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    <h3>Editing: AddRequestFormatsListener.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel\EventListener;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * Adds configured formats to each request.
 *
 * @author Gildas Quemener &lt;gildas.quemener@gmail.com&gt;
 *
 * @final
 */
class AddRequestFormatsListener implements EventSubscriberInterface
{
    private array $formats;

    public function __construct(array $formats)
    {
        $this-&gt;formats = $formats;
    }

    /**
     * Adds request formats.
     */
    public function onKernelRequest(RequestEvent $event)
    {
        $request = $event-&gt;getRequest();
        foreach ($this-&gt;formats as $format =&gt; $mimeTypes) {
            $request-&gt;setFormat($format, $mimeTypes);
        }
    }

    public static function getSubscribedEvents(): array
    {
        return [KernelEvents::REQUEST =&gt; ['onKernelRequest', 100]];
    }
}
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