hook_event_dispatcher-8.x-2.04/modules/core_event_dispatcher/src/Event/Form/FormAlterEvent.php

<?php

namespace Drupal\core_event_dispatcher\Event\Form;

use Drupal\core_event_dispatcher\FormHookEvents;
use Drupal\hook_event_dispatcher\Attribute\HookEvent;

/**
 * Class FormAlterEvent.
 */
#[HookEvent(id: 'form_alter', alter: 'form')]
class FormAlterEvent extends AbstractFormEvent {

  /**
   * {@inheritdoc}
   */
  public function getDispatcherType(): string {
    return FormHookEvents::FORM_ALTER;
  }

}