--- /dev/null
+<?php
+
+namespace Drupal\Core\Entity;
+
+use Drupal\Core\Plugin\ObjectWithPluginCollectionInterface;
+
+/**
+ * Provides an interface for an object using a plugin collection.
+ *
+ * @see \Drupal\Component\Plugin\LazyPluginCollection
+ *
+ * @ingroup plugin_api
+ */
+interface EntityWithPluginCollectionInterface extends EntityInterface, ObjectWithPluginCollectionInterface {
+
+}