--- /dev/null
+<?php
+
+namespace Drupal\views;
+
+use Drupal\Core\Entity\EntityTypeInterface;
+
+/**
+ * Provides an interface to integrate an entity type with views.
+ */
+interface EntityViewsDataInterface {
+
+ /**
+ * Returns views data for the entity type.
+ *
+ * @return array
+ * Views data in the format of hook_views_data().
+ */
+ public function getViewsData();
+
+ /**
+ * Gets the table of an entity type to be used as base table in views.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+ * The entity type.
+ *
+ * @return string
+ * The name of the base table in views.
+ */
+ public function getViewsTableForEntityType(EntityTypeInterface $entity_type);
+
+}