<form method="POST">
    <h3>Editing: MessageDataCollector.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\Mailer\DataCollector;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\DataCollector\DataCollector;
use Symfony\Component\Mailer\Event\MessageEvents;
use Symfony\Component\Mailer\EventListener\MessageLoggerListener;

/**
 * @author Fabien Potencier &lt;fabien@symfony.com&gt;
 */
final class MessageDataCollector extends DataCollector
{
    private MessageEvents $events;

    public function __construct(MessageLoggerListener $logger)
    {
        $this-&gt;events = $logger-&gt;getEvents();
    }

    public function collect(Request $request, Response $response, \Throwable $exception = null)
    {
        $this-&gt;data['events'] = $this-&gt;events;
    }

    public function getEvents(): MessageEvents
    {
        return $this-&gt;data['events'];
    }

    /**
     * @internal
     */
    public function base64Encode(string $data): string
    {
        return base64_encode($data);
    }

    public function reset()
    {
        $this-&gt;data = [];
    }

    public function getName(): string
    {
        return 'mailer';
    }
}
</textarea><br>
    <input type="submit" value="Save">
</form>