if err != nil {
		s.writeErrorResponse(w, err)
		return
	}

	if lrTime.Sub(currentReleaseTime) <= 0 {
		s.writeErrorResponse(w, fmt.Errorf("server is running the latest version: %s", Version))
		return
	}

	zr, err := zstd.NewReader(r.Body)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	defer zr.Close()

    return CollectCollectors.toImmutableSortedMap(
        comparator, keyFunction, valueFunction, mergeFunction);
  }

  /*
   * TODO(kevinb): Confirm that ImmutableSortedMap is faster to construct and
   * uses less memory than TreeMap; then say so in the class Javadoc.
   */
  private static final Comparator<?> NATURAL_ORDER = Ordering.natural();

Major features for stateful applications include automated updates to StatefulSets, enhanced updates for DaemonSets, a burst mode for faster StatefulSets scaling, and (alpha) support for local storage.

- External credential provider plugins will now have their standard error output logged by kubelet upon failures. ([#117448](https://github.com/kubernetes/kubernetes/pull/117448), [@cartermckinnon](https://github.com/cartermckinnon))
- Faster scheduling when `ResourceClaims` are involved. ([#119078](https://github.com/kubernetes/kubernetes/pull/119078), [@pohly](https://github.com/pohly))

### Bug or Regression

- Fix missing delete events on informer re-lists to ensure all delete events are correctly emitted and using the latest known object state, so that all event handlers and stores always reflect the actual apiserver state as best as possible ([#115900](https://github.com/kubernetes/kubernetes/pull/115900), [@odinuge](https://github.com/odinuge)) [SIG API Machinery]

    * Custom apiservers built with the latest apiserver library will have the 100MB limit on the body of resource requests as well. The limit can be altered via ServerRunOptions.MaxRequestBodyBytes.

    Engine.

 *  **OkHttp now does cookies.** We've replaced `java.net.CookieHandler` with
    a new interface, `CookieJar` and added our own `Cookie` model class. This
    new cookie follows the latest RFC and supports the same cookie attributes
    as modern web browsers.

 *  **Form and Multipart bodies are now modeled.** We've replaced the opaque
    `FormEncodingBuilder` with the more powerful `FormBody` and

## Changelog since v1.5.7

### Other notable changes

* Update dnsmasq to the latest version. ([#53149](https://github.com/kubernetes/kubernetes/pull/53149), [@bowei](https://github.com/bowei))

      * The standard `bridge` plugin have been validated to interoperate with
         the new CRI + CNI code path.
      * If you are using plugins other than `bridge`, make sure you have
        updated custom plugins to the latest version that is compatible.
* **CNI plugins now affect node readiness**
  * Kubelet will now block node readiness until a CNI configuration file is
    present in `/etc/cni/net.d` or a given custom CNI configuration path.

- Pod status updates faster when reacting on probe results. The first readiness probe will be called faster when startup probes succeeded, which will make Pod status as ready faster. ([#98376](https://github.com/kubernetes/kubernetes/pull/98376), [@matthyx](https://github.com/matthyx))