diff --git a/code/extensions/DMSSiteTreeExtension.php b/code/extensions/DMSSiteTreeExtension.php
index a4c53aa..a6f6959 100644
--- a/code/extensions/DMSSiteTreeExtension.php
+++ b/code/extensions/DMSSiteTreeExtension.php
@@ -52,6 +52,19 @@ class DMSSiteTreeExtension extends DataExtension
             ));
     }
 
+    /**
+     * Get a list of document sets for the owner page
+     *
+     * @deprecated 3.0 Use DocumentSets() instead.
+     *
+     * @return ArrayList
+     */
+    public function getDocumentSets()
+    {
+        Deprecation::notice('3.0', 'Use DocumentSets() instead');
+        return $this->owner->hasManyComponent('DocumentSets');
+    }
+
     /**
      * Get a list of all documents from all document sets for the owner page
      *