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    <h3>Editing: SessionValueResolver.php</h3>
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/*
 * 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\Controller\ArgumentResolver;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;

/**
 * Yields the Session.
 *
 * @author Iltar van der Berg &lt;kjarli@gmail.com&gt;
 */
final class SessionValueResolver implements ArgumentValueResolverInterface
{
    /**
     * {@inheritdoc}
     */
    public function supports(Request $request, ArgumentMetadata $argument): bool
    {
        if (!$request-&gt;hasSession()) {
            return false;
        }

        $type = $argument-&gt;getType();
        if (SessionInterface::class !== $type &amp;&amp; !is_subclass_of($type, SessionInterface::class)) {
            return false;
        }

        return $request-&gt;getSession() instanceof $type;
    }

    /**
     * {@inheritdoc}
     */
    public function resolve(Request $request, ArgumentMetadata $argument): iterable
    {
        yield $request-&gt;getSession();
    }
}
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