argument are substituted with the respective type arguments for those type
parameters until each type argument is free of bound type parameters.
</p>

<p>
If type arguments contain cyclic references to themselves
through bound type parameters, simplification and thus type
inference fails.
Otherwise, type inference succeeds.
</p>

<h4 id="Type_unification">Type unification</h4>

<p>

- [`KT-37000`](https://youtrack.jetbrains.com/issue/KT-37000) IndexOutOfBoundsException from TypeResolver on typealias with cyclic references
- [`KT-56988`](https://youtrack.jetbrains.com/issue/KT-56988) CFG, smart casts: red in K1 -> green in K2 for invalid code

* Fix a race condition in the scheduler preemption logic that could cause nominatedNodeName of a pod not to be considered in one or more scheduling cycles. ([#72259](https://github.com/kubernetes/kubernetes/pull/72259), [@bsalamat](https://github.com/bsalamat))

* Fix a race condition in the scheduler preemption logic that could cause nominatedNodeName of a pod not to be considered in one or more scheduling cycles. ([#72504](https://github.com/kubernetes/kubernetes/pull/72504), [@bsalamat](https://github.com/bsalamat))

- Remove support for the Service `topologyKeys` field (alpha) and the `kube-proxy` implementation of it. This field was deprecated several cycles ago. This functionality is replaced by the combination of automatic topology hints per-endpoint (alpha) and the Service `internalTrafficPolicy` field (alpha). ([#102412](https://github.com/kubernetes/kubernetes/pull/102412), [@andrewsykim](https:...

* Fix a race condition in the scheduler preemption logic that could cause nominatedNodeName of a pod not to be considered in one or more scheduling cycles. ([#72259](https://github.com/kubernetes/kubernetes/pull/72259), [@bsalamat](https://github.com/bsalamat))

- Scheduler framework permit plugins now run at the end of the scheduling cycle, after reserve plugins. Waiting on permit will remain in the beginning of the binding cycle. ([#88199](https://github.com/kubernetes/kubernetes/pull/88199), [@mateuszlitwin](https://github.com/mateuszlitwin)) [SIG Scheduling]

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

### Extensibility around core Kubernetes APIs

#### CustomResourceDefinitions Pruning

- Scheduler now waits for handlers to finish syncing before the scheduling cycles start. ([#116729](https://github.com/kubernetes/kubernetes/pull/116729), [@AxeZhan](https://github.com/AxeZhan))

    * request a client certificate from the API server during the boot cycle and pause

    * waiting for the request to be satisfied. It will continually refresh the certificate