import org.jspecify.annotations.Nullable;

/**
 * Provides static methods acting on or generating a {@code Multimap}.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#multimaps">{@code
 * Multimaps}</a>.
 *
 * @author Jared Levy
 * @author Robert Konigsberg
 * @author Mike Bostock
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible

by automatic tools such as integrated development environments.
</p>

<h2 id="Notation">Notation</h2>
<p>
The syntax is specified using a
<a href="https://en.wikipedia.org/wiki/Wirth_syntax_notation">variant</a>
of Extended Backus-Naur Form (EBNF):
</p>

<pre class="grammar">
Syntax      = { Production } .
Production  = production_name "=" [ Expression ] "." .

[Moving container registry from k8s.gcr.io to registry.k8s.io](https://github.com/kubernetes/kubernetes/pull/109938) got merged. For more details, see the [wiki page](https://github.com/kubernetes/k8s.io/wiki/New-Registry-url-for-Kubernetes-\(registry.k8s.io\)), [announcement](https://groups.google.com/a/kubernetes.io/g/dev/c/DYZYNQ_A6_c/m/oD9_Q8Q9AAAJ) was sent to the kubernetes development mailing list.

- Introduce support for CEL optionals (see [CEL spec proposal 246](https://github.com/google/cel-spec/wiki/proposal-246)).
  This feature will not be fully enabled until a future Kubernetes release (likely to be v1.29), but is added in v1.28 to enable

u0007durumis\ndyn-o-saur\u0008dynalias\u000edyndns-at-home\u000edyndns-at-work\u000bdyndns-blog\u000bdyndns-free\u000bdyndns-home\u0009dyndns-ip\u000bdyndns-mail\rdyndns-office\u000bdyndns-pics\rdyndns-remote\rdyndns-server\ndyndns-web\u000bdyndns-wiki\u000bdyndns-work\u0005dynns\u0008dynuddns\u000bdynuhosting\u0010elasticbeanstalk\remergentagent\u0009encoreapi\u000fest-a-la-maison\u000fest-a-la-masion\rest-le-patron\u0010est-mon-blogueur\neu1-plenit\u0008evennode\u0008familyds\u000bfastly-edge\...

Vig, Sebastian Raschka, Sebastian Weiss, Sergey Kolesnikov, Sergii Khomenko,
Shahid, Shivam Kotwalia, Stuart Berg, Sumit Gouthaman, superzerg, Sven Mayer,
tetris, Ti Zhou, Tiago Freitas Pereira, Tian Jin, Tomoaki Oiki, Vaibhav Sood,
vfdev, Vivek Rane, Vladimir Moskva, wangqr, Weber Xie, Will Frey, Yan Facai
(颜发才), yanivbl6, Yaroslav Bulatov, Yixing Lao, Yong Tang, youkaichao, Yuan
(Terry) Tang, Yue Zhang, Yuxin Wu, Ziming Dong, ZxYuan, 黄璞

* 🔒 Check Content-Type request header before assuming JSON. Initial PR [#2118](https://github.com/tiangolo/fastapi/pull/2118) by [@patrickkwang](https://github.com/patrickkwang).

This change fixes a [CSRF](https://en.wikipedia.org/wiki/Cross-site_request_forgery) security vulnerability when using cookies for authentication in path operations with JSON payloads sent by browsers.