//
// This method is deprecated - clients and servers should negotiate a serializer by mime-type and
// invoke CodecForVersions. Callers that need only to read data should use UniversalDecoder().
//
// TODO: make this call exist only in pkg/api, and initialize it with the set of default versions.
// All other callers will be forced to request a Codec directly.

	var kubeconfigFile string
	if configFile != nil {
		// we have a config so parse it.
		data, err := io.ReadAll(configFile)
		if err != nil {
			return "", err
		}
		decoder := codecs.UniversalDecoder()
		decodedObj, err := runtime.Decode(decoder, data)
		if err != nil {
			return "", err
		}
		config, ok := decodedObj.(*webhookadmission.WebhookAdmission)
		if !ok {

				if configData == "" {
					t2.Fatal("Fail to find ClusterConfigurationConfigMapKey key")
				}

				decodedCfg := &kubeadmapi.ClusterConfiguration{}
				if err := runtime.DecodeInto(kubeadmscheme.Codecs.UniversalDecoder(), []byte(configData), decodedCfg); err != nil {
					t2.Fatalf("unable to decode config from bytes: %v", err)
				}

				if len(decodedCfg.ComponentConfigs) != 0 {

	data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
	if err != nil {
		t.Errorf("%v\n %#v", err, obj)
		return nil
	}
	obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
	if err != nil {
		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
		return nil
	}
	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)

// for a real clientset and is mostly useful in simple unit tests.
func NewSimpleClientset(objects ...runtime.Object) *Clientset {
	o := testing.NewObjectTracker(scheme, codecs.UniversalDecoder())
	for _, obj := range objects {
		if err := o.Add(obj); err != nil {
			panic(err)
		}
	}

	cs := &Clientset{tracker: o}
	cs.discovery = &fakediscovery.FakeDiscovery{Fake: &cs.Fake}

	data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
	if err != nil {
		t.Errorf("%v\n %#v", err, obj)
		return nil
	}
	obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
	if err != nil {
		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
		return nil
	}
	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)

	data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
	if err != nil {
		t.Errorf("%v\n %#v", err, obj)
		return nil
	}
	obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
	if err != nil {
		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
		return nil
	}
	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)

			backend := NewBackend(&buf, FormatJson, version)
			backend.ProcessEvents(event)
			// decode events back and compare with the original one.
			result := &auditinternal.Event{}
			decoder := audit.Codecs.UniversalDecoder(version)
			if err := runtime.DecodeInto(decoder, buf.Bytes(), result); err != nil {
				t.Errorf("failed decoding buf: %s, apiVersion: %s", buf.String(), version)
				continue
			}

	err = unmarshalFunc(buf.Bytes(), &poutput)
	if err != nil {
		t.Fatal(err)
	}
	// Use real decode function to undo the versioning process.
	poutput = TestStruct{}
	s := scheme.Codecs.UniversalDecoder(scheme.Scheme.PrioritizedVersionsAllGroups()...)
	if err := runtime.DecodeInto(s, buf.Bytes(), &poutput); err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(testData, poutput) {

	}

	return config, nil
}

// decode decodes data into the internal CredentialProviderConfig type.
func decode(data []byte) (*kubeletconfig.CredentialProviderConfig, error) {
	obj, gvk, err := codecs.UniversalDecoder().Decode(data, nil, nil)
	if err != nil {
		return nil, err
	}

	if gvk.Kind != "CredentialProviderConfig" {
		return nil, fmt.Errorf("failed to decode %q (wrong Kind)", gvk.Kind)
	}