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    <h3>Editing: Event.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\Contracts\EventDispatcher;

use Psr\EventDispatcher\StoppableEventInterface;

/**
 * Event is the base class for classes containing event data.
 *
 * This class contains no event data. It is used by events that do not pass
 * state information to an event handler when an event is raised.
 *
 * You can call the method stopPropagation() to abort the execution of
 * further listeners in your event listener.
 *
 * @author Guilherme Blanco &lt;guilhermeblanco@hotmail.com&gt;
 * @author Jonathan Wage &lt;jonwage@gmail.com&gt;
 * @author Roman Borschel &lt;roman@code-factory.org&gt;
 * @author Bernhard Schussek &lt;bschussek@gmail.com&gt;
 * @author Nicolas Grekas &lt;p@tchwork.com&gt;
 */
class Event implements StoppableEventInterface
{
    private $propagationStopped = false;

    /**
     * {@inheritdoc}
     */
    public function isPropagationStopped(): bool
    {
        return $this-&gt;propagationStopped;
    }

    /**
     * Stops the propagation of the event to further event listeners.
     *
     * If multiple event listeners are connected to the same event, no
     * further event listener will be triggered once any trigger calls
     * stopPropagation().
     */
    public function stopPropagation(): void
    {
        $this-&gt;propagationStopped = true;
    }
}
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