eca-1.0.x-dev/modules/development/templates/events/event.twig

{{ php_prefix|raw }}

namespace Drupal\{{ machine_name }}\Event;

use Symfony\Contracts\EventDispatcher\Event;

/**
 * Provides an event for {{ machine_name }}.
 *
 * @package Drupal\{{ machine_name }}\Event
 */
class MyEvent extends Event {

}