--- /dev/null
+<?php
+
+namespace Drupal\Core\Entity;
+
+use Drupal\Core\TypedData\TranslatableInterface as TranslatableDataInterface;
+
+/**
+ * Provides methods for an entity to support translation.
+ */
+interface TranslatableInterface extends TranslatableDataInterface {
+
+ /**
+ * Determines if the current translation of the entity has unsaved changes.
+ *
+ * @return bool
+ * TRUE if the current translation of the entity has changes.
+ */
+ public function hasTranslationChanges();
+
+}