--- /dev/null
+<?php
+
+namespace Drupal\Core\Entity\Plugin\EntityReferenceSelection;
+
+/**
+ * @deprecated in Drupal 8.0.0, will be removed before Drupal 9.0.0.
+ * Use \Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection
+ */
+class SelectionBase extends DefaultSelection { }