corresponding type parameters have corresponding constraints.
</p>

<pre>
type Pair[A, B any] struct {
	a A
	b B
}

func (p Pair[A, B]) Swap() Pair[B, A]  { … }  // receiver declares A, B
func (p Pair[First, _]) First() First  { … }  // receiver declares First, corresponds to A in Pair
</pre>

<p>

// https://www.iana.org/domains/root/db/guitars.html
guitars

// guru : Binky Moon, LLC
// https://www.iana.org/domains/root/db/guru.html
guru

// hair : XYZ.COM LLC
// https://www.iana.org/domains/root/db/hair.html
hair

// hamburg : Hamburg Top-Level-Domain GmbH
// https://www.iana.org/domains/root/db/hamburg.html
hamburg

// hangout : Charleston Road Registry Inc.

- Improved CRI handling
  - crictl is no longer required in docker-only setups.
  - Better detection of installed CRI.
  - Better output for image pull errors.
- Improved air-gapped and offline support
  - kubeadm now handles air-gapped environments by using the local client version as a fallback.
  - Some kubeadm commands are now allowed to work in a completely offline mode.
- Certificate handling improvements:

because it frontends equivalent mirrors in other clouds.  Please point your clusters to the new registry going forward. \n\nAdmission/Policy integrations that have an allowlist of registries need to include `registry.k8s.io` alongside `k8s.gcr.io`.\nAir-gapped environments and image garbage-collection configurations will need to update to pre-pull and preserve required images under `registry.k8s.io` as well as `k8s.gcr.io`. ([#109938](https://github.com/kubernetes/kubernetes/pull/109938), [@dims]...

    - `apiserver_flowcontrol_demand_seats_smoothed`: Smoothed seat demands
    - `apiserver_flowcontrol_target_seats`: Seat allocation targets
    - `apiserver_flowcontrol_seat_fair_frac`: Fair fraction of server's concurrency to allocate to each priority level that can use it
    - `apiserver_flowcontrol_current_limit_seats`: current derived number of execution seats available to each priority level

## Changelog since v1.11.0-alpha.1

### Other notable changes

* `kubeadm upgrade plan` now accepts a version which improves the UX nicer in air-gapped environments. ([#63201](https://github.com/kubernetes/kubernetes/pull/63201), [@chuckha](https://github.com/chuckha))