// storage and memory versions.
func NewStorageCodec(opts StorageCodecConfig) (runtime.Codec, runtime.GroupVersioner, error) {
	mediaType, _, err := mime.ParseMediaType(opts.StorageMediaType)
	if err != nil {
		return nil, nil, fmt.Errorf("%q is not a valid mime-type", opts.StorageMediaType)
	}

	supportedMediaTypes := opts.StorageSerializer.SupportedMediaTypes()
	serializer, ok := runtime.SerializerInfoForMediaType(supportedMediaTypes, mediaType)

	}{
		{
			desc: "storage options are supplied",
			env: kubeAPIServeETCDEnv{
				StorageBackend:     "StorageBackend",
				StorageMediaType:   "StorageMediaType",
				CompactionInterval: "1s",
			},
			want: []string{
				"--storage-backend=StorageBackend",
				"--storage-media-type=StorageMediaType",
				"--etcd-compaction-interval=1s",
			},
		},
		{
			desc: "storage options are not supplied",

readonly ETCD_APISERVER_CLIENT_KEY_PATH={{.APIServerKeyPath}}
readonly ETCD_SERVERS_OVERRIDES={{.ETCDServersOverride}}
readonly STORAGE_BACKEND={{.StorageBackend}}
readonly STORAGE_MEDIA_TYPE={{.StorageMediaType}}
readonly ETCD_COMPACTION_INTERVAL_SEC={{.CompactionInterval}}

		testCodecMediaType, _, err = mime.ParseMediaType(apiMediaType)
		if err != nil {
			panic(err)
		}
	}

	if storageMediaType := os.Getenv("KUBE_TEST_API_STORAGE_TYPE"); len(storageMediaType) > 0 {
		testStorageCodecMediaType, _, err = mime.ParseMediaType(storageMediaType)
		if err != nil {
			panic(err)
		}
	}
}

// InstallOrDieFunc mirrors install functions that require success

	if len(o.etcdLocation) > 0 {
		config.Transport.ServerList = o.etcdLocation
	}
	if len(o.etcdPrefix) > 0 {
		config.Prefix = o.etcdPrefix
	}

	if len(o.mediaType) > 0 {
		options.StorageMediaType = o.mediaType
	}
	if o.serializer != nil {
		options.StorageSerializer = o.serializer
	}
	if o.encoderDecoratorFn != nil {
		options.EncoderDecoratorFn = o.encoderDecoratorFn
	}