func (s *Scheme) SetVersionPriority(versions ...schema.GroupVersion) error {
	groups := sets.String{}
	order := []string{}
	for _, version := range versions {
		if len(version.Version) == 0 || version.Version == APIVersionInternal {
			return fmt.Errorf("internal versions cannot be prioritized: %v", version)
		}
		groups.Insert(version.Group)
		order = append(order, version.Version)
	}
	if len(groups) != 1 {
		return fmt.Errorf("must register versions for exactly one group: %v", strings.Join(groups.List(), ", "))
	}
	s.versionPriority[groups.List()[0]] = order
	return nil
}
SetVersionPriority allows specifying a precise order of priority. All specified versions must be in the same group,
and the specified order overwrites any previously specified order for this group
package runtime
import (
	"fmt"
	"net/url"
	"reflect"
	"strings"
	"k8s.io/apimachinery/pkg/conversion"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apimachinery/pkg/util/naming"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	"k8s.io/apimachinery/pkg/util/sets"
)
type Scheme struct {
	gvkToType map[schema.GroupVersionKind]reflect.Type
	typeToGVK map[reflect.Type][]schema.GroupVersionKind
	unversionedTypes map[reflect.Type]schema.GroupVersionKind
	unversionedKinds map[string]reflect.Type
	fieldLabelConversionFuncs map[schema.GroupVersionKind]FieldLabelConversionFunc
	defaulterFuncs map[reflect.Type]func(interface{})
	converter *conversion.Converter
	versionPriority map[string][]string
	observedVersions []schema.GroupVersion
	schemeName string
}
type FieldLabelConversionFunc func(label, value string) (internalLabel, internalValue string, err error)
func NewScheme() *Scheme {
	s := &Scheme{
		gvkToType:                 map[schema.GroupVersionKind]reflect.Type{},
		typeToGVK:                 map[reflect.Type][]schema.GroupVersionKind{},
		unversionedTypes:          map[reflect.Type]schema.GroupVersionKind{},
		unversionedKinds:          map[string]reflect.Type{},
		fieldLabelConversionFuncs: map[schema.GroupVersionKind]FieldLabelConversionFunc{},
		defaulterFuncs:            map[reflect.Type]func(interface{}){},
		versionPriority:           map[string][]string{},
		schemeName:                naming.GetNameFromCallsite(internalPackages...),
	}
	s.converter = conversion.NewConverter(s.nameFunc)
	utilruntime.Must(s.AddConversionFuncs(DefaultEmbeddedConversions()...))
	utilruntime.Must(s.AddConversionFuncs(DefaultStringConversions...))
	utilruntime.Must(s.RegisterInputDefaults(&map[string][]string{}, JSONKeyMapper, conversion.AllowDifferentFieldTypeNames|conversion.IgnoreMissingFields))
	utilruntime.Must(s.RegisterInputDefaults(&url.Values{}, JSONKeyMapper, conversion.AllowDifferentFieldTypeNames|conversion.IgnoreMissingFields))
	return s
}
func (s *Scheme) nameFunc(t reflect.Type) string {
	gvks, ok := s.typeToGVK[t]
	if !ok {
		return t.Name()
	}
	for _, gvk := range gvks {
		internalGV := gvk.GroupVersion()
		internalGV.Version = APIVersionInternal  
		internalGVK := internalGV.WithKind(gvk.Kind)
		if internalType, exists := s.gvkToType[internalGVK]; exists {
			return s.typeToGVK[internalType][0].Kind
		}
	}
	return gvks[0].Kind
}
func (s *Scheme) fromScope(scope conversion.Scope) *Scheme {
	return s
}
func (s *Scheme) Converter() *conversion.Converter {
	return s.converter
}
func (s *Scheme) AddUnversionedTypes(version schema.GroupVersion, types ...Object) {
	s.addObservedVersion(version)
	s.AddKnownTypes(version, types...)
	for _, obj := range types {
		t := reflect.TypeOf(obj).Elem()
		gvk := version.WithKind(t.Name())
		s.unversionedTypes[t] = gvk
		if old, ok := s.unversionedKinds[gvk.Kind]; ok && t != old {
			panic(fmt.Sprintf("%v.%v has already been registered as unversioned kind %q - kind name must be unique in scheme %q", old.PkgPath(), old.Name(), gvk, s.schemeName))
		}
		s.unversionedKinds[gvk.Kind] = t
	}
}
func (s *Scheme) AddKnownTypes(gv schema.GroupVersion, types ...Object) {
	s.addObservedVersion(gv)
	for _, obj := range types {
		t := reflect.TypeOf(obj)
		if t.Kind() != reflect.Ptr {
			panic("All types must be pointers to structs.")
		}
		t = t.Elem()
		s.AddKnownTypeWithName(gv.WithKind(t.Name()), obj)
	}
}
func (s *Scheme) AddKnownTypeWithName(gvk schema.GroupVersionKind, obj Object) {
	s.addObservedVersion(gvk.GroupVersion())
	t := reflect.TypeOf(obj)
	if len(gvk.Version) == 0 {
		panic(fmt.Sprintf("version is required on all types: %s %v", gvk, t))
	}
	if t.Kind() != reflect.Ptr {
		panic("All types must be pointers to structs.")
	}
	t = t.Elem()
	if t.Kind() != reflect.Struct {
		panic("All types must be pointers to structs.")
	}
	if oldT, found := s.gvkToType[gvk]; found && oldT != t {
		panic(fmt.Sprintf("Double registration of different types for %v: old=%v.%v, new=%v.%v in scheme %q", gvk, oldT.PkgPath(), oldT.Name(), t.PkgPath(), t.Name(), s.schemeName))
	}
	s.gvkToType[gvk] = t
	for _, existingGvk := range s.typeToGVK[t] {
		if existingGvk == gvk {
			return
		}
	}
	s.typeToGVK[t] = append(s.typeToGVK[t], gvk)
}
func (s *Scheme) KnownTypes(gv schema.GroupVersion) map[string]reflect.Type {
	types := make(map[string]reflect.Type)
	for gvk, t := range s.gvkToType {
		if gv != gvk.GroupVersion() {
			continue
		}
		types[gvk.Kind] = t
	}
	return types
}
func (s *Scheme) AllKnownTypes() map[schema.GroupVersionKind]reflect.Type {
	return s.gvkToType
}
func (s *Scheme) ObjectKinds(obj Object) ([]schema.GroupVersionKind, bool, error) {
	if _, ok := obj.(Unstructured); ok {
		gvk := obj.GetObjectKind().GroupVersionKind()
		if len(gvk.Kind) == 0 {
			return nil, false, NewMissingKindErr("unstructured object has no kind")
		}
		if len(gvk.Version) == 0 {
			return nil, false, NewMissingVersionErr("unstructured object has no version")
		}
		return []schema.GroupVersionKind{gvk}, false, nil
	}
	v, err := conversion.EnforcePtr(obj)
	if err != nil {
		return nil, false, err
	}
	t := v.Type()
	gvks, ok := s.typeToGVK[t]
	if !ok {
		return nil, false, NewNotRegisteredErrForType(s.schemeName, t)
	}
	_, unversionedType := s.unversionedTypes[t]
	return gvks, unversionedType, nil
}
func (s *Scheme) Recognizes(gvk schema.GroupVersionKind) bool {
	_, exists := s.gvkToType[gvk]
	return exists
}
func (s *Scheme) IsUnversioned(obj Object) (bool, bool) {
	v, err := conversion.EnforcePtr(obj)
	if err != nil {
		return false, false
	}
	t := v.Type()
	if _, ok := s.typeToGVK[t]; !ok {
		return false, false
	}
	_, ok := s.unversionedTypes[t]
	return ok, true
}
func (s *Scheme) New(kind schema.GroupVersionKind) (Object, error) {
	if t, exists := s.gvkToType[kind]; exists {
		return reflect.New(t).Interface().(Object), nil
	}
	if t, exists := s.unversionedKinds[kind.Kind]; exists {
		return reflect.New(t).Interface().(Object), nil
	}
	return nil, NewNotRegisteredErrForKind(s.schemeName, kind)
}
func (s *Scheme) Log(l conversion.DebugLogger) {
	s.converter.Debug = l
}
func (s *Scheme) AddIgnoredConversionType(from, to interface{}) error {
	return s.converter.RegisterIgnoredConversion(from, to)
}
func (s *Scheme) AddConversionFuncs(conversionFuncs ...interface{}) error {
	for _, f := range conversionFuncs {
		if err := s.converter.RegisterConversionFunc(f); err != nil {
			return err
		}
	}
	return nil
}
func (s *Scheme) AddConversionFunc(a, b interface{}, fn conversion.ConversionFunc) error {
	return s.converter.RegisterUntypedConversionFunc(a, b, fn)
}
func (s *Scheme) AddGeneratedConversionFunc(a, b interface{}, fn conversion.ConversionFunc) error {
	return s.converter.RegisterGeneratedUntypedConversionFunc(a, b, fn)
}
func (s *Scheme) AddFieldLabelConversionFunc(gvk schema.GroupVersionKind, conversionFunc FieldLabelConversionFunc) error {
	s.fieldLabelConversionFuncs[gvk] = conversionFunc
	return nil
}
func (s *Scheme) RegisterInputDefaults(in interface{}, fn conversion.FieldMappingFunc, defaultFlags conversion.FieldMatchingFlags) error {
	return s.converter.RegisterInputDefaults(in, fn, defaultFlags)
}
func (s *Scheme) AddTypeDefaultingFunc(srcType Object, fn func(interface{})) {
	s.defaulterFuncs[reflect.TypeOf(srcType)] = fn
}
func (s *Scheme) Default(src Object) {
	if fn, ok := s.defaulterFuncs[reflect.TypeOf(src)]; ok {
		fn(src)
	}
}
func (s *Scheme) Convert(in, out interface{}, context interface{}) error {
	unstructuredIn, okIn := in.(Unstructured)
	unstructuredOut, okOut := out.(Unstructured)
	switch {
	case okIn && okOut:
		unstructuredOut.SetUnstructuredContent(unstructuredIn.UnstructuredContent())
		return nil
	case okOut:
		obj, ok := in.(Object)
		if !ok {
			return fmt.Errorf("unable to convert object type %T to Unstructured, must be a runtime.Object", in)
		}
		gvks, unversioned, err := s.ObjectKinds(obj)
		if err != nil {
			return err
		}
		gvk := gvks[0]
		if unversioned || gvk.Version != APIVersionInternal {
			content, err := DefaultUnstructuredConverter.ToUnstructured(in)
			if err != nil {
				return err
			}
			unstructuredOut.SetUnstructuredContent(content)
			unstructuredOut.GetObjectKind().SetGroupVersionKind(gvk)
			return nil
		}
		target, ok := context.(GroupVersioner)
		if !ok {
			return fmt.Errorf("unable to convert the internal object type %T to Unstructured without providing a preferred version to convert to", in)
		}
		versioned, err := s.UnsafeConvertToVersion(obj, target)
		if err != nil {
			return err
		}
		content, err := DefaultUnstructuredConverter.ToUnstructured(versioned)
		if err != nil {
			return err
		}
		unstructuredOut.SetUnstructuredContent(content)
		return nil
	case okIn:
		typed, err := s.unstructuredToTyped(unstructuredIn)
		if err != nil {
			return err
		}
		in = typed
	}
	flags, meta := s.generateConvertMeta(in)
	meta.Context = context
	if flags == 0 {
		flags = conversion.AllowDifferentFieldTypeNames
	}
	return s.converter.Convert(in, out, flags, meta)
}
func (s *Scheme) ConvertFieldLabel(gvk schema.GroupVersionKind, label, value string) (string, string, error) {
	conversionFunc, ok := s.fieldLabelConversionFuncs[gvk]
	if !ok {
		return DefaultMetaV1FieldSelectorConversion(label, value)
	}
	return conversionFunc(label, value)
}
func (s *Scheme) ConvertToVersion(in Object, target GroupVersioner) (Object, error) {
	return s.convertToVersion(true, in, target)
}
func (s *Scheme) UnsafeConvertToVersion(in Object, target GroupVersioner) (Object, error) {
	return s.convertToVersion(false, in, target)
}
func (s *Scheme) convertToVersion(copy bool, in Object, target GroupVersioner) (Object, error) {
	var t reflect.Type
	if u, ok := in.(Unstructured); ok {
		typed, err := s.unstructuredToTyped(u)
		if err != nil {
			return nil, err
		}
		in = typed
		t = reflect.TypeOf(in).Elem()
	} else {
		t = reflect.TypeOf(in)
		if t.Kind() != reflect.Ptr {
			return nil, fmt.Errorf("only pointer types may be converted: %v", t)
		}
		t = t.Elem()
		if t.Kind() != reflect.Struct {
			return nil, fmt.Errorf("only pointers to struct types may be converted: %v", t)
		}
	}
	kinds, ok := s.typeToGVK[t]
	if !ok || len(kinds) == 0 {
		return nil, NewNotRegisteredErrForType(s.schemeName, t)
	}
	gvk, ok := target.KindForGroupVersionKinds(kinds)
	if !ok {
		if unversionedKind, ok := s.unversionedTypes[t]; ok {
			if gvk, ok := target.KindForGroupVersionKinds([]schema.GroupVersionKind{unversionedKind}); ok {
				return copyAndSetTargetKind(copy, in, gvk)
			}
			return copyAndSetTargetKind(copy, in, unversionedKind)
		}
		return nil, NewNotRegisteredErrForTarget(s.schemeName, t, target)
	}
	for _, kind := range kinds {
		if gvk == kind {
			return copyAndSetTargetKind(copy, in, gvk)
		}
	}
	if unversionedKind, ok := s.unversionedTypes[t]; ok {
		if gvk, ok := target.KindForGroupVersionKinds([]schema.GroupVersionKind{unversionedKind}); ok {
			return copyAndSetTargetKind(copy, in, gvk)
		}
		return copyAndSetTargetKind(copy, in, unversionedKind)
	}
	out, err := s.New(gvk)
	if err != nil {
		return nil, err
	}
	if copy {
		in = in.DeepCopyObject()
	}
	flags, meta := s.generateConvertMeta(in)
	meta.Context = target
	if err := s.converter.Convert(in, out, flags, meta); err != nil {
		return nil, err
	}
	setTargetKind(out, gvk)
	return out, nil
}
func (s *Scheme) unstructuredToTyped(in Unstructured) (Object, error) {
	gvks, _, err := s.ObjectKinds(in)
	if err != nil {
		return nil, err
	}
	typed, err := s.New(gvks[0])
	if err != nil {
		return nil, err
	}
	if err := DefaultUnstructuredConverter.FromUnstructured(in.UnstructuredContent(), typed); err != nil {
		return nil, fmt.Errorf("unable to convert unstructured object to %v: %v", gvks[0], err)
	}
	return typed, nil
}
func (s *Scheme) generateConvertMeta(in interface{}) (conversion.FieldMatchingFlags, *conversion.Meta) {
	return s.converter.DefaultMeta(reflect.TypeOf(in))
}
func copyAndSetTargetKind(copy bool, obj Object, kind schema.GroupVersionKind) (Object, error) {
	if copy {
		obj = obj.DeepCopyObject()
	}
	setTargetKind(obj, kind)
	return obj, nil
}
func setTargetKind(obj Object, kind schema.GroupVersionKind) {
	if kind.Version == APIVersionInternal {
		obj.GetObjectKind().SetGroupVersionKind(schema.GroupVersionKind{})
		return
	}
	obj.GetObjectKind().SetGroupVersionKind(kind)
}