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diff --git a/web/core/lib/Drupal/Core/Entity/RevisionableInterface.php b/web/core/lib/Drupal/Core/Entity/RevisionableInterface.php
index 14690e3c5..0fc6db2fe 100644
--- a/web/core/lib/Drupal/Core/Entity/RevisionableInterface.php
+++ b/web/core/lib/Drupal/Core/Entity/RevisionableInterface.php
@@ -51,6 +51,22 @@ interface RevisionableInterface {
    */
   public function isDefaultRevision($new_value = NULL);
 
+  /**
+   * Checks whether the entity object was a default revision when it was saved.
+   *
+   * @return bool
+   *   TRUE if the entity object was a revision, FALSE otherwise.
+   */
+  public function wasDefaultRevision();
+
+  /**
+   * Checks if this entity is the latest revision.
+   *
+   * @return bool
+   *   TRUE if the entity is the latest revision, FALSE otherwise.
+   */
+  public function isLatestRevision();
+
   /**
    * Acts on a revision before it gets saved.
    *