Merge pull request #125162 from sttts/sttts-code-generator-core-group

code-generator/client-gen: decouple core group from package name 'api'

api/api-rules/codegen_violation_exceptions.list

@@ -7,6 +7,3 @@ API rule violation: names_match,k8s.io/apimachinery/pkg/apis/meta/v1,StatusCause
 API rule violation: names_match,k8s.io/apimachinery/pkg/apis/meta/v1,Time,Time
 API rule violation: names_match,k8s.io/apimachinery/pkg/runtime,Unknown,ContentEncoding
 API rule violation: names_match,k8s.io/apimachinery/pkg/runtime,Unknown,ContentType
-API rule violation: names_match,k8s.io/code-generator/examples/apiserver/apis/example/v1,TestTypeStatus,Blah
-API rule violation: names_match,k8s.io/code-generator/examples/apiserver/apis/example2/v1,TestTypeStatus,Blah
-API rule violation: names_match,k8s.io/code-generator/examples/apiserver/apis/example3.io/v1,TestTypeStatus,Blah

pkg/apis/core/doc.go

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package
+// +groupName=
 
 // Package core contains the latest (or "internal") version of the
 // Kubernetes API objects. This is the API objects as represented in memory.

staging/src/k8s.io/api/core/v1/doc.go

@@ -18,6 +18,7 @@ limitations under the License.
 // +k8s:deepcopy-gen=package
 // +k8s:protobuf-gen=package
 // +k8s:prerelease-lifecycle-gen=true
+// +groupName=
 
 // Package v1 is the v1 version of the core API.
 package v1 // import "k8s.io/api/core/v1"

staging/src/k8s.io/code-generator/cmd/client-gen/args/gvpackages_test.go

@@ -71,9 +71,9 @@ func TestGVPackageFlag(t *testing.T) {
 		{
 			args: []string{"api/v1", "api"},
 			expectedGroups: []types.GroupVersions{
-				{PackageName: "core", Group: types.Group("api"), Versions: []types.PackageVersion{
-					{Version: "v1", Package: "core/v1"},
-					{Version: "", Package: "core"},
+				{PackageName: "api", Group: types.Group("api"), Versions: []types.PackageVersion{
+					{Version: "v1", Package: "api/v1"},
+					{Version: "", Package: "api"},
 				}},
 			},
 		},

staging/src/k8s.io/code-generator/cmd/client-gen/generators/generator_for_group.go

@@ -71,31 +71,25 @@ func (g *genGroup) Imports(c *generator.Context) (imports []string) {
 func (g *genGroup) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
 	sw := generator.NewSnippetWriter(w, c, "$", "$")
 
-	apiPath := func(group string) string {
-		if group == "core" {
-			return `"/api"`
-		}
-		return `"` + g.apiPath + `"`
-	}
-
-	groupName := g.group
-	if g.group == "core" {
-		groupName = ""
-	}
 	// allow user to define a group name that's different from the one parsed from the directory.
 	p := c.Universe.Package(g.inputPackage)
+	groupName := g.group
 	if override := gengo.ExtractCommentTags("+", p.Comments)["groupName"]; override != nil {
 		groupName = override[0]
 	}
 
+	apiPath := `"` + g.apiPath + `"`
+	if groupName == "" {
+		apiPath = `"/api"`
+	}
+
 	m := map[string]interface{}{
-		"group":                            g.group,
 		"version":                          g.version,
 		"groupName":                        groupName,
 		"GroupGoName":                      g.groupGoName,
 		"Version":                          namer.IC(g.version),
 		"types":                            g.types,
-		"apiPath":                          apiPath(g.group),
+		"apiPath":                          apiPath,
 		"schemaGroupVersion":               c.Universe.Type(types.Name{Package: "k8s.io/apimachinery/pkg/runtime/schema", Name: "GroupVersion"}),
 		"runtimeAPIVersionInternal":        c.Universe.Variable(types.Name{Package: "k8s.io/apimachinery/pkg/runtime", Name: "APIVersionInternal"}),
 		"restConfig":                       c.Universe.Type(types.Name{Package: "k8s.io/client-go/rest", Name: "Config"}),

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

@@ -42,7 +42,7 @@ func (g Group) String() string {
 }
 
 func (g Group) NonEmpty() string {
-	if g == "api" {
+	if g == "" {
 		return "core"
 	}
 	return string(g)
@@ -76,7 +76,7 @@ type GroupVersionKind struct {
 }
 
 func (gv GroupVersion) ToAPIVersion() string {
-	if len(gv.Group) > 0 && gv.Group.NonEmpty() != "core" {
+	if len(gv.Group) > 0 && gv.Group != "" {
 		return gv.Group.String() + "/" + gv.Version.String()
 	} else {
 		return gv.Version.String()

staging/src/k8s.io/code-generator/examples/HyphenGroup/apis/example/v1/types.go

@@ -43,16 +43,16 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }
 
 // +genclient:nonNamespaced
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 type ClusterTestTypeList struct {
-	metav1.TypeMeta
-	metav1.ListMeta
-	Items []ClusterTestType
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []ClusterTestType `json:"items"`
 }
 
 // +genclient
@@ -70,5 +70,5 @@ type ClusterTestType struct {
 }
 
 type ClusterTestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/HyphenGroup/applyconfiguration/example/v1/clustertesttype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/HyphenGroup/apis/example/v1"
 )
 
 // ClusterTestTypeApplyConfiguration represents a declarative configuration of the ClusterTestType type for use
@@ -30,7 +29,7 @@ import (
 type ClusterTestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.ClusterTestTypeStatus `json:"status,omitempty"`
+	Status                           *ClusterTestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // ClusterTestType constructs a declarative configuration of the ClusterTestType type for use with
@@ -204,8 +203,8 @@ func (b *ClusterTestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationEx
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *ClusterTestTypeApplyConfiguration) WithStatus(value examplev1.ClusterTestTypeStatus) *ClusterTestTypeApplyConfiguration {
-	b.Status = &value
+func (b *ClusterTestTypeApplyConfiguration) WithStatus(value *ClusterTestTypeStatusApplyConfiguration) *ClusterTestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/HyphenGroup/applyconfiguration/example/v1/clustertesttypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// ClusterTestTypeStatusApplyConfiguration represents a declarative configuration of the ClusterTestTypeStatus type for use
+// with apply.
+type ClusterTestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// ClusterTestTypeStatusApplyConfiguration constructs a declarative configuration of the ClusterTestTypeStatus type for use with
+// apply.
+func ClusterTestTypeStatus() *ClusterTestTypeStatusApplyConfiguration {
+	return &ClusterTestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *ClusterTestTypeStatusApplyConfiguration) WithBlah(value string) *ClusterTestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/HyphenGroup/applyconfiguration/example/v1/testtype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/HyphenGroup/apis/example/v1"
 )
 
 // TestTypeApplyConfiguration represents a declarative configuration of the TestType type for use
@@ -30,7 +29,7 @@ import (
 type TestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.TestTypeStatus `json:"status,omitempty"`
+	Status                           *TestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // TestType constructs a declarative configuration of the TestType type for use with
@@ -205,8 +204,8 @@ func (b *TestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists()
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *TestTypeApplyConfiguration) WithStatus(value examplev1.TestTypeStatus) *TestTypeApplyConfiguration {
-	b.Status = &value
+func (b *TestTypeApplyConfiguration) WithStatus(value *TestTypeStatusApplyConfiguration) *TestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/HyphenGroup/applyconfiguration/example/v1/testtypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeStatusApplyConfiguration represents a declarative configuration of the TestTypeStatus type for use
+// with apply.
+type TestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// TestTypeStatusApplyConfiguration constructs a declarative configuration of the TestTypeStatus type for use with
+// apply.
+func TestTypeStatus() *TestTypeStatusApplyConfiguration {
+	return &TestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *TestTypeStatusApplyConfiguration) WithBlah(value string) *TestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/HyphenGroup/applyconfiguration/utils.go

@@ -34,8 +34,12 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 	// Group=example-group.hyphens.code-generator.k8s.io, Version=v1
 	case v1.SchemeGroupVersion.WithKind("ClusterTestType"):
 		return &examplev1.ClusterTestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("ClusterTestTypeStatus"):
+		return &examplev1.ClusterTestTypeStatusApplyConfiguration{}
 	case v1.SchemeGroupVersion.WithKind("TestType"):
 		return &examplev1.TestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("TestTypeStatus"):
+		return &examplev1.TestTypeStatusApplyConfiguration{}
 
 	}
 	return nil

staging/src/k8s.io/code-generator/examples/MixedCase/apis/example/v1/types.go

@@ -43,16 +43,17 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }
 
 // +genclient:nonNamespaced
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 type ClusterTestTypeList struct {
-	metav1.TypeMeta
-	metav1.ListMeta
-	Items []ClusterTestType
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []ClusterTestType `json:"items"`
 }
 
 // +genclient
@@ -71,5 +72,5 @@ type ClusterTestType struct {
 }
 
 type ClusterTestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/MixedCase/applyconfiguration/example/v1/clustertesttype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/MixedCase/apis/example/v1"
 )
 
 // ClusterTestTypeApplyConfiguration represents a declarative configuration of the ClusterTestType type for use
@@ -30,7 +29,7 @@ import (
 type ClusterTestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.ClusterTestTypeStatus `json:"status,omitempty"`
+	Status                           *ClusterTestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // ClusterTestType constructs a declarative configuration of the ClusterTestType type for use with
@@ -204,8 +203,8 @@ func (b *ClusterTestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationEx
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *ClusterTestTypeApplyConfiguration) WithStatus(value examplev1.ClusterTestTypeStatus) *ClusterTestTypeApplyConfiguration {
-	b.Status = &value
+func (b *ClusterTestTypeApplyConfiguration) WithStatus(value *ClusterTestTypeStatusApplyConfiguration) *ClusterTestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/MixedCase/applyconfiguration/example/v1/clustertesttypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// ClusterTestTypeStatusApplyConfiguration represents a declarative configuration of the ClusterTestTypeStatus type for use
+// with apply.
+type ClusterTestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// ClusterTestTypeStatusApplyConfiguration constructs a declarative configuration of the ClusterTestTypeStatus type for use with
+// apply.
+func ClusterTestTypeStatus() *ClusterTestTypeStatusApplyConfiguration {
+	return &ClusterTestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *ClusterTestTypeStatusApplyConfiguration) WithBlah(value string) *ClusterTestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/MixedCase/applyconfiguration/example/v1/testtype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/MixedCase/apis/example/v1"
 )
 
 // TestTypeApplyConfiguration represents a declarative configuration of the TestType type for use
@@ -30,7 +29,7 @@ import (
 type TestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.TestTypeStatus `json:"status,omitempty"`
+	Status                           *TestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // TestType constructs a declarative configuration of the TestType type for use with
@@ -205,8 +204,8 @@ func (b *TestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists()
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *TestTypeApplyConfiguration) WithStatus(value examplev1.TestTypeStatus) *TestTypeApplyConfiguration {
-	b.Status = &value
+func (b *TestTypeApplyConfiguration) WithStatus(value *TestTypeStatusApplyConfiguration) *TestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/MixedCase/applyconfiguration/example/v1/testtypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeStatusApplyConfiguration represents a declarative configuration of the TestTypeStatus type for use
+// with apply.
+type TestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// TestTypeStatusApplyConfiguration constructs a declarative configuration of the TestTypeStatus type for use with
+// apply.
+func TestTypeStatus() *TestTypeStatusApplyConfiguration {
+	return &TestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *TestTypeStatusApplyConfiguration) WithBlah(value string) *TestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/MixedCase/applyconfiguration/utils.go

@@ -34,8 +34,12 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 	// Group=example.crd.code-generator.k8s.io, Version=v1
 	case v1.SchemeGroupVersion.WithKind("ClusterTestType"):
 		return &examplev1.ClusterTestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("ClusterTestTypeStatus"):
+		return &examplev1.ClusterTestTypeStatusApplyConfiguration{}
 	case v1.SchemeGroupVersion.WithKind("TestType"):
 		return &examplev1.TestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("TestTypeStatus"):
+		return &examplev1.TestTypeStatusApplyConfiguration{}
 
 	}
 	return nil

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+// +groupName=
+
+package core // import "k8s.io/code-generator/examples/apiserver/apis/core"

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/install/install.go

@@ -0,0 +1,33 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package install installs the experimental API group, making it available as
+// an option to all of the API encoding/decoding machinery.
+package install
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/code-generator/examples/apiserver/apis/core"
+	"k8s.io/code-generator/examples/apiserver/apis/core/v1"
+)
+
+// Install registers the API group and adds types to a scheme
+func Install(scheme *runtime.Scheme) {
+	utilruntime.Must(core.AddToScheme(scheme))
+	utilruntime.Must(v1.AddToScheme(scheme))
+	utilruntime.Must(scheme.SetVersionPriority(v1.SchemeGroupVersion))
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/register.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package core
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var SchemeGroupVersion = schema.GroupVersion{Version: runtime.APIVersionInternal}
+
+var (
+	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
+	AddToScheme   = SchemeBuilder.AddToScheme
+)
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+// Adds the list of known types to the given scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&TestType{},
+		&TestTypeList{},
+	)
+
+	scheme.AddKnownTypes(SchemeGroupVersion)
+	return nil
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/types.go

@@ -0,0 +1,47 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package core
+
+import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestType is a top-level type. A client is created for it.
+type TestType struct {
+	metav1.TypeMeta
+	// +optional
+	metav1.ObjectMeta
+	// +optional
+	Status TestTypeStatus
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestTypeList is a top-level list type. The client methods for lists are automatically created.
+// You are not supposed to create a separated client for this one.
+type TestTypeList struct {
+	metav1.TypeMeta
+	// +optional
+	metav1.ListMeta
+
+	Items []TestType
+}
+
+type TestTypeStatus struct {
+	Blah string
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/doc.go

@@ -0,0 +1,23 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:openapi-gen=true
+// +k8s:deepcopy-gen=package
+// +k8s:defaulter-gen=TypeMeta
+// +k8s:conversion-gen=k8s.io/code-generator/examples/apiserver/apis/core
+// +groupName=
+
+package v1 // import "k8s.io/code-generator/examples/apiserver/apis/core/v1"

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/register.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var SchemeGroupVersion = schema.GroupVersion{Group: "example.apiserver.code-generator.k8s.io", Version: "v1"}
+
+var (
+	// TODO: move SchemeBuilder with zz_generated.deepcopy.go to k8s.io/api.
+	// localSchemeBuilder and AddToScheme will stay in k8s.io/kubernetes.
+	SchemeBuilder      runtime.SchemeBuilder
+	localSchemeBuilder = &SchemeBuilder
+	AddToScheme        = localSchemeBuilder.AddToScheme
+)
+
+func init() {
+	// We only register manually written functions here. The registration of the
+	// generated functions takes place in the generated files. The separation
+	// makes the code compile even when the generated files are missing.
+	localSchemeBuilder.Register(addKnownTypes)
+}
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+// Adds the list of known types to the given scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&TestType{},
+		&TestTypeList{},
+	)
+
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&metav1.Status{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/types.go

@@ -0,0 +1,47 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestType is a top-level type. A client is created for it.
+type TestType struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+	// +optional
+	Status TestTypeStatus `json:"status,omitempty"`
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestTypeList is a top-level list type. The client methods for lists are automatically created.
+// You are not supposed to create a separated client for this one.
+type TestTypeList struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+
+	Items []TestType `json:"items"`
+}
+
+type TestTypeStatus struct {
+	Blah string `json:"blah"`
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/zz_generated.conversion.go

@@ -0,0 +1,138 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by conversion-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	unsafe "unsafe"
+
+	conversion "k8s.io/apimachinery/pkg/conversion"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	core "k8s.io/code-generator/examples/apiserver/apis/core"
+)
+
+func init() {
+	localSchemeBuilder.Register(RegisterConversions)
+}
+
+// RegisterConversions adds conversion functions to the given scheme.
+// Public to allow building arbitrary schemes.
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddGeneratedConversionFunc((*TestType)(nil), (*core.TestType)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1_TestType_To_core_TestType(a.(*TestType), b.(*core.TestType), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*core.TestType)(nil), (*TestType)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_core_TestType_To_v1_TestType(a.(*core.TestType), b.(*TestType), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*TestTypeList)(nil), (*core.TestTypeList)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1_TestTypeList_To_core_TestTypeList(a.(*TestTypeList), b.(*core.TestTypeList), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*core.TestTypeList)(nil), (*TestTypeList)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_core_TestTypeList_To_v1_TestTypeList(a.(*core.TestTypeList), b.(*TestTypeList), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*TestTypeStatus)(nil), (*core.TestTypeStatus)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1_TestTypeStatus_To_core_TestTypeStatus(a.(*TestTypeStatus), b.(*core.TestTypeStatus), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*core.TestTypeStatus)(nil), (*TestTypeStatus)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_core_TestTypeStatus_To_v1_TestTypeStatus(a.(*core.TestTypeStatus), b.(*TestTypeStatus), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func autoConvert_v1_TestType_To_core_TestType(in *TestType, out *core.TestType, s conversion.Scope) error {
+	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_v1_TestTypeStatus_To_core_TestTypeStatus(&in.Status, &out.Status, s); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Convert_v1_TestType_To_core_TestType is an autogenerated conversion function.
+func Convert_v1_TestType_To_core_TestType(in *TestType, out *core.TestType, s conversion.Scope) error {
+	return autoConvert_v1_TestType_To_core_TestType(in, out, s)
+}
+
+func autoConvert_core_TestType_To_v1_TestType(in *core.TestType, out *TestType, s conversion.Scope) error {
+	out.ObjectMeta = in.ObjectMeta
+	if err := Convert_core_TestTypeStatus_To_v1_TestTypeStatus(&in.Status, &out.Status, s); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Convert_core_TestType_To_v1_TestType is an autogenerated conversion function.
+func Convert_core_TestType_To_v1_TestType(in *core.TestType, out *TestType, s conversion.Scope) error {
+	return autoConvert_core_TestType_To_v1_TestType(in, out, s)
+}
+
+func autoConvert_v1_TestTypeList_To_core_TestTypeList(in *TestTypeList, out *core.TestTypeList, s conversion.Scope) error {
+	out.ListMeta = in.ListMeta
+	out.Items = *(*[]core.TestType)(unsafe.Pointer(&in.Items))
+	return nil
+}
+
+// Convert_v1_TestTypeList_To_core_TestTypeList is an autogenerated conversion function.
+func Convert_v1_TestTypeList_To_core_TestTypeList(in *TestTypeList, out *core.TestTypeList, s conversion.Scope) error {
+	return autoConvert_v1_TestTypeList_To_core_TestTypeList(in, out, s)
+}
+
+func autoConvert_core_TestTypeList_To_v1_TestTypeList(in *core.TestTypeList, out *TestTypeList, s conversion.Scope) error {
+	out.ListMeta = in.ListMeta
+	out.Items = *(*[]TestType)(unsafe.Pointer(&in.Items))
+	return nil
+}
+
+// Convert_core_TestTypeList_To_v1_TestTypeList is an autogenerated conversion function.
+func Convert_core_TestTypeList_To_v1_TestTypeList(in *core.TestTypeList, out *TestTypeList, s conversion.Scope) error {
+	return autoConvert_core_TestTypeList_To_v1_TestTypeList(in, out, s)
+}
+
+func autoConvert_v1_TestTypeStatus_To_core_TestTypeStatus(in *TestTypeStatus, out *core.TestTypeStatus, s conversion.Scope) error {
+	out.Blah = in.Blah
+	return nil
+}
+
+// Convert_v1_TestTypeStatus_To_core_TestTypeStatus is an autogenerated conversion function.
+func Convert_v1_TestTypeStatus_To_core_TestTypeStatus(in *TestTypeStatus, out *core.TestTypeStatus, s conversion.Scope) error {
+	return autoConvert_v1_TestTypeStatus_To_core_TestTypeStatus(in, out, s)
+}
+
+func autoConvert_core_TestTypeStatus_To_v1_TestTypeStatus(in *core.TestTypeStatus, out *TestTypeStatus, s conversion.Scope) error {
+	out.Blah = in.Blah
+	return nil
+}
+
+// Convert_core_TestTypeStatus_To_v1_TestTypeStatus is an autogenerated conversion function.
+func Convert_core_TestTypeStatus_To_v1_TestTypeStatus(in *core.TestTypeStatus, out *TestTypeStatus, s conversion.Scope) error {
+	return autoConvert_core_TestTypeStatus_To_v1_TestTypeStatus(in, out, s)
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/zz_generated.deepcopy.go

@@ -0,0 +1,102 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestType) DeepCopyInto(out *TestType) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	out.Status = in.Status
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestType.
+func (in *TestType) DeepCopy() *TestType {
+	if in == nil {
+		return nil
+	}
+	out := new(TestType)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestType) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeList) DeepCopyInto(out *TestTypeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]TestType, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeList.
+func (in *TestTypeList) DeepCopy() *TestTypeList {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestTypeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeStatus) DeepCopyInto(out *TestTypeStatus) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeStatus.
+func (in *TestTypeStatus) DeepCopy() *TestTypeStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeStatus)
+	in.DeepCopyInto(out)
+	return out
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/v1/zz_generated.defaults.go

@@ -0,0 +1,33 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by defaulter-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// RegisterDefaults adds defaulters functions to the given scheme.
+// Public to allow building arbitrary schemes.
+// All generated defaulters are covering - they call all nested defaulters.
+func RegisterDefaults(scheme *runtime.Scheme) error {
+	return nil
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/core/zz_generated.deepcopy.go

@@ -0,0 +1,102 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package core
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestType) DeepCopyInto(out *TestType) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	out.Status = in.Status
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestType.
+func (in *TestType) DeepCopy() *TestType {
+	if in == nil {
+		return nil
+	}
+	out := new(TestType)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestType) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeList) DeepCopyInto(out *TestTypeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]TestType, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeList.
+func (in *TestTypeList) DeepCopy() *TestTypeList {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestTypeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeStatus) DeepCopyInto(out *TestTypeStatus) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeStatus.
+func (in *TestTypeStatus) DeepCopy() *TestTypeStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeStatus)
+	in.DeepCopyInto(out)
+	return out
+}

staging/src/k8s.io/code-generator/examples/apiserver/apis/example/types.go

@@ -24,7 +24,9 @@ import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 // TestType is a top-level type. A client is created for it.
 type TestType struct {
 	metav1.TypeMeta
+	// +optional
 	metav1.ObjectMeta
+	// +optional
 	Status TestTypeStatus
 }
 
@@ -34,6 +36,7 @@ type TestType struct {
 // You are not supposed to create a separated client for this one.
 type TestTypeList struct {
 	metav1.TypeMeta
+	// +optional
 	metav1.ListMeta
 
 	Items []TestType

staging/src/k8s.io/code-generator/examples/apiserver/apis/example/v1/types.go

@@ -43,5 +43,5 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/apiserver/apis/example2/types.go

@@ -21,6 +21,7 @@ import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 // +genclient
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 // +genclient:nonNamespaced
+//
 // TestType is a top-level type. A client is created for it.
 type TestType struct {
 	metav1.TypeMeta

staging/src/k8s.io/code-generator/examples/apiserver/apis/example2/v1/types.go

@@ -43,5 +43,5 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/apiserver/apis/example3.io/types.go

@@ -24,7 +24,9 @@ import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 // TestType is a top-level type. A client is created for it.
 type TestType struct {
 	metav1.TypeMeta
+	// +optional
 	metav1.ObjectMeta
+	// +optional
 	Status TestTypeStatus
 }
 
@@ -34,6 +36,7 @@ type TestType struct {
 // You are not supposed to create a separated client for this one.
 type TestTypeList struct {
 	metav1.TypeMeta
+	// +optional
 	metav1.ListMeta
 
 	Items []TestType

staging/src/k8s.io/code-generator/examples/apiserver/apis/example3.io/v1/types.go

@@ -43,5 +43,5 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/clientset.go

@@ -25,6 +25,7 @@ import (
 	discovery "k8s.io/client-go/discovery"
 	rest "k8s.io/client-go/rest"
 	flowcontrol "k8s.io/client-go/util/flowcontrol"
+	corev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1"
 	examplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example/v1"
 	secondexamplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example2/v1"
 	thirdexamplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example3.io/v1"
@@ -32,6 +33,7 @@ import (
 
 type Interface interface {
 	Discovery() discovery.DiscoveryInterface
+	CoreV1() corev1.CoreV1Interface
 	ExampleV1() examplev1.ExampleV1Interface
 	SecondExampleV1() secondexamplev1.SecondExampleV1Interface
 	ThirdExampleV1() thirdexamplev1.ThirdExampleV1Interface
@@ -40,11 +42,17 @@ type Interface interface {
 // Clientset contains the clients for groups.
 type Clientset struct {
 	*discovery.DiscoveryClient
+	coreV1          *corev1.CoreV1Client
 	exampleV1       *examplev1.ExampleV1Client
 	secondExampleV1 *secondexamplev1.SecondExampleV1Client
 	thirdExampleV1  *thirdexamplev1.ThirdExampleV1Client
 }
 
+// CoreV1 retrieves the CoreV1Client
+func (c *Clientset) CoreV1() corev1.CoreV1Interface {
+	return c.coreV1
+}
+
 // ExampleV1 retrieves the ExampleV1Client
 func (c *Clientset) ExampleV1() examplev1.ExampleV1Interface {
 	return c.exampleV1
@@ -104,6 +112,10 @@ func NewForConfigAndClient(c *rest.Config, httpClient *http.Client) (*Clientset,
 
 	var cs Clientset
 	var err error
+	cs.coreV1, err = corev1.NewForConfigAndClient(&configShallowCopy, httpClient)
+	if err != nil {
+		return nil, err
+	}
 	cs.exampleV1, err = examplev1.NewForConfigAndClient(&configShallowCopy, httpClient)
 	if err != nil {
 		return nil, err
@@ -137,6 +149,7 @@ func NewForConfigOrDie(c *rest.Config) *Clientset {
 // New creates a new Clientset for the given RESTClient.
 func New(c rest.Interface) *Clientset {
 	var cs Clientset
+	cs.coreV1 = corev1.New(c)
 	cs.exampleV1 = examplev1.New(c)
 	cs.secondExampleV1 = secondexamplev1.New(c)
 	cs.thirdExampleV1 = thirdexamplev1.New(c)

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/clientset_generated.go

@@ -25,6 +25,8 @@ import (
 	fakediscovery "k8s.io/client-go/discovery/fake"
 	"k8s.io/client-go/testing"
 	clientset "k8s.io/code-generator/examples/apiserver/clientset/versioned"
+	corev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1"
+	fakecorev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/fake"
 	examplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example/v1"
 	fakeexamplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example/v1/fake"
 	secondexamplev1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/example2/v1"
@@ -87,6 +89,11 @@ var (
 	_ testing.FakeClient  = &Clientset{}
 )
 
+// CoreV1 retrieves the CoreV1Client
+func (c *Clientset) CoreV1() corev1.CoreV1Interface {
+	return &fakecorev1.FakeCoreV1{Fake: &c.Fake}
+}
+
 // ExampleV1 retrieves the ExampleV1Client
 func (c *Clientset) ExampleV1() examplev1.ExampleV1Interface {
 	return &fakeexamplev1.FakeExampleV1{Fake: &c.Fake}

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/register.go

@@ -24,6 +24,7 @@ import (
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
 	serializer "k8s.io/apimachinery/pkg/runtime/serializer"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	corev1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
 	examplev1 "k8s.io/code-generator/examples/apiserver/apis/example/v1"
 	secondexamplev1 "k8s.io/code-generator/examples/apiserver/apis/example2/v1"
 	thirdexamplev1 "k8s.io/code-generator/examples/apiserver/apis/example3.io/v1"
@@ -33,6 +34,7 @@ var scheme = runtime.NewScheme()
 var codecs = serializer.NewCodecFactory(scheme)
 
 var localSchemeBuilder = runtime.SchemeBuilder{
+	corev1.AddToScheme,
 	examplev1.AddToScheme,
 	secondexamplev1.AddToScheme,
 	thirdexamplev1.AddToScheme,

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/scheme/register.go

@@ -24,6 +24,7 @@ import (
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
 	serializer "k8s.io/apimachinery/pkg/runtime/serializer"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	corev1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
 	examplev1 "k8s.io/code-generator/examples/apiserver/apis/example/v1"
 	secondexamplev1 "k8s.io/code-generator/examples/apiserver/apis/example2/v1"
 	thirdexamplev1 "k8s.io/code-generator/examples/apiserver/apis/example3.io/v1"
@@ -33,6 +34,7 @@ var Scheme = runtime.NewScheme()
 var Codecs = serializer.NewCodecFactory(Scheme)
 var ParameterCodec = runtime.NewParameterCodec(Scheme)
 var localSchemeBuilder = runtime.SchemeBuilder{
+	corev1.AddToScheme,
 	examplev1.AddToScheme,
 	secondexamplev1.AddToScheme,
 	thirdexamplev1.AddToScheme,

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/core_client.go

@@ -0,0 +1,107 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"net/http"
+
+	rest "k8s.io/client-go/rest"
+	v1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+	"k8s.io/code-generator/examples/apiserver/clientset/versioned/scheme"
+)
+
+type CoreV1Interface interface {
+	RESTClient() rest.Interface
+	TestTypesGetter
+}
+
+// CoreV1Client is used to interact with features provided by the  group.
+type CoreV1Client struct {
+	restClient rest.Interface
+}
+
+func (c *CoreV1Client) TestTypes(namespace string) TestTypeInterface {
+	return newTestTypes(c, namespace)
+}
+
+// NewForConfig creates a new CoreV1Client for the given config.
+// NewForConfig is equivalent to NewForConfigAndClient(c, httpClient),
+// where httpClient was generated with rest.HTTPClientFor(c).
+func NewForConfig(c *rest.Config) (*CoreV1Client, error) {
+	config := *c
+	if err := setConfigDefaults(&config); err != nil {
+		return nil, err
+	}
+	httpClient, err := rest.HTTPClientFor(&config)
+	if err != nil {
+		return nil, err
+	}
+	return NewForConfigAndClient(&config, httpClient)
+}
+
+// NewForConfigAndClient creates a new CoreV1Client for the given config and http client.
+// Note the http client provided takes precedence over the configured transport values.
+func NewForConfigAndClient(c *rest.Config, h *http.Client) (*CoreV1Client, error) {
+	config := *c
+	if err := setConfigDefaults(&config); err != nil {
+		return nil, err
+	}
+	client, err := rest.RESTClientForConfigAndClient(&config, h)
+	if err != nil {
+		return nil, err
+	}
+	return &CoreV1Client{client}, nil
+}
+
+// NewForConfigOrDie creates a new CoreV1Client for the given config and
+// panics if there is an error in the config.
+func NewForConfigOrDie(c *rest.Config) *CoreV1Client {
+	client, err := NewForConfig(c)
+	if err != nil {
+		panic(err)
+	}
+	return client
+}
+
+// New creates a new CoreV1Client for the given RESTClient.
+func New(c rest.Interface) *CoreV1Client {
+	return &CoreV1Client{c}
+}
+
+func setConfigDefaults(config *rest.Config) error {
+	gv := v1.SchemeGroupVersion
+	config.GroupVersion = &gv
+	config.APIPath = "/api"
+	config.NegotiatedSerializer = scheme.Codecs.WithoutConversion()
+
+	if config.UserAgent == "" {
+		config.UserAgent = rest.DefaultKubernetesUserAgent()
+	}
+
+	return nil
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *CoreV1Client) RESTClient() rest.Interface {
+	if c == nil {
+		return nil
+	}
+	return c.restClient
+}

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// This package has the automatically generated typed clients.
+package v1

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/fake/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// Package fake has the automatically generated clients.
+package fake

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/fake/fake_core_client.go

@@ -0,0 +1,40 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	rest "k8s.io/client-go/rest"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1"
+)
+
+type FakeCoreV1 struct {
+	*testing.Fake
+}
+
+func (c *FakeCoreV1) TestTypes(namespace string) v1.TestTypeInterface {
+	return &FakeTestTypes{c, namespace}
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *FakeCoreV1) RESTClient() rest.Interface {
+	var ret *rest.RESTClient
+	return ret
+}

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/fake/fake_testtype.go

@@ -0,0 +1,147 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	"context"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	labels "k8s.io/apimachinery/pkg/labels"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+)
+
+// FakeTestTypes implements TestTypeInterface
+type FakeTestTypes struct {
+	Fake *FakeCoreV1
+	ns   string
+}
+
+var testtypesResource = v1.SchemeGroupVersion.WithResource("testtypes")
+
+var testtypesKind = v1.SchemeGroupVersion.WithKind("TestType")
+
+// Get takes name of the testType, and returns the corresponding testType object, and an error if there is any.
+func (c *FakeTestTypes) Get(ctx context.Context, name string, options metav1.GetOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewGetActionWithOptions(testtypesResource, c.ns, name, options), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// List takes label and field selectors, and returns the list of TestTypes that match those selectors.
+func (c *FakeTestTypes) List(ctx context.Context, opts metav1.ListOptions) (result *v1.TestTypeList, err error) {
+	emptyResult := &v1.TestTypeList{}
+	obj, err := c.Fake.
+		Invokes(testing.NewListActionWithOptions(testtypesResource, testtypesKind, c.ns, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+
+	label, _, _ := testing.ExtractFromListOptions(opts)
+	if label == nil {
+		label = labels.Everything()
+	}
+	list := &v1.TestTypeList{ListMeta: obj.(*v1.TestTypeList).ListMeta}
+	for _, item := range obj.(*v1.TestTypeList).Items {
+		if label.Matches(labels.Set(item.Labels)) {
+			list.Items = append(list.Items, item)
+		}
+	}
+	return list, err
+}
+
+// Watch returns a watch.Interface that watches the requested testTypes.
+func (c *FakeTestTypes) Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error) {
+	return c.Fake.
+		InvokesWatch(testing.NewWatchActionWithOptions(testtypesResource, c.ns, opts))
+
+}
+
+// Create takes the representation of a testType and creates it.  Returns the server's representation of the testType, and an error, if there is any.
+func (c *FakeTestTypes) Create(ctx context.Context, testType *v1.TestType, opts metav1.CreateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewCreateActionWithOptions(testtypesResource, c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// Update takes the representation of a testType and updates it. Returns the server's representation of the testType, and an error, if there is any.
+func (c *FakeTestTypes) Update(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewUpdateActionWithOptions(testtypesResource, c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// UpdateStatus was generated because the type contains a Status member.
+// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+func (c *FakeTestTypes) UpdateStatus(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewUpdateSubresourceActionWithOptions(testtypesResource, "status", c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// Delete takes name of the testType and deletes it. Returns an error if one occurs.
+func (c *FakeTestTypes) Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error {
+	_, err := c.Fake.
+		Invokes(testing.NewDeleteActionWithOptions(testtypesResource, c.ns, name, opts), &v1.TestType{})
+
+	return err
+}
+
+// DeleteCollection deletes a collection of objects.
+func (c *FakeTestTypes) DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error {
+	action := testing.NewDeleteCollectionActionWithOptions(testtypesResource, c.ns, opts, listOpts)
+
+	_, err := c.Fake.Invokes(action, &v1.TestTypeList{})
+	return err
+}
+
+// Patch applies the patch and returns the patched testType.
+func (c *FakeTestTypes) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewPatchSubresourceActionWithOptions(testtypesResource, c.ns, name, pt, data, opts, subresources...), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/generated_expansion.go

@@ -0,0 +1,21 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+type TestTypeExpansion interface{}

staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/typed/core/v1/testtype.go

@@ -0,0 +1,69 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	gentype "k8s.io/client-go/gentype"
+	v1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+	scheme "k8s.io/code-generator/examples/apiserver/clientset/versioned/scheme"
+)
+
+// TestTypesGetter has a method to return a TestTypeInterface.
+// A group's client should implement this interface.
+type TestTypesGetter interface {
+	TestTypes(namespace string) TestTypeInterface
+}
+
+// TestTypeInterface has methods to work with TestType resources.
+type TestTypeInterface interface {
+	Create(ctx context.Context, testType *v1.TestType, opts metav1.CreateOptions) (*v1.TestType, error)
+	Update(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (*v1.TestType, error)
+	// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+	UpdateStatus(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (*v1.TestType, error)
+	Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error
+	DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error
+	Get(ctx context.Context, name string, opts metav1.GetOptions) (*v1.TestType, error)
+	List(ctx context.Context, opts metav1.ListOptions) (*v1.TestTypeList, error)
+	Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error)
+	Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.TestType, err error)
+	TestTypeExpansion
+}
+
+// testTypes implements TestTypeInterface
+type testTypes struct {
+	*gentype.ClientWithList[*v1.TestType, *v1.TestTypeList]
+}
+
+// newTestTypes returns a TestTypes
+func newTestTypes(c *CoreV1Client, namespace string) *testTypes {
+	return &testTypes{
+		gentype.NewClientWithList[*v1.TestType, *v1.TestTypeList](
+			"testtypes",
+			c.RESTClient(),
+			scheme.ParameterCodec,
+			namespace,
+			func() *v1.TestType { return &v1.TestType{} },
+			func() *v1.TestTypeList { return &v1.TestTypeList{} }),
+	}
+}

staging/src/k8s.io/code-generator/examples/apiserver/informers/externalversions/core/interface.go

@@ -0,0 +1,46 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package core
+
+import (
+	v1 "k8s.io/code-generator/examples/apiserver/informers/externalversions/core/v1"
+	internalinterfaces "k8s.io/code-generator/examples/apiserver/informers/externalversions/internalinterfaces"
+)
+
+// Interface provides access to each of this group's versions.
+type Interface interface {
+	// V1 provides access to shared informers for resources in V1.
+	V1() v1.Interface
+}
+
+type group struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &group{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// V1 returns a new v1.Interface.
+func (g *group) V1() v1.Interface {
+	return v1.New(g.factory, g.namespace, g.tweakListOptions)
+}

staging/src/k8s.io/code-generator/examples/apiserver/informers/externalversions/core/v1/interface.go

@@ -0,0 +1,45 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	internalinterfaces "k8s.io/code-generator/examples/apiserver/informers/externalversions/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// TestTypes returns a TestTypeInformer.
+	TestTypes() TestTypeInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// TestTypes returns a TestTypeInformer.
+func (v *version) TestTypes() TestTypeInformer {
+	return &testTypeInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

staging/src/k8s.io/code-generator/examples/apiserver/informers/externalversions/core/v1/testtype.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+	time "time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	cache "k8s.io/client-go/tools/cache"
+	corev1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+	versioned "k8s.io/code-generator/examples/apiserver/clientset/versioned"
+	internalinterfaces "k8s.io/code-generator/examples/apiserver/informers/externalversions/internalinterfaces"
+	v1 "k8s.io/code-generator/examples/apiserver/listers/core/v1"
+)
+
+// TestTypeInformer provides access to a shared informer and lister for
+// TestTypes.
+type TestTypeInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() v1.TestTypeLister
+}
+
+type testTypeInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewTestTypeInformer constructs a new informer for TestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewTestTypeInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredTestTypeInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredTestTypeInformer constructs a new informer for TestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredTestTypeInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.CoreV1().TestTypes(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.CoreV1().TestTypes(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&corev1.TestType{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *testTypeInformer) defaultInformer(client versioned.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredTestTypeInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *testTypeInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&corev1.TestType{}, f.defaultInformer)
+}
+
+func (f *testTypeInformer) Lister() v1.TestTypeLister {
+	return v1.NewTestTypeLister(f.Informer().GetIndexer())
+}

staging/src/k8s.io/code-generator/examples/apiserver/informers/externalversions/factory.go

@@ -28,6 +28,7 @@ import (
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
 	cache "k8s.io/client-go/tools/cache"
 	versioned "k8s.io/code-generator/examples/apiserver/clientset/versioned"
+	core "k8s.io/code-generator/examples/apiserver/informers/externalversions/core"
 	example "k8s.io/code-generator/examples/apiserver/informers/externalversions/example"
 	example2 "k8s.io/code-generator/examples/apiserver/informers/externalversions/example2"
 	example3io "k8s.io/code-generator/examples/apiserver/informers/externalversions/example3.io"
@@ -255,11 +256,16 @@ type SharedInformerFactory interface {
 	// client.
 	InformerFor(obj runtime.Object, newFunc internalinterfaces.NewInformerFunc) cache.SharedIndexInformer
 
+	Core() core.Interface
 	Example() example.Interface
 	SecondExample() example2.Interface
 	ThirdExample() example3io.Interface
 }
 
+func (f *sharedInformerFactory) Core() core.Interface {
+	return core.New(f, f.namespace, f.tweakListOptions)
+}
+
 func (f *sharedInformerFactory) Example() example.Interface {
 	return example.New(f, f.namespace, f.tweakListOptions)
 }

staging/src/k8s.io/code-generator/examples/apiserver/informers/externalversions/generic.go

@@ -23,7 +23,8 @@ import (
 
 	schema "k8s.io/apimachinery/pkg/runtime/schema"
 	cache "k8s.io/client-go/tools/cache"
-	v1 "k8s.io/code-generator/examples/apiserver/apis/example/v1"
+	v1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+	examplev1 "k8s.io/code-generator/examples/apiserver/apis/example/v1"
 	example2v1 "k8s.io/code-generator/examples/apiserver/apis/example2/v1"
 	example3iov1 "k8s.io/code-generator/examples/apiserver/apis/example3.io/v1"
 )
@@ -54,8 +55,12 @@ func (f *genericInformer) Lister() cache.GenericLister {
 // TODO extend this to unknown resources with a client pool
 func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
 	switch resource {
-	// Group=example.apiserver.code-generator.k8s.io, Version=v1
+	// Group=core, Version=v1
 	case v1.SchemeGroupVersion.WithResource("testtypes"):
+		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().TestTypes().Informer()}, nil
+
+		// Group=example.apiserver.code-generator.k8s.io, Version=v1
+	case examplev1.SchemeGroupVersion.WithResource("testtypes"):
 		return &genericInformer{resource: resource.GroupResource(), informer: f.Example().V1().TestTypes().Informer()}, nil
 
 		// Group=example.dots.apiserver.code-generator.k8s.io, Version=v1

staging/src/k8s.io/code-generator/examples/apiserver/listers/core/v1/expansion_generated.go

@@ -0,0 +1,27 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeListerExpansion allows custom methods to be added to
+// TestTypeLister.
+type TestTypeListerExpansion interface{}
+
+// TestTypeNamespaceListerExpansion allows custom methods to be added to
+// TestTypeNamespaceLister.
+type TestTypeNamespaceListerExpansion interface{}

staging/src/k8s.io/code-generator/examples/apiserver/listers/core/v1/testtype.go

@@ -0,0 +1,70 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/client-go/listers"
+	"k8s.io/client-go/tools/cache"
+	v1 "k8s.io/code-generator/examples/apiserver/apis/core/v1"
+)
+
+// TestTypeLister helps list TestTypes.
+// All objects returned here must be treated as read-only.
+type TestTypeLister interface {
+	// List lists all TestTypes in the indexer.
+	// Objects returned here must be treated as read-only.
+	List(selector labels.Selector) (ret []*v1.TestType, err error)
+	// TestTypes returns an object that can list and get TestTypes.
+	TestTypes(namespace string) TestTypeNamespaceLister
+	TestTypeListerExpansion
+}
+
+// testTypeLister implements the TestTypeLister interface.
+type testTypeLister struct {
+	listers.ResourceIndexer[*v1.TestType]
+}
+
+// NewTestTypeLister returns a new TestTypeLister.
+func NewTestTypeLister(indexer cache.Indexer) TestTypeLister {
+	return &testTypeLister{listers.New[*v1.TestType](indexer, v1.Resource("testtype"))}
+}
+
+// TestTypes returns an object that can list and get TestTypes.
+func (s *testTypeLister) TestTypes(namespace string) TestTypeNamespaceLister {
+	return testTypeNamespaceLister{listers.NewNamespaced[*v1.TestType](s.ResourceIndexer, namespace)}
+}
+
+// TestTypeNamespaceLister helps list and get TestTypes.
+// All objects returned here must be treated as read-only.
+type TestTypeNamespaceLister interface {
+	// List lists all TestTypes in the indexer for a given namespace.
+	// Objects returned here must be treated as read-only.
+	List(selector labels.Selector) (ret []*v1.TestType, err error)
+	// Get retrieves the TestType from the indexer for a given namespace and name.
+	// Objects returned here must be treated as read-only.
+	Get(name string) (*v1.TestType, error)
+	TestTypeNamespaceListerExpansion
+}
+
+// testTypeNamespaceLister implements the TestTypeNamespaceLister
+// interface.
+type testTypeNamespaceLister struct {
+	listers.ResourceIndexer[*v1.TestType]
+}

staging/src/k8s.io/code-generator/examples/apiserver/openapi/zz_generated.openapi.go

@@ -81,6 +81,9 @@ func GetOpenAPIDefinitions(ref common.ReferenceCallback) map[string]common.OpenA
 		"k8s.io/apimachinery/pkg/runtime.TypeMeta":                                    schema_k8sio_apimachinery_pkg_runtime_TypeMeta(ref),
 		"k8s.io/apimachinery/pkg/runtime.Unknown":                                     schema_k8sio_apimachinery_pkg_runtime_Unknown(ref),
 		"k8s.io/apimachinery/pkg/version.Info":                                        schema_k8sio_apimachinery_pkg_version_Info(ref),
+		"k8s.io/code-generator/examples/apiserver/apis/core/v1.TestType":              schema_apiserver_apis_core_v1_TestType(ref),
+		"k8s.io/code-generator/examples/apiserver/apis/core/v1.TestTypeList":          schema_apiserver_apis_core_v1_TestTypeList(ref),
+		"k8s.io/code-generator/examples/apiserver/apis/core/v1.TestTypeStatus":        schema_apiserver_apis_core_v1_TestTypeStatus(ref),
 		"k8s.io/code-generator/examples/apiserver/apis/example/v1.TestType":           schema_apiserver_apis_example_v1_TestType(ref),
 		"k8s.io/code-generator/examples/apiserver/apis/example/v1.TestTypeList":       schema_apiserver_apis_example_v1_TestTypeList(ref),
 		"k8s.io/code-generator/examples/apiserver/apis/example/v1.TestTypeStatus":     schema_apiserver_apis_example_v1_TestTypeStatus(ref),
@@ -2632,6 +2635,116 @@ func schema_k8sio_apimachinery_pkg_version_Info(ref common.ReferenceCallback) co
 	}
 }
 
+func schema_apiserver_apis_core_v1_TestType(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Description: "TestType is a top-level type. A client is created for it.",
+				Type:        []string{"object"},
+				Properties: map[string]spec.Schema{
+					"kind": {
+						SchemaProps: spec.SchemaProps{
+							Description: "Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds",
+							Type:        []string{"string"},
+							Format:      "",
+						},
+					},
+					"apiVersion": {
+						SchemaProps: spec.SchemaProps{
+							Description: "APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources",
+							Type:        []string{"string"},
+							Format:      "",
+						},
+					},
+					"metadata": {
+						SchemaProps: spec.SchemaProps{
+							Default: map[string]interface{}{},
+							Ref:     ref("k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta"),
+						},
+					},
+					"status": {
+						SchemaProps: spec.SchemaProps{
+							Default: map[string]interface{}{},
+							Ref:     ref("k8s.io/code-generator/examples/apiserver/apis/core/v1.TestTypeStatus"),
+						},
+					},
+				},
+			},
+		},
+		Dependencies: []string{
+			"k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta", "k8s.io/code-generator/examples/apiserver/apis/core/v1.TestTypeStatus"},
+	}
+}
+
+func schema_apiserver_apis_core_v1_TestTypeList(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Description: "TestTypeList is a top-level list type. The client methods for lists are automatically created. You are not supposed to create a separated client for this one.",
+				Type:        []string{"object"},
+				Properties: map[string]spec.Schema{
+					"kind": {
+						SchemaProps: spec.SchemaProps{
+							Description: "Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds",
+							Type:        []string{"string"},
+							Format:      "",
+						},
+					},
+					"apiVersion": {
+						SchemaProps: spec.SchemaProps{
+							Description: "APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources",
+							Type:        []string{"string"},
+							Format:      "",
+						},
+					},
+					"metadata": {
+						SchemaProps: spec.SchemaProps{
+							Default: map[string]interface{}{},
+							Ref:     ref("k8s.io/apimachinery/pkg/apis/meta/v1.ListMeta"),
+						},
+					},
+					"items": {
+						SchemaProps: spec.SchemaProps{
+							Type: []string{"array"},
+							Items: &spec.SchemaOrArray{
+								Schema: &spec.Schema{
+									SchemaProps: spec.SchemaProps{
+										Default: map[string]interface{}{},
+										Ref:     ref("k8s.io/code-generator/examples/apiserver/apis/core/v1.TestType"),
+									},
+								},
+							},
+						},
+					},
+				},
+				Required: []string{"items"},
+			},
+		},
+		Dependencies: []string{
+			"k8s.io/apimachinery/pkg/apis/meta/v1.ListMeta", "k8s.io/code-generator/examples/apiserver/apis/core/v1.TestType"},
+	}
+}
+
+func schema_apiserver_apis_core_v1_TestTypeStatus(ref common.ReferenceCallback) common.OpenAPIDefinition {
+	return common.OpenAPIDefinition{
+		Schema: spec.Schema{
+			SchemaProps: spec.SchemaProps{
+				Type: []string{"object"},
+				Properties: map[string]spec.Schema{
+					"blah": {
+						SchemaProps: spec.SchemaProps{
+							Default: "",
+							Type:    []string{"string"},
+							Format:  "",
+						},
+					},
+				},
+				Required: []string{"blah"},
+			},
+		},
+	}
+}
+
 func schema_apiserver_apis_example_v1_TestType(ref common.ReferenceCallback) common.OpenAPIDefinition {
 	return common.OpenAPIDefinition{
 		Schema: spec.Schema{
@@ -2728,7 +2841,7 @@ func schema_apiserver_apis_example_v1_TestTypeStatus(ref common.ReferenceCallbac
 			SchemaProps: spec.SchemaProps{
 				Type: []string{"object"},
 				Properties: map[string]spec.Schema{
-					"Blah": {
+					"blah": {
 						SchemaProps: spec.SchemaProps{
 							Default: "",
 							Type:    []string{"string"},
@@ -2736,7 +2849,7 @@ func schema_apiserver_apis_example_v1_TestTypeStatus(ref common.ReferenceCallbac
 						},
 					},
 				},
-				Required: []string{"Blah"},
+				Required: []string{"blah"},
 			},
 		},
 	}
@@ -2838,7 +2951,7 @@ func schema_apiserver_apis_example2_v1_TestTypeStatus(ref common.ReferenceCallba
 			SchemaProps: spec.SchemaProps{
 				Type: []string{"object"},
 				Properties: map[string]spec.Schema{
-					"Blah": {
+					"blah": {
 						SchemaProps: spec.SchemaProps{
 							Default: "",
 							Type:    []string{"string"},
@@ -2846,7 +2959,7 @@ func schema_apiserver_apis_example2_v1_TestTypeStatus(ref common.ReferenceCallba
 						},
 					},
 				},
-				Required: []string{"Blah"},
+				Required: []string{"blah"},
 			},
 		},
 	}
@@ -2948,7 +3061,7 @@ func schema_apiserver_apis_example3io_v1_TestTypeStatus(ref common.ReferenceCall
 			SchemaProps: spec.SchemaProps{
 				Type: []string{"object"},
 				Properties: map[string]spec.Schema{
-					"Blah": {
+					"blah": {
 						SchemaProps: spec.SchemaProps{
 							Default: "",
 							Type:    []string{"string"},
@@ -2956,7 +3069,7 @@ func schema_apiserver_apis_example3io_v1_TestTypeStatus(ref common.ReferenceCall
 						},
 					},
 				},
-				Required: []string{"Blah"},
+				Required: []string{"blah"},
 			},
 		},
 	}

staging/src/k8s.io/code-generator/examples/crd/apis/example/v1/types.go

@@ -44,16 +44,18 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }
 
 // +genclient:nonNamespaced
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 type ClusterTestTypeList struct {
-	metav1.TypeMeta
-	metav1.ListMeta
-	Items []ClusterTestType
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+
+	Items []ClusterTestType `json:"items"`
 }
 
 // +genclient
@@ -71,5 +73,5 @@ type ClusterTestType struct {
 }
 
 type ClusterTestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/crd/apis/example2/v1/types.go

@@ -43,5 +43,5 @@ type TestTypeList struct {
 }
 
 type TestTypeStatus struct {
-	Blah string
+	Blah string `json:"blah"`
 }

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example/v1/clustertesttype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/crd/apis/example/v1"
 )
 
 // ClusterTestTypeApplyConfiguration represents a declarative configuration of the ClusterTestType type for use
@@ -30,7 +29,7 @@ import (
 type ClusterTestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.ClusterTestTypeStatus `json:"status,omitempty"`
+	Status                           *ClusterTestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // ClusterTestType constructs a declarative configuration of the ClusterTestType type for use with
@@ -204,8 +203,8 @@ func (b *ClusterTestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationEx
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *ClusterTestTypeApplyConfiguration) WithStatus(value examplev1.ClusterTestTypeStatus) *ClusterTestTypeApplyConfiguration {
-	b.Status = &value
+func (b *ClusterTestTypeApplyConfiguration) WithStatus(value *ClusterTestTypeStatusApplyConfiguration) *ClusterTestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example/v1/clustertesttypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// ClusterTestTypeStatusApplyConfiguration represents a declarative configuration of the ClusterTestTypeStatus type for use
+// with apply.
+type ClusterTestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// ClusterTestTypeStatusApplyConfiguration constructs a declarative configuration of the ClusterTestTypeStatus type for use with
+// apply.
+func ClusterTestTypeStatus() *ClusterTestTypeStatusApplyConfiguration {
+	return &ClusterTestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *ClusterTestTypeStatusApplyConfiguration) WithBlah(value string) *ClusterTestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example/v1/testtype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	examplev1 "k8s.io/code-generator/examples/crd/apis/example/v1"
 )
 
 // TestTypeApplyConfiguration represents a declarative configuration of the TestType type for use
@@ -30,7 +29,7 @@ import (
 type TestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *examplev1.TestTypeStatus `json:"status,omitempty"`
+	Status                           *TestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // TestType constructs a declarative configuration of the TestType type for use with
@@ -205,8 +204,8 @@ func (b *TestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists()
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *TestTypeApplyConfiguration) WithStatus(value examplev1.TestTypeStatus) *TestTypeApplyConfiguration {
-	b.Status = &value
+func (b *TestTypeApplyConfiguration) WithStatus(value *TestTypeStatusApplyConfiguration) *TestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example/v1/testtypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeStatusApplyConfiguration represents a declarative configuration of the TestTypeStatus type for use
+// with apply.
+type TestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// TestTypeStatusApplyConfiguration constructs a declarative configuration of the TestTypeStatus type for use with
+// apply.
+func TestTypeStatus() *TestTypeStatusApplyConfiguration {
+	return &TestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *TestTypeStatusApplyConfiguration) WithBlah(value string) *TestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example2/v1/testtype.go

@@ -22,7 +22,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	types "k8s.io/apimachinery/pkg/types"
 	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
-	example2v1 "k8s.io/code-generator/examples/crd/apis/example2/v1"
 )
 
 // TestTypeApplyConfiguration represents a declarative configuration of the TestType type for use
@@ -30,7 +29,7 @@ import (
 type TestTypeApplyConfiguration struct {
 	v1.TypeMetaApplyConfiguration    `json:",inline"`
 	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
-	Status                           *example2v1.TestTypeStatus `json:"status,omitempty"`
+	Status                           *TestTypeStatusApplyConfiguration `json:"status,omitempty"`
 }
 
 // TestType constructs a declarative configuration of the TestType type for use with
@@ -205,8 +204,8 @@ func (b *TestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists()
 // WithStatus sets the Status field in the declarative configuration to the given value
 // and returns the receiver, so that objects can be built by chaining "With" function invocations.
 // If called multiple times, the Status field is set to the value of the last call.
-func (b *TestTypeApplyConfiguration) WithStatus(value example2v1.TestTypeStatus) *TestTypeApplyConfiguration {
-	b.Status = &value
+func (b *TestTypeApplyConfiguration) WithStatus(value *TestTypeStatusApplyConfiguration) *TestTypeApplyConfiguration {
+	b.Status = value
 	return b
 }
 

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/example2/v1/testtypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeStatusApplyConfiguration represents a declarative configuration of the TestTypeStatus type for use
+// with apply.
+type TestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// TestTypeStatusApplyConfiguration constructs a declarative configuration of the TestTypeStatus type for use with
+// apply.
+func TestTypeStatus() *TestTypeStatusApplyConfiguration {
+	return &TestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *TestTypeStatusApplyConfiguration) WithBlah(value string) *TestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/crd/applyconfiguration/utils.go

@@ -36,12 +36,18 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 	// Group=example.crd.code-generator.k8s.io, Version=v1
 	case v1.SchemeGroupVersion.WithKind("ClusterTestType"):
 		return &examplev1.ClusterTestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("ClusterTestTypeStatus"):
+		return &examplev1.ClusterTestTypeStatusApplyConfiguration{}
 	case v1.SchemeGroupVersion.WithKind("TestType"):
 		return &examplev1.TestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("TestTypeStatus"):
+		return &examplev1.TestTypeStatusApplyConfiguration{}
 
 		// Group=example.test.crd.code-generator.k8s.io, Version=v1
 	case example2v1.SchemeGroupVersion.WithKind("TestType"):
 		return &applyconfigurationexample2v1.TestTypeApplyConfiguration{}
+	case example2v1.SchemeGroupVersion.WithKind("TestTypeStatus"):
+		return &applyconfigurationexample2v1.TestTypeStatusApplyConfiguration{}
 
 	}
 	return nil

staging/src/k8s.io/code-generator/examples/hack/update-codegen.sh

@@ -60,6 +60,15 @@ kube::codegen::gen_client \
     --boilerplate "${SCRIPT_ROOT}/hack/boilerplate.go.txt" \
     "${SCRIPT_ROOT}/crd/apis"
 
+kube::codegen::gen_client \
+    --with-watch \
+    --with-applyconfig \
+    --output-dir "${SCRIPT_ROOT}/single" \
+    --output-pkg "${THIS_PKG}/single" \
+    --boilerplate "${SCRIPT_ROOT}/hack/boilerplate.go.txt" \
+    --one-input-api "api" \
+    "${SCRIPT_ROOT}/single"
+
 kube::codegen::gen_client \
     --with-watch \
     --with-applyconfig \

staging/src/k8s.io/code-generator/examples/hack/verify-codegen.sh

@@ -47,6 +47,7 @@ fi
 echo "Smoke testing examples by compiling..."
 pushd "${SCRIPT_ROOT}"
   go build "k8s.io/code-generator/examples/crd/..."
+  go build "k8s.io/code-generator/examples/single/..."
   go build "k8s.io/code-generator/examples/apiserver/..."
   go build "k8s.io/code-generator/examples/MixedCase/..."
   go build "k8s.io/code-generator/examples/HyphenGroup/..."

staging/src/k8s.io/code-generator/examples/single/api/v1/doc.go

@@ -0,0 +1,21 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+// +k8s:defaulter-gen=TypeMeta
+// +groupName=example.crd.code-generator.k8s.io
+
+package v1 // import "k8s.io/code-generator/examples/crd/apis/example/v1"

staging/src/k8s.io/code-generator/examples/single/api/v1/register.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var SchemeGroupVersion = schema.GroupVersion{Group: "example.crd.code-generator.k8s.io", Version: "v1"}
+
+var (
+	// TODO: move SchemeBuilder with zz_generated.deepcopy.go to k8s.io/api.
+	// localSchemeBuilder and AddToScheme will stay in k8s.io/kubernetes.
+	SchemeBuilder      runtime.SchemeBuilder
+	localSchemeBuilder = &SchemeBuilder
+	AddToScheme        = localSchemeBuilder.AddToScheme
+)
+
+func init() {
+	// We only register manually written functions here. The registration of the
+	// generated functions takes place in the generated files. The separation
+	// makes the code compile even when the generated files are missing.
+	localSchemeBuilder.Register(addKnownTypes)
+}
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+// Adds the list of known types to the given scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&TestType{},
+		&TestTypeList{},
+	)
+
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&metav1.Status{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

staging/src/k8s.io/code-generator/examples/single/api/v1/types.go

@@ -0,0 +1,75 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestType is a top-level type. A client is created for it.
+type TestType struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+	// +optional
+	Status TestTypeStatus `json:"status,omitempty"`
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// TestTypeList is a top-level list type. The client methods for lists are automatically created.
+// You are not supposed to create a separated client for this one.
+type TestTypeList struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+
+	Items []TestType `json:"items"`
+}
+
+type TestTypeStatus struct {
+	Blah string `json:"blah"`
+}
+
+// +genclient:nonNamespaced
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+type ClusterTestTypeList struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []ClusterTestType `json:"items"`
+}
+
+// +genclient
+// +genclient:nonNamespaced
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +genclient:method=GetScale,verb=get,subresource=scale,result=k8s.io/api/autoscaling/v1.Scale
+// +genclient:method=UpdateScale,verb=update,subresource=scale,input=k8s.io/api/autoscaling/v1.Scale,result=k8s.io/api/autoscaling/v1.Scale
+
+type ClusterTestType struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+	// +optional
+	Status ClusterTestTypeStatus `json:"status,omitempty"`
+}
+
+type ClusterTestTypeStatus struct {
+	Blah string `json:"blah"`
+}

staging/src/k8s.io/code-generator/examples/single/api/v1/zz_generated.deepcopy.go

@@ -0,0 +1,178 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ClusterTestType) DeepCopyInto(out *ClusterTestType) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	out.Status = in.Status
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ClusterTestType.
+func (in *ClusterTestType) DeepCopy() *ClusterTestType {
+	if in == nil {
+		return nil
+	}
+	out := new(ClusterTestType)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *ClusterTestType) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ClusterTestTypeList) DeepCopyInto(out *ClusterTestTypeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]ClusterTestType, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ClusterTestTypeList.
+func (in *ClusterTestTypeList) DeepCopy() *ClusterTestTypeList {
+	if in == nil {
+		return nil
+	}
+	out := new(ClusterTestTypeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *ClusterTestTypeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *ClusterTestTypeStatus) DeepCopyInto(out *ClusterTestTypeStatus) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ClusterTestTypeStatus.
+func (in *ClusterTestTypeStatus) DeepCopy() *ClusterTestTypeStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(ClusterTestTypeStatus)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestType) DeepCopyInto(out *TestType) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	out.Status = in.Status
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestType.
+func (in *TestType) DeepCopy() *TestType {
+	if in == nil {
+		return nil
+	}
+	out := new(TestType)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestType) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeList) DeepCopyInto(out *TestTypeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]TestType, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeList.
+func (in *TestTypeList) DeepCopy() *TestTypeList {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *TestTypeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TestTypeStatus) DeepCopyInto(out *TestTypeStatus) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TestTypeStatus.
+func (in *TestTypeStatus) DeepCopy() *TestTypeStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(TestTypeStatus)
+	in.DeepCopyInto(out)
+	return out
+}

staging/src/k8s.io/code-generator/examples/single/api/v1/zz_generated.defaults.go

@@ -0,0 +1,33 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by defaulter-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// RegisterDefaults adds defaulters functions to the given scheme.
+// Public to allow building arbitrary schemes.
+// All generated defaulters are covering - they call all nested defaulters.
+func RegisterDefaults(scheme *runtime.Scheme) error {
+	return nil
+}

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/api/v1/clustertesttype.go

@@ -0,0 +1,215 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
+)
+
+// ClusterTestTypeApplyConfiguration represents a declarative configuration of the ClusterTestType type for use
+// with apply.
+type ClusterTestTypeApplyConfiguration struct {
+	v1.TypeMetaApplyConfiguration    `json:",inline"`
+	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
+	Status                           *ClusterTestTypeStatusApplyConfiguration `json:"status,omitempty"`
+}
+
+// ClusterTestType constructs a declarative configuration of the ClusterTestType type for use with
+// apply.
+func ClusterTestType(name string) *ClusterTestTypeApplyConfiguration {
+	b := &ClusterTestTypeApplyConfiguration{}
+	b.WithName(name)
+	b.WithKind("ClusterTestType")
+	b.WithAPIVersion("example.crd.code-generator.k8s.io/v1")
+	return b
+}
+
+// WithKind sets the Kind field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Kind field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithKind(value string) *ClusterTestTypeApplyConfiguration {
+	b.Kind = &value
+	return b
+}
+
+// WithAPIVersion sets the APIVersion field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the APIVersion field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithAPIVersion(value string) *ClusterTestTypeApplyConfiguration {
+	b.APIVersion = &value
+	return b
+}
+
+// WithName sets the Name field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Name field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithName(value string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Name = &value
+	return b
+}
+
+// WithGenerateName sets the GenerateName field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the GenerateName field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithGenerateName(value string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.GenerateName = &value
+	return b
+}
+
+// WithNamespace sets the Namespace field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Namespace field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithNamespace(value string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Namespace = &value
+	return b
+}
+
+// WithUID sets the UID field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the UID field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithUID(value types.UID) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.UID = &value
+	return b
+}
+
+// WithResourceVersion sets the ResourceVersion field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the ResourceVersion field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithResourceVersion(value string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.ResourceVersion = &value
+	return b
+}
+
+// WithGeneration sets the Generation field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Generation field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithGeneration(value int64) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Generation = &value
+	return b
+}
+
+// WithCreationTimestamp sets the CreationTimestamp field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the CreationTimestamp field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithCreationTimestamp(value metav1.Time) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.CreationTimestamp = &value
+	return b
+}
+
+// WithDeletionTimestamp sets the DeletionTimestamp field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the DeletionTimestamp field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithDeletionTimestamp(value metav1.Time) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.DeletionTimestamp = &value
+	return b
+}
+
+// WithDeletionGracePeriodSeconds sets the DeletionGracePeriodSeconds field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the DeletionGracePeriodSeconds field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithDeletionGracePeriodSeconds(value int64) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.DeletionGracePeriodSeconds = &value
+	return b
+}
+
+// WithLabels puts the entries into the Labels field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, the entries provided by each call will be put on the Labels field,
+// overwriting an existing map entries in Labels field with the same key.
+func (b *ClusterTestTypeApplyConfiguration) WithLabels(entries map[string]string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	if b.Labels == nil && len(entries) > 0 {
+		b.Labels = make(map[string]string, len(entries))
+	}
+	for k, v := range entries {
+		b.Labels[k] = v
+	}
+	return b
+}
+
+// WithAnnotations puts the entries into the Annotations field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, the entries provided by each call will be put on the Annotations field,
+// overwriting an existing map entries in Annotations field with the same key.
+func (b *ClusterTestTypeApplyConfiguration) WithAnnotations(entries map[string]string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	if b.Annotations == nil && len(entries) > 0 {
+		b.Annotations = make(map[string]string, len(entries))
+	}
+	for k, v := range entries {
+		b.Annotations[k] = v
+	}
+	return b
+}
+
+// WithOwnerReferences adds the given value to the OwnerReferences field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, values provided by each call will be appended to the OwnerReferences field.
+func (b *ClusterTestTypeApplyConfiguration) WithOwnerReferences(values ...*v1.OwnerReferenceApplyConfiguration) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	for i := range values {
+		if values[i] == nil {
+			panic("nil value passed to WithOwnerReferences")
+		}
+		b.OwnerReferences = append(b.OwnerReferences, *values[i])
+	}
+	return b
+}
+
+// WithFinalizers adds the given value to the Finalizers field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, values provided by each call will be appended to the Finalizers field.
+func (b *ClusterTestTypeApplyConfiguration) WithFinalizers(values ...string) *ClusterTestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	for i := range values {
+		b.Finalizers = append(b.Finalizers, values[i])
+	}
+	return b
+}
+
+func (b *ClusterTestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists() {
+	if b.ObjectMetaApplyConfiguration == nil {
+		b.ObjectMetaApplyConfiguration = &v1.ObjectMetaApplyConfiguration{}
+	}
+}
+
+// WithStatus sets the Status field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Status field is set to the value of the last call.
+func (b *ClusterTestTypeApplyConfiguration) WithStatus(value *ClusterTestTypeStatusApplyConfiguration) *ClusterTestTypeApplyConfiguration {
+	b.Status = value
+	return b
+}
+
+// GetName retrieves the value of the Name field in the declarative configuration.
+func (b *ClusterTestTypeApplyConfiguration) GetName() *string {
+	b.ensureObjectMetaApplyConfigurationExists()
+	return b.Name
+}

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/api/v1/clustertesttypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// ClusterTestTypeStatusApplyConfiguration represents a declarative configuration of the ClusterTestTypeStatus type for use
+// with apply.
+type ClusterTestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// ClusterTestTypeStatusApplyConfiguration constructs a declarative configuration of the ClusterTestTypeStatus type for use with
+// apply.
+func ClusterTestTypeStatus() *ClusterTestTypeStatusApplyConfiguration {
+	return &ClusterTestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *ClusterTestTypeStatusApplyConfiguration) WithBlah(value string) *ClusterTestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/api/v1/testtype.go

@@ -0,0 +1,216 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
+)
+
+// TestTypeApplyConfiguration represents a declarative configuration of the TestType type for use
+// with apply.
+type TestTypeApplyConfiguration struct {
+	v1.TypeMetaApplyConfiguration    `json:",inline"`
+	*v1.ObjectMetaApplyConfiguration `json:"metadata,omitempty"`
+	Status                           *TestTypeStatusApplyConfiguration `json:"status,omitempty"`
+}
+
+// TestType constructs a declarative configuration of the TestType type for use with
+// apply.
+func TestType(name, namespace string) *TestTypeApplyConfiguration {
+	b := &TestTypeApplyConfiguration{}
+	b.WithName(name)
+	b.WithNamespace(namespace)
+	b.WithKind("TestType")
+	b.WithAPIVersion("example.crd.code-generator.k8s.io/v1")
+	return b
+}
+
+// WithKind sets the Kind field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Kind field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithKind(value string) *TestTypeApplyConfiguration {
+	b.Kind = &value
+	return b
+}
+
+// WithAPIVersion sets the APIVersion field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the APIVersion field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithAPIVersion(value string) *TestTypeApplyConfiguration {
+	b.APIVersion = &value
+	return b
+}
+
+// WithName sets the Name field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Name field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithName(value string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Name = &value
+	return b
+}
+
+// WithGenerateName sets the GenerateName field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the GenerateName field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithGenerateName(value string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.GenerateName = &value
+	return b
+}
+
+// WithNamespace sets the Namespace field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Namespace field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithNamespace(value string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Namespace = &value
+	return b
+}
+
+// WithUID sets the UID field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the UID field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithUID(value types.UID) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.UID = &value
+	return b
+}
+
+// WithResourceVersion sets the ResourceVersion field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the ResourceVersion field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithResourceVersion(value string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.ResourceVersion = &value
+	return b
+}
+
+// WithGeneration sets the Generation field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Generation field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithGeneration(value int64) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.Generation = &value
+	return b
+}
+
+// WithCreationTimestamp sets the CreationTimestamp field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the CreationTimestamp field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithCreationTimestamp(value metav1.Time) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.CreationTimestamp = &value
+	return b
+}
+
+// WithDeletionTimestamp sets the DeletionTimestamp field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the DeletionTimestamp field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithDeletionTimestamp(value metav1.Time) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.DeletionTimestamp = &value
+	return b
+}
+
+// WithDeletionGracePeriodSeconds sets the DeletionGracePeriodSeconds field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the DeletionGracePeriodSeconds field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithDeletionGracePeriodSeconds(value int64) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	b.DeletionGracePeriodSeconds = &value
+	return b
+}
+
+// WithLabels puts the entries into the Labels field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, the entries provided by each call will be put on the Labels field,
+// overwriting an existing map entries in Labels field with the same key.
+func (b *TestTypeApplyConfiguration) WithLabels(entries map[string]string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	if b.Labels == nil && len(entries) > 0 {
+		b.Labels = make(map[string]string, len(entries))
+	}
+	for k, v := range entries {
+		b.Labels[k] = v
+	}
+	return b
+}
+
+// WithAnnotations puts the entries into the Annotations field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, the entries provided by each call will be put on the Annotations field,
+// overwriting an existing map entries in Annotations field with the same key.
+func (b *TestTypeApplyConfiguration) WithAnnotations(entries map[string]string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	if b.Annotations == nil && len(entries) > 0 {
+		b.Annotations = make(map[string]string, len(entries))
+	}
+	for k, v := range entries {
+		b.Annotations[k] = v
+	}
+	return b
+}
+
+// WithOwnerReferences adds the given value to the OwnerReferences field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, values provided by each call will be appended to the OwnerReferences field.
+func (b *TestTypeApplyConfiguration) WithOwnerReferences(values ...*v1.OwnerReferenceApplyConfiguration) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	for i := range values {
+		if values[i] == nil {
+			panic("nil value passed to WithOwnerReferences")
+		}
+		b.OwnerReferences = append(b.OwnerReferences, *values[i])
+	}
+	return b
+}
+
+// WithFinalizers adds the given value to the Finalizers field in the declarative configuration
+// and returns the receiver, so that objects can be build by chaining "With" function invocations.
+// If called multiple times, values provided by each call will be appended to the Finalizers field.
+func (b *TestTypeApplyConfiguration) WithFinalizers(values ...string) *TestTypeApplyConfiguration {
+	b.ensureObjectMetaApplyConfigurationExists()
+	for i := range values {
+		b.Finalizers = append(b.Finalizers, values[i])
+	}
+	return b
+}
+
+func (b *TestTypeApplyConfiguration) ensureObjectMetaApplyConfigurationExists() {
+	if b.ObjectMetaApplyConfiguration == nil {
+		b.ObjectMetaApplyConfiguration = &v1.ObjectMetaApplyConfiguration{}
+	}
+}
+
+// WithStatus sets the Status field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Status field is set to the value of the last call.
+func (b *TestTypeApplyConfiguration) WithStatus(value *TestTypeStatusApplyConfiguration) *TestTypeApplyConfiguration {
+	b.Status = value
+	return b
+}
+
+// GetName retrieves the value of the Name field in the declarative configuration.
+func (b *TestTypeApplyConfiguration) GetName() *string {
+	b.ensureObjectMetaApplyConfigurationExists()
+	return b.Name
+}

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/api/v1/testtypestatus.go

@@ -0,0 +1,39 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+// TestTypeStatusApplyConfiguration represents a declarative configuration of the TestTypeStatus type for use
+// with apply.
+type TestTypeStatusApplyConfiguration struct {
+	Blah *string `json:"blah,omitempty"`
+}
+
+// TestTypeStatusApplyConfiguration constructs a declarative configuration of the TestTypeStatus type for use with
+// apply.
+func TestTypeStatus() *TestTypeStatusApplyConfiguration {
+	return &TestTypeStatusApplyConfiguration{}
+}
+
+// WithBlah sets the Blah field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Blah field is set to the value of the last call.
+func (b *TestTypeStatusApplyConfiguration) WithBlah(value string) *TestTypeStatusApplyConfiguration {
+	b.Blah = &value
+	return b
+}

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/internal/internal.go

@@ -0,0 +1,62 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package internal
+
+import (
+	"fmt"
+	"sync"
+
+	typed "sigs.k8s.io/structured-merge-diff/v4/typed"
+)
+
+func Parser() *typed.Parser {
+	parserOnce.Do(func() {
+		var err error
+		parser, err = typed.NewParser(schemaYAML)
+		if err != nil {
+			panic(fmt.Sprintf("Failed to parse schema: %v", err))
+		}
+	})
+	return parser
+}
+
+var parserOnce sync.Once
+var parser *typed.Parser
+var schemaYAML = typed.YAMLObject(`types:
+- name: __untyped_atomic_
+  scalar: untyped
+  list:
+    elementType:
+      namedType: __untyped_atomic_
+    elementRelationship: atomic
+  map:
+    elementType:
+      namedType: __untyped_atomic_
+    elementRelationship: atomic
+- name: __untyped_deduced_
+  scalar: untyped
+  list:
+    elementType:
+      namedType: __untyped_atomic_
+    elementRelationship: atomic
+  map:
+    elementType:
+      namedType: __untyped_deduced_
+    elementRelationship: separable
+`)

staging/src/k8s.io/code-generator/examples/single/applyconfiguration/utils.go

@@ -0,0 +1,50 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package applyconfiguration
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	apiv1 "k8s.io/code-generator/examples/single/applyconfiguration/api/v1"
+	internal "k8s.io/code-generator/examples/single/applyconfiguration/internal"
+)
+
+// ForKind returns an apply configuration type for the given GroupVersionKind, or nil if no
+// apply configuration type exists for the given GroupVersionKind.
+func ForKind(kind schema.GroupVersionKind) interface{} {
+	switch kind {
+	// Group=example.crd.code-generator.k8s.io, Version=v1
+	case v1.SchemeGroupVersion.WithKind("ClusterTestType"):
+		return &apiv1.ClusterTestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("ClusterTestTypeStatus"):
+		return &apiv1.ClusterTestTypeStatusApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("TestType"):
+		return &apiv1.TestTypeApplyConfiguration{}
+	case v1.SchemeGroupVersion.WithKind("TestTypeStatus"):
+		return &apiv1.TestTypeStatusApplyConfiguration{}
+
+	}
+	return nil
+}
+
+func NewTypeConverter(scheme *runtime.Scheme) *testing.TypeConverter {
+	return &testing.TypeConverter{Scheme: scheme, TypeResolver: internal.Parser()}
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/clientset.go

@@ -0,0 +1,120 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package versioned
+
+import (
+	"fmt"
+	"net/http"
+
+	discovery "k8s.io/client-go/discovery"
+	rest "k8s.io/client-go/rest"
+	flowcontrol "k8s.io/client-go/util/flowcontrol"
+	examplev1 "k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1"
+)
+
+type Interface interface {
+	Discovery() discovery.DiscoveryInterface
+	ExampleV1() examplev1.ExampleV1Interface
+}
+
+// Clientset contains the clients for groups.
+type Clientset struct {
+	*discovery.DiscoveryClient
+	exampleV1 *examplev1.ExampleV1Client
+}
+
+// ExampleV1 retrieves the ExampleV1Client
+func (c *Clientset) ExampleV1() examplev1.ExampleV1Interface {
+	return c.exampleV1
+}
+
+// Discovery retrieves the DiscoveryClient
+func (c *Clientset) Discovery() discovery.DiscoveryInterface {
+	if c == nil {
+		return nil
+	}
+	return c.DiscoveryClient
+}
+
+// NewForConfig creates a new Clientset for the given config.
+// If config's RateLimiter is not set and QPS and Burst are acceptable,
+// NewForConfig will generate a rate-limiter in configShallowCopy.
+// NewForConfig is equivalent to NewForConfigAndClient(c, httpClient),
+// where httpClient was generated with rest.HTTPClientFor(c).
+func NewForConfig(c *rest.Config) (*Clientset, error) {
+	configShallowCopy := *c
+
+	if configShallowCopy.UserAgent == "" {
+		configShallowCopy.UserAgent = rest.DefaultKubernetesUserAgent()
+	}
+
+	// share the transport between all clients
+	httpClient, err := rest.HTTPClientFor(&configShallowCopy)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewForConfigAndClient(&configShallowCopy, httpClient)
+}
+
+// NewForConfigAndClient creates a new Clientset for the given config and http client.
+// Note the http client provided takes precedence over the configured transport values.
+// If config's RateLimiter is not set and QPS and Burst are acceptable,
+// NewForConfigAndClient will generate a rate-limiter in configShallowCopy.
+func NewForConfigAndClient(c *rest.Config, httpClient *http.Client) (*Clientset, error) {
+	configShallowCopy := *c
+	if configShallowCopy.RateLimiter == nil && configShallowCopy.QPS > 0 {
+		if configShallowCopy.Burst <= 0 {
+			return nil, fmt.Errorf("burst is required to be greater than 0 when RateLimiter is not set and QPS is set to greater than 0")
+		}
+		configShallowCopy.RateLimiter = flowcontrol.NewTokenBucketRateLimiter(configShallowCopy.QPS, configShallowCopy.Burst)
+	}
+
+	var cs Clientset
+	var err error
+	cs.exampleV1, err = examplev1.NewForConfigAndClient(&configShallowCopy, httpClient)
+	if err != nil {
+		return nil, err
+	}
+
+	cs.DiscoveryClient, err = discovery.NewDiscoveryClientForConfigAndClient(&configShallowCopy, httpClient)
+	if err != nil {
+		return nil, err
+	}
+	return &cs, nil
+}
+
+// NewForConfigOrDie creates a new Clientset for the given config and
+// panics if there is an error in the config.
+func NewForConfigOrDie(c *rest.Config) *Clientset {
+	cs, err := NewForConfig(c)
+	if err != nil {
+		panic(err)
+	}
+	return cs
+}
+
+// New creates a new Clientset for the given RESTClient.
+func New(c rest.Interface) *Clientset {
+	var cs Clientset
+	cs.exampleV1 = examplev1.New(c)
+
+	cs.DiscoveryClient = discovery.NewDiscoveryClient(c)
+	return &cs
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/clientset_generated.go

@@ -0,0 +1,122 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/discovery"
+	fakediscovery "k8s.io/client-go/discovery/fake"
+	"k8s.io/client-go/testing"
+	applyconfiguration "k8s.io/code-generator/examples/single/applyconfiguration"
+	clientset "k8s.io/code-generator/examples/single/clientset/versioned"
+	examplev1 "k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1"
+	fakeexamplev1 "k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/fake"
+)
+
+// NewSimpleClientset returns a clientset that will respond with the provided objects.
+// It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
+// without applying any field management, validations and/or defaults. It shouldn't be considered a replacement
+// for a real clientset and is mostly useful in simple unit tests.
+//
+// DEPRECATED: NewClientset replaces this with support for field management, which significantly improves
+// server side apply testing. NewClientset is only available when apply configurations are generated (e.g.
+// via --with-applyconfig).
+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}
+	cs.AddReactor("*", "*", testing.ObjectReaction(o))
+	cs.AddWatchReactor("*", func(action testing.Action) (handled bool, ret watch.Interface, err error) {
+		gvr := action.GetResource()
+		ns := action.GetNamespace()
+		watch, err := o.Watch(gvr, ns)
+		if err != nil {
+			return false, nil, err
+		}
+		return true, watch, nil
+	})
+
+	return cs
+}
+
+// Clientset implements clientset.Interface. Meant to be embedded into a
+// struct to get a default implementation. This makes faking out just the method
+// you want to test easier.
+type Clientset struct {
+	testing.Fake
+	discovery *fakediscovery.FakeDiscovery
+	tracker   testing.ObjectTracker
+}
+
+func (c *Clientset) Discovery() discovery.DiscoveryInterface {
+	return c.discovery
+}
+
+func (c *Clientset) Tracker() testing.ObjectTracker {
+	return c.tracker
+}
+
+// NewClientset returns a clientset that will respond with the provided objects.
+// It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
+// without applying any validations and/or defaults. It shouldn't be considered a replacement
+// for a real clientset and is mostly useful in simple unit tests.
+func NewClientset(objects ...runtime.Object) *Clientset {
+	o := testing.NewFieldManagedObjectTracker(
+		scheme,
+		codecs.UniversalDecoder(),
+		applyconfiguration.NewTypeConverter(scheme),
+	)
+	for _, obj := range objects {
+		if err := o.Add(obj); err != nil {
+			panic(err)
+		}
+	}
+
+	cs := &Clientset{tracker: o}
+	cs.discovery = &fakediscovery.FakeDiscovery{Fake: &cs.Fake}
+	cs.AddReactor("*", "*", testing.ObjectReaction(o))
+	cs.AddWatchReactor("*", func(action testing.Action) (handled bool, ret watch.Interface, err error) {
+		gvr := action.GetResource()
+		ns := action.GetNamespace()
+		watch, err := o.Watch(gvr, ns)
+		if err != nil {
+			return false, nil, err
+		}
+		return true, watch, nil
+	})
+
+	return cs
+}
+
+var (
+	_ clientset.Interface = &Clientset{}
+	_ testing.FakeClient  = &Clientset{}
+)
+
+// ExampleV1 retrieves the ExampleV1Client
+func (c *Clientset) ExampleV1() examplev1.ExampleV1Interface {
+	return &fakeexamplev1.FakeExampleV1{Fake: &c.Fake}
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// This package has the automatically generated fake clientset.
+package fake

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/register.go

@@ -0,0 +1,56 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	serializer "k8s.io/apimachinery/pkg/runtime/serializer"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	examplev1 "k8s.io/code-generator/examples/single/api/v1"
+)
+
+var scheme = runtime.NewScheme()
+var codecs = serializer.NewCodecFactory(scheme)
+
+var localSchemeBuilder = runtime.SchemeBuilder{
+	examplev1.AddToScheme,
+}
+
+// AddToScheme adds all types of this clientset into the given scheme. This allows composition
+// of clientsets, like in:
+//
+//	import (
+//	  "k8s.io/client-go/kubernetes"
+//	  clientsetscheme "k8s.io/client-go/kubernetes/scheme"
+//	  aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
+//	)
+//
+//	kclientset, _ := kubernetes.NewForConfig(c)
+//	_ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
+//
+// After this, RawExtensions in Kubernetes types will serialize kube-aggregator types
+// correctly.
+var AddToScheme = localSchemeBuilder.AddToScheme
+
+func init() {
+	v1.AddToGroupVersion(scheme, schema.GroupVersion{Version: "v1"})
+	utilruntime.Must(AddToScheme(scheme))
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/scheme/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// This package contains the scheme of the automatically generated clientset.
+package scheme

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/scheme/register.go

@@ -0,0 +1,56 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package scheme
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	serializer "k8s.io/apimachinery/pkg/runtime/serializer"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	examplev1 "k8s.io/code-generator/examples/single/api/v1"
+)
+
+var Scheme = runtime.NewScheme()
+var Codecs = serializer.NewCodecFactory(Scheme)
+var ParameterCodec = runtime.NewParameterCodec(Scheme)
+var localSchemeBuilder = runtime.SchemeBuilder{
+	examplev1.AddToScheme,
+}
+
+// AddToScheme adds all types of this clientset into the given scheme. This allows composition
+// of clientsets, like in:
+//
+//	import (
+//	  "k8s.io/client-go/kubernetes"
+//	  clientsetscheme "k8s.io/client-go/kubernetes/scheme"
+//	  aggregatorclientsetscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
+//	)
+//
+//	kclientset, _ := kubernetes.NewForConfig(c)
+//	_ = aggregatorclientsetscheme.AddToScheme(clientsetscheme.Scheme)
+//
+// After this, RawExtensions in Kubernetes types will serialize kube-aggregator types
+// correctly.
+var AddToScheme = localSchemeBuilder.AddToScheme
+
+func init() {
+	v1.AddToGroupVersion(Scheme, schema.GroupVersion{Version: "v1"})
+	utilruntime.Must(AddToScheme(Scheme))
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/api_client.go

@@ -0,0 +1,112 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"net/http"
+
+	rest "k8s.io/client-go/rest"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	"k8s.io/code-generator/examples/single/clientset/versioned/scheme"
+)
+
+type ExampleV1Interface interface {
+	RESTClient() rest.Interface
+	ClusterTestTypesGetter
+	TestTypesGetter
+}
+
+// ExampleV1Client is used to interact with features provided by the example.crd.code-generator.k8s.io group.
+type ExampleV1Client struct {
+	restClient rest.Interface
+}
+
+func (c *ExampleV1Client) ClusterTestTypes() ClusterTestTypeInterface {
+	return newClusterTestTypes(c)
+}
+
+func (c *ExampleV1Client) TestTypes(namespace string) TestTypeInterface {
+	return newTestTypes(c, namespace)
+}
+
+// NewForConfig creates a new ExampleV1Client for the given config.
+// NewForConfig is equivalent to NewForConfigAndClient(c, httpClient),
+// where httpClient was generated with rest.HTTPClientFor(c).
+func NewForConfig(c *rest.Config) (*ExampleV1Client, error) {
+	config := *c
+	if err := setConfigDefaults(&config); err != nil {
+		return nil, err
+	}
+	httpClient, err := rest.HTTPClientFor(&config)
+	if err != nil {
+		return nil, err
+	}
+	return NewForConfigAndClient(&config, httpClient)
+}
+
+// NewForConfigAndClient creates a new ExampleV1Client for the given config and http client.
+// Note the http client provided takes precedence over the configured transport values.
+func NewForConfigAndClient(c *rest.Config, h *http.Client) (*ExampleV1Client, error) {
+	config := *c
+	if err := setConfigDefaults(&config); err != nil {
+		return nil, err
+	}
+	client, err := rest.RESTClientForConfigAndClient(&config, h)
+	if err != nil {
+		return nil, err
+	}
+	return &ExampleV1Client{client}, nil
+}
+
+// NewForConfigOrDie creates a new ExampleV1Client for the given config and
+// panics if there is an error in the config.
+func NewForConfigOrDie(c *rest.Config) *ExampleV1Client {
+	client, err := NewForConfig(c)
+	if err != nil {
+		panic(err)
+	}
+	return client
+}
+
+// New creates a new ExampleV1Client for the given RESTClient.
+func New(c rest.Interface) *ExampleV1Client {
+	return &ExampleV1Client{c}
+}
+
+func setConfigDefaults(config *rest.Config) error {
+	gv := v1.SchemeGroupVersion
+	config.GroupVersion = &gv
+	config.APIPath = "/apis"
+	config.NegotiatedSerializer = scheme.Codecs.WithoutConversion()
+
+	if config.UserAgent == "" {
+		config.UserAgent = rest.DefaultKubernetesUserAgent()
+	}
+
+	return nil
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *ExampleV1Client) RESTClient() rest.Interface {
+	if c == nil {
+		return nil
+	}
+	return c.restClient
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/clustertesttype.go

@@ -0,0 +1,104 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+
+	autoscalingv1 "k8s.io/api/autoscaling/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	gentype "k8s.io/client-go/gentype"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	apiv1 "k8s.io/code-generator/examples/single/applyconfiguration/api/v1"
+	scheme "k8s.io/code-generator/examples/single/clientset/versioned/scheme"
+)
+
+// ClusterTestTypesGetter has a method to return a ClusterTestTypeInterface.
+// A group's client should implement this interface.
+type ClusterTestTypesGetter interface {
+	ClusterTestTypes() ClusterTestTypeInterface
+}
+
+// ClusterTestTypeInterface has methods to work with ClusterTestType resources.
+type ClusterTestTypeInterface interface {
+	Create(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.CreateOptions) (*v1.ClusterTestType, error)
+	Update(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.UpdateOptions) (*v1.ClusterTestType, error)
+	// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+	UpdateStatus(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.UpdateOptions) (*v1.ClusterTestType, error)
+	Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error
+	DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error
+	Get(ctx context.Context, name string, opts metav1.GetOptions) (*v1.ClusterTestType, error)
+	List(ctx context.Context, opts metav1.ListOptions) (*v1.ClusterTestTypeList, error)
+	Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error)
+	Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.ClusterTestType, err error)
+	Apply(ctx context.Context, clusterTestType *apiv1.ClusterTestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.ClusterTestType, err error)
+	// Add a +genclient:noStatus comment above the type to avoid generating ApplyStatus().
+	ApplyStatus(ctx context.Context, clusterTestType *apiv1.ClusterTestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.ClusterTestType, err error)
+	GetScale(ctx context.Context, clusterTestTypeName string, options metav1.GetOptions) (*autoscalingv1.Scale, error)
+	UpdateScale(ctx context.Context, clusterTestTypeName string, scale *autoscalingv1.Scale, opts metav1.UpdateOptions) (*autoscalingv1.Scale, error)
+
+	ClusterTestTypeExpansion
+}
+
+// clusterTestTypes implements ClusterTestTypeInterface
+type clusterTestTypes struct {
+	*gentype.ClientWithListAndApply[*v1.ClusterTestType, *v1.ClusterTestTypeList, *apiv1.ClusterTestTypeApplyConfiguration]
+}
+
+// newClusterTestTypes returns a ClusterTestTypes
+func newClusterTestTypes(c *ExampleV1Client) *clusterTestTypes {
+	return &clusterTestTypes{
+		gentype.NewClientWithListAndApply[*v1.ClusterTestType, *v1.ClusterTestTypeList, *apiv1.ClusterTestTypeApplyConfiguration](
+			"clustertesttypes",
+			c.RESTClient(),
+			scheme.ParameterCodec,
+			"",
+			func() *v1.ClusterTestType { return &v1.ClusterTestType{} },
+			func() *v1.ClusterTestTypeList { return &v1.ClusterTestTypeList{} }),
+	}
+}
+
+// GetScale takes name of the clusterTestType, and returns the corresponding autoscalingv1.Scale object, and an error if there is any.
+func (c *clusterTestTypes) GetScale(ctx context.Context, clusterTestTypeName string, options metav1.GetOptions) (result *autoscalingv1.Scale, err error) {
+	result = &autoscalingv1.Scale{}
+	err = c.GetClient().Get().
+		Resource("clustertesttypes").
+		Name(clusterTestTypeName).
+		SubResource("scale").
+		VersionedParams(&options, scheme.ParameterCodec).
+		Do(ctx).
+		Into(result)
+	return
+}
+
+// UpdateScale takes the top resource name and the representation of a scale and updates it. Returns the server's representation of the scale, and an error, if there is any.
+func (c *clusterTestTypes) UpdateScale(ctx context.Context, clusterTestTypeName string, scale *autoscalingv1.Scale, opts metav1.UpdateOptions) (result *autoscalingv1.Scale, err error) {
+	result = &autoscalingv1.Scale{}
+	err = c.GetClient().Put().
+		Resource("clustertesttypes").
+		Name(clusterTestTypeName).
+		SubResource("scale").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Body(scale).
+		Do(ctx).
+		Into(result)
+	return
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// This package has the automatically generated typed clients.
+package v1

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/fake/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+// Package fake has the automatically generated clients.
+package fake

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/fake/fake_api_client.go

@@ -0,0 +1,44 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	rest "k8s.io/client-go/rest"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1"
+)
+
+type FakeExampleV1 struct {
+	*testing.Fake
+}
+
+func (c *FakeExampleV1) ClusterTestTypes() v1.ClusterTestTypeInterface {
+	return &FakeClusterTestTypes{c}
+}
+
+func (c *FakeExampleV1) TestTypes(namespace string) v1.TestTypeInterface {
+	return &FakeTestTypes{c, namespace}
+}
+
+// RESTClient returns a RESTClient that is used to communicate
+// with API server by this client implementation.
+func (c *FakeExampleV1) RESTClient() rest.Interface {
+	var ret *rest.RESTClient
+	return ret
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/fake/fake_clustertesttype.go

@@ -0,0 +1,209 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	"context"
+	json "encoding/json"
+	"fmt"
+
+	autoscalingv1 "k8s.io/api/autoscaling/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	labels "k8s.io/apimachinery/pkg/labels"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	apiv1 "k8s.io/code-generator/examples/single/applyconfiguration/api/v1"
+)
+
+// FakeClusterTestTypes implements ClusterTestTypeInterface
+type FakeClusterTestTypes struct {
+	Fake *FakeExampleV1
+}
+
+var clustertesttypesResource = v1.SchemeGroupVersion.WithResource("clustertesttypes")
+
+var clustertesttypesKind = v1.SchemeGroupVersion.WithKind("ClusterTestType")
+
+// Get takes name of the clusterTestType, and returns the corresponding clusterTestType object, and an error if there is any.
+func (c *FakeClusterTestTypes) Get(ctx context.Context, name string, options metav1.GetOptions) (result *v1.ClusterTestType, err error) {
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootGetActionWithOptions(clustertesttypesResource, name, options), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// List takes label and field selectors, and returns the list of ClusterTestTypes that match those selectors.
+func (c *FakeClusterTestTypes) List(ctx context.Context, opts metav1.ListOptions) (result *v1.ClusterTestTypeList, err error) {
+	emptyResult := &v1.ClusterTestTypeList{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootListActionWithOptions(clustertesttypesResource, clustertesttypesKind, opts), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+
+	label, _, _ := testing.ExtractFromListOptions(opts)
+	if label == nil {
+		label = labels.Everything()
+	}
+	list := &v1.ClusterTestTypeList{ListMeta: obj.(*v1.ClusterTestTypeList).ListMeta}
+	for _, item := range obj.(*v1.ClusterTestTypeList).Items {
+		if label.Matches(labels.Set(item.Labels)) {
+			list.Items = append(list.Items, item)
+		}
+	}
+	return list, err
+}
+
+// Watch returns a watch.Interface that watches the requested clusterTestTypes.
+func (c *FakeClusterTestTypes) Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error) {
+	return c.Fake.
+		InvokesWatch(testing.NewRootWatchActionWithOptions(clustertesttypesResource, opts))
+}
+
+// Create takes the representation of a clusterTestType and creates it.  Returns the server's representation of the clusterTestType, and an error, if there is any.
+func (c *FakeClusterTestTypes) Create(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.CreateOptions) (result *v1.ClusterTestType, err error) {
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootCreateActionWithOptions(clustertesttypesResource, clusterTestType, opts), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// Update takes the representation of a clusterTestType and updates it. Returns the server's representation of the clusterTestType, and an error, if there is any.
+func (c *FakeClusterTestTypes) Update(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.UpdateOptions) (result *v1.ClusterTestType, err error) {
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootUpdateActionWithOptions(clustertesttypesResource, clusterTestType, opts), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// UpdateStatus was generated because the type contains a Status member.
+// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+func (c *FakeClusterTestTypes) UpdateStatus(ctx context.Context, clusterTestType *v1.ClusterTestType, opts metav1.UpdateOptions) (result *v1.ClusterTestType, err error) {
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootUpdateSubresourceActionWithOptions(clustertesttypesResource, "status", clusterTestType, opts), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// Delete takes name of the clusterTestType and deletes it. Returns an error if one occurs.
+func (c *FakeClusterTestTypes) Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error {
+	_, err := c.Fake.
+		Invokes(testing.NewRootDeleteActionWithOptions(clustertesttypesResource, name, opts), &v1.ClusterTestType{})
+	return err
+}
+
+// DeleteCollection deletes a collection of objects.
+func (c *FakeClusterTestTypes) DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error {
+	action := testing.NewRootDeleteCollectionActionWithOptions(clustertesttypesResource, opts, listOpts)
+
+	_, err := c.Fake.Invokes(action, &v1.ClusterTestTypeList{})
+	return err
+}
+
+// Patch applies the patch and returns the patched clusterTestType.
+func (c *FakeClusterTestTypes) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.ClusterTestType, err error) {
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootPatchSubresourceActionWithOptions(clustertesttypesResource, name, pt, data, opts, subresources...), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// Apply takes the given apply declarative configuration, applies it and returns the applied clusterTestType.
+func (c *FakeClusterTestTypes) Apply(ctx context.Context, clusterTestType *apiv1.ClusterTestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.ClusterTestType, err error) {
+	if clusterTestType == nil {
+		return nil, fmt.Errorf("clusterTestType provided to Apply must not be nil")
+	}
+	data, err := json.Marshal(clusterTestType)
+	if err != nil {
+		return nil, err
+	}
+	name := clusterTestType.Name
+	if name == nil {
+		return nil, fmt.Errorf("clusterTestType.Name must be provided to Apply")
+	}
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootPatchSubresourceActionWithOptions(clustertesttypesResource, *name, types.ApplyPatchType, data, opts.ToPatchOptions()), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// ApplyStatus was generated because the type contains a Status member.
+// Add a +genclient:noStatus comment above the type to avoid generating ApplyStatus().
+func (c *FakeClusterTestTypes) ApplyStatus(ctx context.Context, clusterTestType *apiv1.ClusterTestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.ClusterTestType, err error) {
+	if clusterTestType == nil {
+		return nil, fmt.Errorf("clusterTestType provided to Apply must not be nil")
+	}
+	data, err := json.Marshal(clusterTestType)
+	if err != nil {
+		return nil, err
+	}
+	name := clusterTestType.Name
+	if name == nil {
+		return nil, fmt.Errorf("clusterTestType.Name must be provided to Apply")
+	}
+	emptyResult := &v1.ClusterTestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootPatchSubresourceActionWithOptions(clustertesttypesResource, *name, types.ApplyPatchType, data, opts.ToPatchOptions(), "status"), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.ClusterTestType), err
+}
+
+// GetScale takes name of the clusterTestType, and returns the corresponding scale object, and an error if there is any.
+func (c *FakeClusterTestTypes) GetScale(ctx context.Context, clusterTestTypeName string, options metav1.GetOptions) (result *autoscalingv1.Scale, err error) {
+	emptyResult := &autoscalingv1.Scale{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootGetSubresourceActionWithOptions(clustertesttypesResource, "scale", clusterTestTypeName, options), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*autoscalingv1.Scale), err
+}
+
+// UpdateScale takes the representation of a scale and updates it. Returns the server's representation of the scale, and an error, if there is any.
+func (c *FakeClusterTestTypes) UpdateScale(ctx context.Context, clusterTestTypeName string, scale *autoscalingv1.Scale, opts metav1.UpdateOptions) (result *autoscalingv1.Scale, err error) {
+	emptyResult := &autoscalingv1.Scale{}
+	obj, err := c.Fake.
+		Invokes(testing.NewRootUpdateSubresourceActionWithOptions(clustertesttypesResource, "scale", scale, opts), emptyResult)
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*autoscalingv1.Scale), err
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/fake/fake_testtype.go

@@ -0,0 +1,197 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package fake
+
+import (
+	"context"
+	json "encoding/json"
+	"fmt"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	labels "k8s.io/apimachinery/pkg/labels"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	testing "k8s.io/client-go/testing"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	apiv1 "k8s.io/code-generator/examples/single/applyconfiguration/api/v1"
+)
+
+// FakeTestTypes implements TestTypeInterface
+type FakeTestTypes struct {
+	Fake *FakeExampleV1
+	ns   string
+}
+
+var testtypesResource = v1.SchemeGroupVersion.WithResource("testtypes")
+
+var testtypesKind = v1.SchemeGroupVersion.WithKind("TestType")
+
+// Get takes name of the testType, and returns the corresponding testType object, and an error if there is any.
+func (c *FakeTestTypes) Get(ctx context.Context, name string, options metav1.GetOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewGetActionWithOptions(testtypesResource, c.ns, name, options), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// List takes label and field selectors, and returns the list of TestTypes that match those selectors.
+func (c *FakeTestTypes) List(ctx context.Context, opts metav1.ListOptions) (result *v1.TestTypeList, err error) {
+	emptyResult := &v1.TestTypeList{}
+	obj, err := c.Fake.
+		Invokes(testing.NewListActionWithOptions(testtypesResource, testtypesKind, c.ns, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+
+	label, _, _ := testing.ExtractFromListOptions(opts)
+	if label == nil {
+		label = labels.Everything()
+	}
+	list := &v1.TestTypeList{ListMeta: obj.(*v1.TestTypeList).ListMeta}
+	for _, item := range obj.(*v1.TestTypeList).Items {
+		if label.Matches(labels.Set(item.Labels)) {
+			list.Items = append(list.Items, item)
+		}
+	}
+	return list, err
+}
+
+// Watch returns a watch.Interface that watches the requested testTypes.
+func (c *FakeTestTypes) Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error) {
+	return c.Fake.
+		InvokesWatch(testing.NewWatchActionWithOptions(testtypesResource, c.ns, opts))
+
+}
+
+// Create takes the representation of a testType and creates it.  Returns the server's representation of the testType, and an error, if there is any.
+func (c *FakeTestTypes) Create(ctx context.Context, testType *v1.TestType, opts metav1.CreateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewCreateActionWithOptions(testtypesResource, c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// Update takes the representation of a testType and updates it. Returns the server's representation of the testType, and an error, if there is any.
+func (c *FakeTestTypes) Update(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewUpdateActionWithOptions(testtypesResource, c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// UpdateStatus was generated because the type contains a Status member.
+// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+func (c *FakeTestTypes) UpdateStatus(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewUpdateSubresourceActionWithOptions(testtypesResource, "status", c.ns, testType, opts), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// Delete takes name of the testType and deletes it. Returns an error if one occurs.
+func (c *FakeTestTypes) Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error {
+	_, err := c.Fake.
+		Invokes(testing.NewDeleteActionWithOptions(testtypesResource, c.ns, name, opts), &v1.TestType{})
+
+	return err
+}
+
+// DeleteCollection deletes a collection of objects.
+func (c *FakeTestTypes) DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error {
+	action := testing.NewDeleteCollectionActionWithOptions(testtypesResource, c.ns, opts, listOpts)
+
+	_, err := c.Fake.Invokes(action, &v1.TestTypeList{})
+	return err
+}
+
+// Patch applies the patch and returns the patched testType.
+func (c *FakeTestTypes) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.TestType, err error) {
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewPatchSubresourceActionWithOptions(testtypesResource, c.ns, name, pt, data, opts, subresources...), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// Apply takes the given apply declarative configuration, applies it and returns the applied testType.
+func (c *FakeTestTypes) Apply(ctx context.Context, testType *apiv1.TestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.TestType, err error) {
+	if testType == nil {
+		return nil, fmt.Errorf("testType provided to Apply must not be nil")
+	}
+	data, err := json.Marshal(testType)
+	if err != nil {
+		return nil, err
+	}
+	name := testType.Name
+	if name == nil {
+		return nil, fmt.Errorf("testType.Name must be provided to Apply")
+	}
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewPatchSubresourceActionWithOptions(testtypesResource, c.ns, *name, types.ApplyPatchType, data, opts.ToPatchOptions()), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}
+
+// ApplyStatus was generated because the type contains a Status member.
+// Add a +genclient:noStatus comment above the type to avoid generating ApplyStatus().
+func (c *FakeTestTypes) ApplyStatus(ctx context.Context, testType *apiv1.TestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.TestType, err error) {
+	if testType == nil {
+		return nil, fmt.Errorf("testType provided to Apply must not be nil")
+	}
+	data, err := json.Marshal(testType)
+	if err != nil {
+		return nil, err
+	}
+	name := testType.Name
+	if name == nil {
+		return nil, fmt.Errorf("testType.Name must be provided to Apply")
+	}
+	emptyResult := &v1.TestType{}
+	obj, err := c.Fake.
+		Invokes(testing.NewPatchSubresourceActionWithOptions(testtypesResource, c.ns, *name, types.ApplyPatchType, data, opts.ToPatchOptions(), "status"), emptyResult)
+
+	if obj == nil {
+		return emptyResult, err
+	}
+	return obj.(*v1.TestType), err
+}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/generated_expansion.go

@@ -0,0 +1,23 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+type ClusterTestTypeExpansion interface{}
+
+type TestTypeExpansion interface{}

staging/src/k8s.io/code-generator/examples/single/clientset/versioned/typed/api/v1/testtype.go

@@ -0,0 +1,73 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by client-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	types "k8s.io/apimachinery/pkg/types"
+	watch "k8s.io/apimachinery/pkg/watch"
+	gentype "k8s.io/client-go/gentype"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+	apiv1 "k8s.io/code-generator/examples/single/applyconfiguration/api/v1"
+	scheme "k8s.io/code-generator/examples/single/clientset/versioned/scheme"
+)
+
+// TestTypesGetter has a method to return a TestTypeInterface.
+// A group's client should implement this interface.
+type TestTypesGetter interface {
+	TestTypes(namespace string) TestTypeInterface
+}
+
+// TestTypeInterface has methods to work with TestType resources.
+type TestTypeInterface interface {
+	Create(ctx context.Context, testType *v1.TestType, opts metav1.CreateOptions) (*v1.TestType, error)
+	Update(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (*v1.TestType, error)
+	// Add a +genclient:noStatus comment above the type to avoid generating UpdateStatus().
+	UpdateStatus(ctx context.Context, testType *v1.TestType, opts metav1.UpdateOptions) (*v1.TestType, error)
+	Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error
+	DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error
+	Get(ctx context.Context, name string, opts metav1.GetOptions) (*v1.TestType, error)
+	List(ctx context.Context, opts metav1.ListOptions) (*v1.TestTypeList, error)
+	Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error)
+	Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (result *v1.TestType, err error)
+	Apply(ctx context.Context, testType *apiv1.TestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.TestType, err error)
+	// Add a +genclient:noStatus comment above the type to avoid generating ApplyStatus().
+	ApplyStatus(ctx context.Context, testType *apiv1.TestTypeApplyConfiguration, opts metav1.ApplyOptions) (result *v1.TestType, err error)
+	TestTypeExpansion
+}
+
+// testTypes implements TestTypeInterface
+type testTypes struct {
+	*gentype.ClientWithListAndApply[*v1.TestType, *v1.TestTypeList, *apiv1.TestTypeApplyConfiguration]
+}
+
+// newTestTypes returns a TestTypes
+func newTestTypes(c *ExampleV1Client, namespace string) *testTypes {
+	return &testTypes{
+		gentype.NewClientWithListAndApply[*v1.TestType, *v1.TestTypeList, *apiv1.TestTypeApplyConfiguration](
+			"testtypes",
+			c.RESTClient(),
+			scheme.ParameterCodec,
+			namespace,
+			func() *v1.TestType { return &v1.TestType{} },
+			func() *v1.TestTypeList { return &v1.TestTypeList{} }),
+	}
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/api/interface.go

@@ -0,0 +1,46 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package api
+
+import (
+	v1 "k8s.io/code-generator/examples/single/informers/externalversions/api/v1"
+	internalinterfaces "k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces"
+)
+
+// Interface provides access to each of this group's versions.
+type Interface interface {
+	// V1 provides access to shared informers for resources in V1.
+	V1() v1.Interface
+}
+
+type group struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &group{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// V1 returns a new v1.Interface.
+func (g *group) V1() v1.Interface {
+	return v1.New(g.factory, g.namespace, g.tweakListOptions)
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/api/v1/clustertesttype.go

@@ -0,0 +1,89 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+	time "time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	cache "k8s.io/client-go/tools/cache"
+	apiv1 "k8s.io/code-generator/examples/single/api/v1"
+	versioned "k8s.io/code-generator/examples/single/clientset/versioned"
+	internalinterfaces "k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces"
+	v1 "k8s.io/code-generator/examples/single/listers/api/v1"
+)
+
+// ClusterTestTypeInformer provides access to a shared informer and lister for
+// ClusterTestTypes.
+type ClusterTestTypeInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() v1.ClusterTestTypeLister
+}
+
+type clusterTestTypeInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// NewClusterTestTypeInformer constructs a new informer for ClusterTestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewClusterTestTypeInformer(client versioned.Interface, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredClusterTestTypeInformer(client, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredClusterTestTypeInformer constructs a new informer for ClusterTestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredClusterTestTypeInformer(client versioned.Interface, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ExampleV1().ClusterTestTypes().List(context.TODO(), options)
+			},
+			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ExampleV1().ClusterTestTypes().Watch(context.TODO(), options)
+			},
+		},
+		&apiv1.ClusterTestType{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *clusterTestTypeInformer) defaultInformer(client versioned.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredClusterTestTypeInformer(client, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *clusterTestTypeInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiv1.ClusterTestType{}, f.defaultInformer)
+}
+
+func (f *clusterTestTypeInformer) Lister() v1.ClusterTestTypeLister {
+	return v1.NewClusterTestTypeLister(f.Informer().GetIndexer())
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/api/v1/interface.go

@@ -0,0 +1,52 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	internalinterfaces "k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// ClusterTestTypes returns a ClusterTestTypeInformer.
+	ClusterTestTypes() ClusterTestTypeInformer
+	// TestTypes returns a TestTypeInformer.
+	TestTypes() TestTypeInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// ClusterTestTypes returns a ClusterTestTypeInformer.
+func (v *version) ClusterTestTypes() ClusterTestTypeInformer {
+	return &clusterTestTypeInformer{factory: v.factory, tweakListOptions: v.tweakListOptions}
+}
+
+// TestTypes returns a TestTypeInformer.
+func (v *version) TestTypes() TestTypeInformer {
+	return &testTypeInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/api/v1/testtype.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"context"
+	time "time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	cache "k8s.io/client-go/tools/cache"
+	apiv1 "k8s.io/code-generator/examples/single/api/v1"
+	versioned "k8s.io/code-generator/examples/single/clientset/versioned"
+	internalinterfaces "k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces"
+	v1 "k8s.io/code-generator/examples/single/listers/api/v1"
+)
+
+// TestTypeInformer provides access to a shared informer and lister for
+// TestTypes.
+type TestTypeInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() v1.TestTypeLister
+}
+
+type testTypeInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewTestTypeInformer constructs a new informer for TestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewTestTypeInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredTestTypeInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredTestTypeInformer constructs a new informer for TestType type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredTestTypeInformer(client versioned.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ExampleV1().TestTypes(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.ExampleV1().TestTypes(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&apiv1.TestType{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *testTypeInformer) defaultInformer(client versioned.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredTestTypeInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *testTypeInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiv1.TestType{}, f.defaultInformer)
+}
+
+func (f *testTypeInformer) Lister() v1.TestTypeLister {
+	return v1.NewTestTypeLister(f.Informer().GetIndexer())
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/factory.go

@@ -0,0 +1,261 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package externalversions
+
+import (
+	reflect "reflect"
+	sync "sync"
+	time "time"
+
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	cache "k8s.io/client-go/tools/cache"
+	versioned "k8s.io/code-generator/examples/single/clientset/versioned"
+	api "k8s.io/code-generator/examples/single/informers/externalversions/api"
+	internalinterfaces "k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces"
+)
+
+// SharedInformerOption defines the functional option type for SharedInformerFactory.
+type SharedInformerOption func(*sharedInformerFactory) *sharedInformerFactory
+
+type sharedInformerFactory struct {
+	client           versioned.Interface
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	lock             sync.Mutex
+	defaultResync    time.Duration
+	customResync     map[reflect.Type]time.Duration
+	transform        cache.TransformFunc
+
+	informers map[reflect.Type]cache.SharedIndexInformer
+	// startedInformers is used for tracking which informers have been started.
+	// This allows Start() to be called multiple times safely.
+	startedInformers map[reflect.Type]bool
+	// wg tracks how many goroutines were started.
+	wg sync.WaitGroup
+	// shuttingDown is true when Shutdown has been called. It may still be running
+	// because it needs to wait for goroutines.
+	shuttingDown bool
+}
+
+// WithCustomResyncConfig sets a custom resync period for the specified informer types.
+func WithCustomResyncConfig(resyncConfig map[v1.Object]time.Duration) SharedInformerOption {
+	return func(factory *sharedInformerFactory) *sharedInformerFactory {
+		for k, v := range resyncConfig {
+			factory.customResync[reflect.TypeOf(k)] = v
+		}
+		return factory
+	}
+}
+
+// WithTweakListOptions sets a custom filter on all listers of the configured SharedInformerFactory.
+func WithTweakListOptions(tweakListOptions internalinterfaces.TweakListOptionsFunc) SharedInformerOption {
+	return func(factory *sharedInformerFactory) *sharedInformerFactory {
+		factory.tweakListOptions = tweakListOptions
+		return factory
+	}
+}
+
+// WithNamespace limits the SharedInformerFactory to the specified namespace.
+func WithNamespace(namespace string) SharedInformerOption {
+	return func(factory *sharedInformerFactory) *sharedInformerFactory {
+		factory.namespace = namespace
+		return factory
+	}
+}
+
+// WithTransform sets a transform on all informers.
+func WithTransform(transform cache.TransformFunc) SharedInformerOption {
+	return func(factory *sharedInformerFactory) *sharedInformerFactory {
+		factory.transform = transform
+		return factory
+	}
+}
+
+// NewSharedInformerFactory constructs a new instance of sharedInformerFactory for all namespaces.
+func NewSharedInformerFactory(client versioned.Interface, defaultResync time.Duration) SharedInformerFactory {
+	return NewSharedInformerFactoryWithOptions(client, defaultResync)
+}
+
+// NewFilteredSharedInformerFactory constructs a new instance of sharedInformerFactory.
+// Listers obtained via this SharedInformerFactory will be subject to the same filters
+// as specified here.
+// Deprecated: Please use NewSharedInformerFactoryWithOptions instead
+func NewFilteredSharedInformerFactory(client versioned.Interface, defaultResync time.Duration, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) SharedInformerFactory {
+	return NewSharedInformerFactoryWithOptions(client, defaultResync, WithNamespace(namespace), WithTweakListOptions(tweakListOptions))
+}
+
+// NewSharedInformerFactoryWithOptions constructs a new instance of a SharedInformerFactory with additional options.
+func NewSharedInformerFactoryWithOptions(client versioned.Interface, defaultResync time.Duration, options ...SharedInformerOption) SharedInformerFactory {
+	factory := &sharedInformerFactory{
+		client:           client,
+		namespace:        v1.NamespaceAll,
+		defaultResync:    defaultResync,
+		informers:        make(map[reflect.Type]cache.SharedIndexInformer),
+		startedInformers: make(map[reflect.Type]bool),
+		customResync:     make(map[reflect.Type]time.Duration),
+	}
+
+	// Apply all options
+	for _, opt := range options {
+		factory = opt(factory)
+	}
+
+	return factory
+}
+
+func (f *sharedInformerFactory) Start(stopCh <-chan struct{}) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if f.shuttingDown {
+		return
+	}
+
+	for informerType, informer := range f.informers {
+		if !f.startedInformers[informerType] {
+			f.wg.Add(1)
+			// We need a new variable in each loop iteration,
+			// otherwise the goroutine would use the loop variable
+			// and that keeps changing.
+			informer := informer
+			go func() {
+				defer f.wg.Done()
+				informer.Run(stopCh)
+			}()
+			f.startedInformers[informerType] = true
+		}
+	}
+}
+
+func (f *sharedInformerFactory) Shutdown() {
+	f.lock.Lock()
+	f.shuttingDown = true
+	f.lock.Unlock()
+
+	// Will return immediately if there is nothing to wait for.
+	f.wg.Wait()
+}
+
+func (f *sharedInformerFactory) WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool {
+	informers := func() map[reflect.Type]cache.SharedIndexInformer {
+		f.lock.Lock()
+		defer f.lock.Unlock()
+
+		informers := map[reflect.Type]cache.SharedIndexInformer{}
+		for informerType, informer := range f.informers {
+			if f.startedInformers[informerType] {
+				informers[informerType] = informer
+			}
+		}
+		return informers
+	}()
+
+	res := map[reflect.Type]bool{}
+	for informType, informer := range informers {
+		res[informType] = cache.WaitForCacheSync(stopCh, informer.HasSynced)
+	}
+	return res
+}
+
+// InformerFor returns the SharedIndexInformer for obj using an internal
+// client.
+func (f *sharedInformerFactory) InformerFor(obj runtime.Object, newFunc internalinterfaces.NewInformerFunc) cache.SharedIndexInformer {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	informerType := reflect.TypeOf(obj)
+	informer, exists := f.informers[informerType]
+	if exists {
+		return informer
+	}
+
+	resyncPeriod, exists := f.customResync[informerType]
+	if !exists {
+		resyncPeriod = f.defaultResync
+	}
+
+	informer = newFunc(f.client, resyncPeriod)
+	informer.SetTransform(f.transform)
+	f.informers[informerType] = informer
+
+	return informer
+}
+
+// SharedInformerFactory provides shared informers for resources in all known
+// API group versions.
+//
+// It is typically used like this:
+//
+//	ctx, cancel := context.Background()
+//	defer cancel()
+//	factory := NewSharedInformerFactory(client, resyncPeriod)
+//	defer factory.WaitForStop()    // Returns immediately if nothing was started.
+//	genericInformer := factory.ForResource(resource)
+//	typedInformer := factory.SomeAPIGroup().V1().SomeType()
+//	factory.Start(ctx.Done())          // Start processing these informers.
+//	synced := factory.WaitForCacheSync(ctx.Done())
+//	for v, ok := range synced {
+//	    if !ok {
+//	        fmt.Fprintf(os.Stderr, "caches failed to sync: %v", v)
+//	        return
+//	    }
+//	}
+//
+//	// Creating informers can also be created after Start, but then
+//	// Start must be called again:
+//	anotherGenericInformer := factory.ForResource(resource)
+//	factory.Start(ctx.Done())
+type SharedInformerFactory interface {
+	internalinterfaces.SharedInformerFactory
+
+	// Start initializes all requested informers. They are handled in goroutines
+	// which run until the stop channel gets closed.
+	Start(stopCh <-chan struct{})
+
+	// Shutdown marks a factory as shutting down. At that point no new
+	// informers can be started anymore and Start will return without
+	// doing anything.
+	//
+	// In addition, Shutdown blocks until all goroutines have terminated. For that
+	// to happen, the close channel(s) that they were started with must be closed,
+	// either before Shutdown gets called or while it is waiting.
+	//
+	// Shutdown may be called multiple times, even concurrently. All such calls will
+	// block until all goroutines have terminated.
+	Shutdown()
+
+	// WaitForCacheSync blocks until all started informers' caches were synced
+	// or the stop channel gets closed.
+	WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool
+
+	// ForResource gives generic access to a shared informer of the matching type.
+	ForResource(resource schema.GroupVersionResource) (GenericInformer, error)
+
+	// InformerFor returns the SharedIndexInformer for obj using an internal
+	// client.
+	InformerFor(obj runtime.Object, newFunc internalinterfaces.NewInformerFunc) cache.SharedIndexInformer
+
+	Example() api.Interface
+}
+
+func (f *sharedInformerFactory) Example() api.Interface {
+	return api.New(f, f.namespace, f.tweakListOptions)
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/generic.go

@@ -0,0 +1,64 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package externalversions
+
+import (
+	"fmt"
+
+	schema "k8s.io/apimachinery/pkg/runtime/schema"
+	cache "k8s.io/client-go/tools/cache"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+)
+
+// GenericInformer is type of SharedIndexInformer which will locate and delegate to other
+// sharedInformers based on type
+type GenericInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() cache.GenericLister
+}
+
+type genericInformer struct {
+	informer cache.SharedIndexInformer
+	resource schema.GroupResource
+}
+
+// Informer returns the SharedIndexInformer.
+func (f *genericInformer) Informer() cache.SharedIndexInformer {
+	return f.informer
+}
+
+// Lister returns the GenericLister.
+func (f *genericInformer) Lister() cache.GenericLister {
+	return cache.NewGenericLister(f.Informer().GetIndexer(), f.resource)
+}
+
+// ForResource gives generic access to a shared informer of the matching type
+// TODO extend this to unknown resources with a client pool
+func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
+	switch resource {
+	// Group=example.crd.code-generator.k8s.io, Version=v1
+	case v1.SchemeGroupVersion.WithResource("clustertesttypes"):
+		return &genericInformer{resource: resource.GroupResource(), informer: f.Example().V1().ClusterTestTypes().Informer()}, nil
+	case v1.SchemeGroupVersion.WithResource("testtypes"):
+		return &genericInformer{resource: resource.GroupResource(), informer: f.Example().V1().TestTypes().Informer()}, nil
+
+	}
+
+	return nil, fmt.Errorf("no informer found for %v", resource)
+}

staging/src/k8s.io/code-generator/examples/single/informers/externalversions/internalinterfaces/factory_interfaces.go

@@ -0,0 +1,40 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package internalinterfaces
+
+import (
+	time "time"
+
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	cache "k8s.io/client-go/tools/cache"
+	versioned "k8s.io/code-generator/examples/single/clientset/versioned"
+)
+
+// NewInformerFunc takes versioned.Interface and time.Duration to return a SharedIndexInformer.
+type NewInformerFunc func(versioned.Interface, time.Duration) cache.SharedIndexInformer
+
+// SharedInformerFactory a small interface to allow for adding an informer without an import cycle
+type SharedInformerFactory interface {
+	Start(stopCh <-chan struct{})
+	InformerFor(obj runtime.Object, newFunc NewInformerFunc) cache.SharedIndexInformer
+}
+
+// TweakListOptionsFunc is a function that transforms a v1.ListOptions.
+type TweakListOptionsFunc func(*v1.ListOptions)

staging/src/k8s.io/code-generator/examples/single/listers/api/v1/clustertesttype.go

@@ -0,0 +1,48 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/client-go/listers"
+	"k8s.io/client-go/tools/cache"
+	v1 "k8s.io/code-generator/examples/single/api/v1"
+)
+
+// ClusterTestTypeLister helps list ClusterTestTypes.
+// All objects returned here must be treated as read-only.
+type ClusterTestTypeLister interface {
+	// List lists all ClusterTestTypes in the indexer.
+	// Objects returned here must be treated as read-only.
+	List(selector labels.Selector) (ret []*v1.ClusterTestType, err error)
+	// Get retrieves the ClusterTestType from the index for a given name.
+	// Objects returned here must be treated as read-only.
+	Get(name string) (*v1.ClusterTestType, error)
+	ClusterTestTypeListerExpansion
+}
+
+// clusterTestTypeLister implements the ClusterTestTypeLister interface.
+type clusterTestTypeLister struct {
+	listers.ResourceIndexer[*v1.ClusterTestType]
+}
+
+// NewClusterTestTypeLister returns a new ClusterTestTypeLister.
+func NewClusterTestTypeLister(indexer cache.Indexer) ClusterTestTypeLister {
+	return &clusterTestTypeLister{listers.New[*v1.ClusterTestType](indexer, v1.Resource("clustertesttype"))}
+}

staging/src/k8s.io/code-generator/examples/single/listers/api/v1/expansion_generated.go

@@ -0,0 +1,31 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by lister-gen. DO NOT EDIT.
+
+package v1
+
+// ClusterTestTypeListerExpansion allows custom methods to be added to
+// ClusterTestTypeLister.
+type ClusterTestTypeListerExpansion interface{}
+
+// TestTypeListerExpansion allows custom methods to be added to
+// TestTypeLister.
+type TestTypeListerExpansion interface{}
+
+// TestTypeNamespaceListerExpansion allows custom methods to be added to
+// TestTypeNamespaceLister.
+type TestTypeNamespaceListerExpansion interface{}