diff --git a/core/lib/Drupal/Core/Entity/EntityReferenceSelection/BasicSelectionPluginBase.php b/core/lib/Drupal/Core/Entity/EntityReferenceSelection/BasicSelectionPluginBase.php
index a0ce0e0..0fc0f30 100644
--- a/core/lib/Drupal/Core/Entity/EntityReferenceSelection/BasicSelectionPluginBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityReferenceSelection/BasicSelectionPluginBase.php
@@ -10,6 +10,9 @@
 
 /**
  * Provides a base class for core selection handlers.
+ *
+ * This base class extends the base selection plugin by providing a list of
+ * helpful services by default.
  */
 abstract class BasicSelectionPluginBase extends SelectionPluginBase implements ContainerFactoryPluginInterface {