</ol>

<p>
Blocks nest and influence <a href="#Declarations_and_scope">scoping</a>.
</p>


<h2 id="Declarations_and_scope">Declarations and scope</h2>

<p>
A <i>declaration</i> binds a non-<a href="#Blank_identifier">blank</a> identifier to a
<a href="#Constant_declarations">constant</a>,
<a href="#Type_declarations">type</a>,
<a href="#Type_parameter_declarations">type parameter</a>,

### Native. C and ObjC Import

- [`KT-59642`](https://youtrack.jetbrains.com/issue/KT-59642) Remove ability to import forward declaration by library package name
- [`KT-59643`](https://youtrack.jetbrains.com/issue/KT-59643) K2: Disable merging of forward declaration with real declaration class
- [`KT-52882`](https://youtrack.jetbrains.com/issue/KT-52882) MPP / Native: expect/actual mechanism broken when base contract is NSObjectProtocol

    * Add support for type annotations using `Optional` as in `param: Optional[str] = None`. New documentation: [Optional type declarations](https://fastapi.tiangolo.com/tutorial/query-params/#optional-type-declarations).
    * PR [#278](https://github.com/tiangolo/fastapi/pull/278).

## 0.26.0

* Separate error handling for validation errors.

- Non-graceful node shutdown handling is enabled for stateful workload failovers ([#108486](https://github.com/kubernetes/kubernetes/pull/108486), [@sonasingh46](https://github.com/sonasingh46))