- Fixed OpenAPI v3 not being cleaned up after deleting `APIServices`. ([#120108](https://github.com/kubernetes/kubernetes/pull/120108), [@tnqn](https://github.com/tnqn))

- Introduce api-extensions category which will return: mutating admission configs, validating admission configs, CRDs and APIServices when used in kubectl get, for example. ([#95603](https://github.com/kubernetes/kubernetes/pull/95603), [@soltysh](https://github.com/soltysh)) [SIG API Machinery]

- OpenAPI V2 will no longer publish aggregated API server OpenAPI for group versions that do not match the APIService specified group version. ([#123570](https://github.com/kubernetes/kubernetes/pull/123570), [@Jefftree](https://github.com/Jefftree))

			}
		})
	}
}

type fakeAPIServiceRegistration struct {
	added   []*apiregistration.APIService
	removed []string
}

func (a *fakeAPIServiceRegistration) AddAPIServiceToSync(in *apiregistration.APIService) {
	a.added = append(a.added, in)
}
func (a *fakeAPIServiceRegistration) RemoveAPIServiceToSync(name string) {
	a.removed = append(a.removed, name)

}

func newBaseServiceInfo(service *v1.Service, ipFamily v1.IPFamily, port *v1.ServicePort) *BaseServicePortInfo {
	externalPolicyLocal := apiservice.ExternalPolicyLocal(service)
	internalPolicyLocal := apiservice.InternalPolicyLocal(service)

	var stickyMaxAgeSeconds int
	if service.Spec.SessionAffinity == v1.ServiceAffinityClientIP {

- Fixed a bug where aggregator_unavailable_apiservice metrics were reported for deleted apiservices. ([#96421](https://github.com/kubernetes/kubernetes/pull/96421), [@dgrisonnet](https://github.com/dgrisonnet)) [SIG API Machinery and Instrumentation]

* The garbage collector now supports CustomResourceDefinitions and APIServices. ([#65918](https://github.com/kubernetes/kubernetes/pull/65918), [@nikhita](https://github.com/nikhita))

	// APIs may return other objects types at their discretion, such as error conditions, requests for alternate representations, or other operation specific behavior.
	// This value will be null or empty if an APIService reports subresources but supports no operations on the parent resource
	ResponseKind *v1.GroupVersionKind `json:"responseKind,omitempty" protobuf:"bytes,2,opt,name=responseKind"`

      priorityClassName: system-cluster-critical
      serviceAccountName: metrics-server
      volumes:
      - emptyDir: {}
        name: tmp-dir
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
  labels:
    k8s-app: metrics-server
  name: v1beta1.metrics.k8s.io
spec:
  group: metrics.k8s.io
  groupPriorityMinimum: 100
  insecureSkipTLSVerify: true
  service:

	// APIs may return other objects types at their discretion, such as error conditions, requests for alternate representations, or other operation specific behavior.
	// This value will be null or empty if an APIService reports subresources but supports no operations on the parent resource
	ResponseKind *v1.GroupVersionKind
	// scope indicates the scope of a resource, either Cluster or Namespaced
	Scope ResourceScope