deleteAssignedShortcutSets example

    }
  }

  /** * {@inheritdoc} */
  public static function preDelete(EntityStorageInterface $storage, array $entities) {
    parent::preDelete($storage, $entities);

    foreach ($entities as $entity) {
      $storage->deleteAssignedShortcutSets($entity);

      // Next, delete the shortcuts for this set.       $shortcut_ids = \Drupal::entityQuery('shortcut')
        ->accessCheck(FALSE)
        ->condition('shortcut_set', $entity->id(), '=')
        ->execute();

      $controller = \Drupal::entityTypeManager()->getStorage('shortcut');
      $entities = $controller->loadMultiple($shortcut_ids);
      $controller->delete($entities);
    }
  }