Popsu-coloque/web/core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/SelectionBase.php

<?php

namespace Drupal\Core\Entity\Plugin\EntityReferenceSelection;

/**
 * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
 *   Use \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection
 */
class SelectionBase extends DefaultSelection {}