1 files changed, 7 insertions, 1 deletions
diff --git a/MediaBrowser.Controller/Entities/IHasMetadata.cs b/MediaBrowser.Controller/Entities/IHasMetadata.cs
index 378c4a390..c7a3c7778 100644
--- a/MediaBrowser.Controller/Entities/IHasMetadata.cs
+++ b/MediaBrowser.Controller/Entities/IHasMetadata.cs
@@ -32,7 +32,7 @@ namespace MediaBrowser.Controller.Entities
         /// </summary>
         /// <value>The date last refreshed.</value>
         DateTime DateLastRefreshed { get; set; }
-        
+
         /// <summary>
         /// This is called before any metadata refresh and returns true or false indicating if changes were made
         /// </summary>
@@ -53,5 +53,11 @@ namespace MediaBrowser.Controller.Entities
         bool RequiresRefresh();
 
         bool EnableForceSaveOnDateModifiedChange { get; }
+
+        string PresentationUniqueKey { get; set; }
+
+        string GetPresentationUniqueKey();
+        string CreatePresentationUniqueKey();
+
     }
 }