client-gen: stop embedding of GroupVersion client intfs

staging/src/k8s.io/kube-gen/cmd/client-gen/generators/generator_for_clientset.go

@@ -70,7 +70,6 @@ func (g *genClientset) GenerateType(c *generator.Context, t *types.Type, w io.Wr
 	sw := generator.NewSnippetWriter(w, c, "$", "$")
 
 	allGroups := clientgentypes.ToGroupVersionPackages(g.groups)
-
 	m := map[string]interface{}{
 		"allGroups":                            allGroups,
 		"Config":                               c.Universe.Type(types.Name{Package: "k8s.io/client-go/rest", Name: "Config"}),
@@ -116,7 +115,7 @@ var clientsetTemplate = `
 // version included in a Clientset.
 type Clientset struct {
 	*$.DiscoveryClient|raw$
-    $range .allGroups$*$.PackageName$.$.GroupVersion$Client
+    $range .allGroups$$.LowerCaseGroupVersion$ *$.PackageName$.$.GroupVersion$Client
     $end$
 }
 `
@@ -124,7 +123,7 @@ type Clientset struct {
 var clientsetInterfaceImplTemplate = `
 // $.GroupVersion$ retrieves the $.GroupVersion$Client
 func (c *Clientset) $.GroupVersion$() $.PackageName$.$.GroupVersion$Interface {
-	return c.$.GroupVersion$Client
+	return c.$.LowerCaseGroupVersion$
 }
 `
 
@@ -132,7 +131,7 @@ var clientsetInterfaceDefaultVersionImpl = `
 // Deprecated: $.Group$ retrieves the default version of $.Group$Client.
 // Please explicitly pick a version.
 func (c *Clientset) $.Group$() $.PackageName$.$.GroupVersion$Interface {
-	return c.$.GroupVersion$Client
+	return c.$.LowerCaseGroupVersion$
 }
 `
 
@@ -155,7 +154,7 @@ func NewForConfig(c *$.Config|raw$) (*Clientset, error) {
 	}
 	var cs Clientset
 	var err error
-$range .allGroups$    cs.$.GroupVersion$Client, err =$.PackageName$.NewForConfig(&configShallowCopy)
+$range .allGroups$    cs.$.LowerCaseGroupVersion$, err =$.PackageName$.NewForConfig(&configShallowCopy)
 	if err!=nil {
 		return nil, err
 	}
@@ -174,7 +173,7 @@ var newClientsetForConfigOrDieTemplate = `
 // panics if there is an error in the config.
 func NewForConfigOrDie(c *$.Config|raw$) *Clientset {
 	var cs Clientset
-$range .allGroups$    cs.$.GroupVersion$Client =$.PackageName$.NewForConfigOrDie(c)
+$range .allGroups$    cs.$.LowerCaseGroupVersion$ =$.PackageName$.NewForConfigOrDie(c)
 $end$
 	cs.DiscoveryClient = $.NewDiscoveryClientForConfigOrDie|raw$(c)
 	return &cs
@@ -185,7 +184,7 @@ var newClientsetForRESTClientTemplate = `
 // New creates a new Clientset for the given RESTClient.
 func New(c $.RESTClientInterface|raw$) *Clientset {
 	var cs Clientset
-$range .allGroups$    cs.$.GroupVersion$Client =$.PackageName$.New(c)
+$range .allGroups$    cs.$.LowerCaseGroupVersion$ =$.PackageName$.New(c)
 $end$
 	cs.DiscoveryClient = $.NewDiscoveryClient|raw$(c)
 	return &cs

staging/src/k8s.io/kube-gen/cmd/client-gen/types/helpers.go

@@ -91,11 +91,12 @@ func ToGroupVersionPackages(groups []GroupVersions) []GroupVersionPackage {
 		defaultVersion := defaultVersion(group.Versions)
 		for _, version := range group.Versions {
 			groupVersionPackages = append(groupVersionPackages, GroupVersionPackage{
-				Group:            Group(namer.IC(group.Group.NonEmpty())),
-				Version:          Version(namer.IC(version.String())),
-				GroupVersion:     namer.IC(group.Group.NonEmpty()) + namer.IC(version.String()),
-				PackageName:      strings.ToLower(group.Group.NonEmpty() + version.NonEmpty()),
-				IsDefaultVersion: version == defaultVersion && version != "",
+				Group:                 Group(namer.IC(group.Group.NonEmpty())),
+				Version:               Version(namer.IC(version.String())),
+				GroupVersion:          namer.IC(group.Group.NonEmpty()) + namer.IC(version.String()),
+				LowerCaseGroupVersion: namer.IL(group.Group.NonEmpty()) + namer.IC(version.String()),
+				PackageName:           strings.ToLower(group.Group.NonEmpty() + version.NonEmpty()),
+				IsDefaultVersion:      version == defaultVersion && version != "",
 			})
 		}
 	}

staging/src/k8s.io/kube-gen/cmd/client-gen/types/types.go

@@ -58,9 +58,10 @@ type GroupVersionPackage struct {
 	Version Version
 	// If a user calls a group client without specifying the version (e.g.,
 	// c.Core(), instead of c.CoreV1()), the default version will be returned.
-	IsDefaultVersion bool
-	GroupVersion     string
-	PackageName      string
+	IsDefaultVersion      bool
+	GroupVersion          string
+	LowerCaseGroupVersion string
+	PackageName           string
 }
 
 type GroupInstallPackage struct {