EntityReference.php

<?php

namespace Drupal\entity_reference\Plugin\views\display;

use Drupal\views\Plugin\views\display\EntityReference as ViewsEntityReference;

/**
 * Deprecated. The plugin that handles an EntityReference display.
 *
 * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use
 *   \Drupal\views\Plugin\views\display\EntityReference instead.
 *
 * @see \Drupal\views\Plugin\views\display\EntityReference
 */
class EntityReference extends ViewsEntityReference {

}