func VisitPodSecretNames(pod *api.Pod, visitor Visitor, containerType ContainerType) bool {
	visitor = skipEmptyNames(visitor)
	for _, reference := range pod.Spec.ImagePullSecrets {
		if !visitor(reference.Name) {
			return false
		}
	}
	VisitContainers(&pod.Spec, containerType, func(c *api.Container, containerType ContainerType) bool {
		return visitContainerSecretNames(c, visitor)
	})

func GetContainerSpec(pod *v1.Pod, containerName string) *v1.Container {
	var containerSpec *v1.Container
	podutil.VisitContainers(&pod.Spec, podutil.AllFeatureEnabledContainers(), func(c *v1.Container, containerType podutil.ContainerType) bool {
		if containerName == c.Name {
			containerSpec = c
			return false
		}
		return true
	})
	return containerSpec
}

	devices = sets.New[string]()
	seLinuxContainerContexts = make(map[string][]*v1.SELinuxOptions)

	podutil.VisitContainers(&pod.Spec, podutil.AllFeatureEnabledContainers(), func(container *v1.Container, containerType podutil.ContainerType) bool {
		var seLinuxOptions *v1.SELinuxOptions
		if utilfeature.DefaultFeatureGate.Enabled(features.SELinuxMountReadWriteOncePod) {

		InPlacePodVerticalScalingEnabled: utilfeature.DefaultFeatureGate.Enabled(features.InPlacePodVerticalScaling),
		ContainerFn: func(requests v1.ResourceList, containerType podutil.ContainerType) {
			non0CPUReq, non0MemReq := schedutil.GetNonzeroRequests(&requests)
			switch containerType {
			case podutil.Containers:
				non0CPU += non0CPUReq
				non0Mem += non0MemReq
			case podutil.InitContainers:

	"k8s.io/utils/pointer"
)

func TestVisitContainers(t *testing.T) {
	setAllFeatureEnabledContainersDuringTest := ContainerType(0)
	testCases := []struct {
		desc           string
		spec           *api.PodSpec
		wantContainers []string
		mask           ContainerType
	}{
		{
			desc:           "empty podspec",
			spec:           &api.PodSpec{},
			wantContainers: []string{},

		isInBackOff, msg, err := m.doBackOff(pod, spec.container, podStatus, backOff)
		if isInBackOff {
			startContainerResult.Fail(err, msg)
			klog.V(4).InfoS("Backing Off restarting container in pod", "containerType", typeName, "container", spec.container, "pod", klog.KObj(pod))
			return err
		}

		metrics.StartedContainersTotal.WithLabelValues(metricLabel).Inc()
		if sc.HasWindowsHostProcessRequest(pod, spec.container) {

			createdAt: fakeCreatedAt,
			state:     runtimeapi.ContainerState_CONTAINER_RUNNING,
		}
	}
	podutil.VisitContainers(&pod.Spec, podutil.AllFeatureEnabledContainers(), func(c *v1.Container, containerType podutil.ContainerType) bool {
		containers = append(containers, makeFakeContainer(t, m, newTemplate(c)))
		return true
	})

	fakeRuntime.SetFakeSandboxes([]*apitest.FakePodSandbox{sandbox})

			},
		},
	}

	for name, tt := range testCases {
		for _, podOS := range tt.podOSes {
			for containerType, setContainerStatuses := range containerTypes {
				t.Run(fmt.Sprintf("[podOS=%v][containerType=%s] %s", podOS, containerType, name), func(t *testing.T) {
					oldPod := &core.Pod{
						ObjectMeta: metav1.ObjectMeta{
							Name:            "foo",