishPath.
	// Expectation for driver is to remove block volume from the publishPath, by unmounting bind-mounted device file
	// or deleting device file.
	// Driver is responsible for deleting publishPath itself.
	// If driver doesn't implement NodeUnstageVolume, detaching the block volume from the node may be done, here.