* Kubectl: Remove swagger 1.2 validation. Also removes options `--use-openapi` and `--schema-cache-dir` as these are no longer needed. ([#53232](https://github.com/kubernetes/kubernetes/pull/53232), [@apelisse](https://github.com/apelisse))

      - [Cluster federation](#cluster-federation-1)
      - [Credential provider](#credential-provider)
      - [Information for Kubernetes clients (openapi, swagger, client-go)](#information-for-kubernetes-clients-openapi-swagger-client-go)
      - [Instrumentation](#instrumentation-1)
      - [Internal storage layer](#internal-storage-layer)
      - [Kubernetes Dashboard](#kubernetes-dashboard)

  If set to an empty string, caching is disabled.

- Kubectl now performs validation against OpenAPI schema instead of Swagger 1.2. If
  OpenAPI is not available on the server, it falls back to the old Swagger 1.2.

- Added Italian translation for kubectl.

- Added German translation for kubectl.

#### Scheduling

* genericapiserver: turn APIContainer.SecretRoutes into a real ServeMux ([#38826](https://github.com/kubernetes/kubernetes/pull/38826), [@sttts](https://github.com/sttts))
* genericapiserver: unify swagger and openapi in config ([#38690](https://github.com/kubernetes/kubernetes/pull/38690), [@sttts](https://github.com/sttts))

### Client

  is beta but disabled by default. ([#120198](https://github.com/kubernetes/kubernetes/pull/120198), [@pacoxu](https://github.com/pacoxu))
- `kubectl` will not support the `/swagger-2.0.0.pb-v1` endpoint that has been long deprecated. ([#119410](https://github.com/kubernetes/kubernetes/pull/119410), [@Jefftree](https://github.com/Jefftree))

	"fmt"
	"hash"
	"io"
)

// Tagger is the interface that wraps the basic ETag method.
type Tagger interface {
	ETag() ETag
}

type wrapReader struct {
	io.Reader
	Tagger
}

var _ Tagger = wrapReader{} // compiler check

// ETag returns the ETag of the underlying Tagger.
func (r wrapReader) ETag() ETag {
	if r.Tagger == nil {
		return nil
	}
	return r.Tagger.ETag()
}

func (r *Reader) ActualSize() int64 { return r.actualSize }

// ETag returns the ETag computed by an underlying etag.Tagger.
// If the underlying io.Reader does not implement etag.Tagger
// it returns nil.
func (r *Reader) ETag() etag.ETag {
	if t, ok := r.src.(etag.Tagger); ok {
		return t.ETag()
	}
	return nil
}

// MD5Current returns the MD5 checksum of the content

 * automate the process, often adding features like monitoring, debugging, and cancellation.
 * Examples of frameworks include:
 *
 * <ul>
 *   <li><a href="https://dagger.dev/producers.html">Dagger Producers</a>
 * </ul>
 *
 * <p>The main purpose of {@link #addListener addListener} is to support this chaining. You will

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package etag

import (
	"io"
	"net/http"
	"strings"
	"testing"
)

var _ Tagger = Wrap(nil, nil).(Tagger) // runtime check that wrapReader implements Tagger

var parseTests = []struct {
	String     string
	ETag       ETag
	ShouldFail bool
}{

 * automate the process, often adding features like monitoring, debugging, and cancellation.
 * Examples of frameworks include:
 *
 * <ul>
 *   <li><a href="https://dagger.dev/producers.html">Dagger Producers</a>
 * </ul>
 *
 * <p>The main purpose of {@link #addListener addListener} is to support this chaining. You will