Updated Plugin Mechanism for kubectl is Graduating to Stable ([#579](https://github.com/kubernetes/enhancements/issues/579))

- Extends functionality to kubectl to support extensions adding new commands as well as overriding specific subcommands (at any depth).
- Documentation fixes

  public static <E extends @Nullable Object> CopyOnWriteArraySet<E> newCopyOnWriteArraySet(
      Iterable<? extends E> elements) {
    // We copy elements to an ArrayList first, rather than incurring the
    // quadratic cost of adding them to the COWAS directly.
    Collection<? extends E> elementsCollection =
        (elements instanceof Collection)
            ? (Collection<? extends E>) elements
            : Lists.newArrayList(elements);

### Bug or Regression

- Avoid GCE API calls when initializing GCE CloudProvider for Kubelets.
  Avoid unnecessary GCE API calls when adding IP alises or reflecting them in Node object in GCE cloud provider. ([#96863](https://github.com/kubernetes/kubernetes/pull/96863), [@tosi3k](https://github.com/tosi3k)) [SIG Apps, Cloud Provider and Network]

          latch.countDown()
        }
      },
    )
    latch.await()
    // There's some flakiness when triggering a GC for objects in a separate thread. Adding a
    // small delay appears to ensure the objects will get GC'd.
    Thread.sleep(200)
    awaitGarbageCollection()
    val message = testLogHandler.take()
    assertThat(message).contains(

then they're a kind of serpent, that's all I can say.'

  This was such a new idea to Alice, that she was quite silent
for a minute or two, which gave the Pigeon the opportunity of
adding, `You're looking for eggs, I know THAT well enough; and
what does it matter to me whether you're a little girl or a
serpent?'

  `It matters a good deal to ME,' said Alice hastily; `but I'm

Troubleshoot workloads that crash on startup by creating a copy of the pod that uses a different container image or command.
Troubleshoot distroless containers by adding a new container with debugging tools, either in a new copy of the pod or using an ephemeral container. (Ephemeral containers are an alpha feature that are not enabled by default.)

    - kubeadm: implemented CRI detection for Windows worker nodes ([#78053](https://github.com/kubernetes/kubernetes/pull/78053), [@ksubrmnn](https://github.com/ksubrmnn))
- Worked toward support for Windows Server version 1903, including adding Windows support for preserving the destination IP as the VIP when loadbalancing with DSR. ([#74825](https://github.com/kubernetes/kubernetes/pull/74825), [@ksubrmnn](https://github.com/ksubrmnn))

'fade'\nconst CLASS_NAME_SHOW = 'show'\nconst EVENT_MOUSEDOWN = `mousedown.bs.${NAME}`\n\nconst Default = {\n  className: 'modal-backdrop',\n  clickCallback: null,\n  isAnimated: false,\n  isVisible: true, // if false, we use the backdrop helper without adding any element to the dom\n  rootElement: 'body' // give the choice to place backdrop under different elements\n}\n\nconst DefaultType = {\n  className: 'string',\n  clickCallback: '(function|null)',\n  isAnimated: 'boolean',\n  isVisible: 'boolean',\n...

\"em\" {\n  $rfs-breakpoint: divide($rfs-breakpoint, divide($rfs-breakpoint * 0 + 1, $rfs-rem-value));\n}\n\n// Internal mixin that adds disable classes to the selector if needed.\n@mixin _rfs-disable-class {\n  @if $rfs-class == \"disable\" {\n    // Adding an extra class increases specificity, which prevents the media query to override the font size\n    &,\n    .disable-responsive-font-size &,\n    &.disable-responsive-font-size {\n      @content;\n    }\n  }\n  @else {\n    @content;\n  }\n}\n\n//...

then they're a kind of serpent, that's all I can say.'

  This was such a new idea to Alice, that she was quite silent
for a minute or two, which gave the Pigeon the opportunity of
adding, `You're looking for eggs, I know THAT well enough; and
what does it matter to me whether you're a little girl or a
serpent?'

  `It matters a good deal to ME,' said Alice hastily; `but I'm