public ImmutableSortedMap<K, V> descendingMap() {
    // TODO(kevinb): The descendingMap is never actually cached at all. Either:
    //
    // - Cache it, and annotate the field with @LazyInit.
    // - Simplify the code below, and consider eliminating the field (b/287198172), which is also
    //   set by one of the constructors.
    ImmutableSortedMap<K, V> result = descendingMap;
    if (result == null) {

  - [alpha] Introducing `kubefed`, a new command line tool to simplify federation control plane. ([docs](http://kubernetes.io/docs/admin/federation/kubefed/)) ([kubernetes/features#97](https://github.com/kubernetes/enhancements/issues/97))
- **Network**

  }

  // Inner Classes

  /**
   * Segments are specialized versions of hash tables. This subclass inherits from ReentrantLock
   * opportunistically, just to simplify some locking and avoid separate construction.
   */
  @SuppressWarnings("serial") // This class is never serialized.
  abstract static class Segment<

  }

  // Inner Classes

  /**
   * Segments are specialized versions of hash tables. This subclass inherits from ReentrantLock
   * opportunistically, just to simplify some locking and avoid separate construction.
   */
  @SuppressWarnings("serial") // This class is never serialized.
  abstract static class Segment<

  }

  // Inner Classes

  /**
   * Segments are specialized versions of hash tables. This subclass inherits from ReentrantLock
   * opportunistically, just to simplify some locking and avoid separate construction.
   */
  @SuppressWarnings("serial") // This class is never serialized.
  static class Segment<K, V> extends ReentrantLock {

    /*

* Filter duplicate network packets in promiscuous bridge mode (with ebtables) ([#28717](https://github.com/kubernetes/kubernetes/pull/28717), [@freehan](https://github.com/freehan))
* Refactor to simplify the hard-traveled path of the KubeletConfiguration object ([#29216](https://github.com/kubernetes/kubernetes/pull/29216), [@mtaufen](https://github.com/mtaufen))

* `federation/deploy/deploy.sh` was an interim solution introduced in Kubernetes v1.4 to simplify the federation control plane deployment experience. Now that we have `kubefed`, we are deprecating `deploy.sh` scripts. ([#38902](https://github.com/kubernetes/kubernetes/pull/38902), [@madhusudancs](https://github.com/madhusudancs))

- Exposed the `apiserver_watch_cache_resource_version` metric to simplify debugging problems with watchcache. ([#125377](https://github.com/kubernetes/kubernetes/pull/125377), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Instrumentation]

- Windows worker nodes in a Kubernetes cluster now support Windows Server version 1903 in addition to the existing support for Windows Server 2019
- The RuntimeClass scheduler can now simplify steering Linux or Windows pods to appropriate nodes

Maintainers of FlexVolume drivers should implement a CSI driver and move users of FlexVolume to CSI.
Users of FlexVolume should move their workloads to CSI driver.

### Deprecation of klog specific flags

To simplify the code base, several [logging flags got marked as deprecated](https://kubernetes.io/docs/concepts/cluster-administration/system-logs/#klog) in Kubernetes 1.23.