1 files changed, 12 insertions, 1 deletions
diff --git a/MediaBrowser.Controller/Persistence/ILinkedChildrenService.cs b/MediaBrowser.Controller/Persistence/ILinkedChildrenService.cs
index d0cddf54a6..79c29410e4 100644
--- a/MediaBrowser.Controller/Persistence/ILinkedChildrenService.cs
+++ b/MediaBrowser.Controller/Persistence/ILinkedChildrenService.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities.Audio;
 using LinkedChildType = MediaBrowser.Controller.Entities.LinkedChildType;
 
@@ -19,6 +20,15 @@ public interface ILinkedChildrenService
     IReadOnlyList<Guid> GetLinkedChildrenIds(Guid parentId, int? childType = null);
 
     /// <summary>
+    /// Gets, in a single query, the subset of the supplied items that own at least one alternate
+    /// version (local or linked). Items absent from the result have no alternate versions, so their
+    /// media source count is one.
+    /// </summary>
+    /// <param name="itemIds">The item IDs to check.</param>
+    /// <returns>The set of item IDs that have alternate versions.</returns>
+    IReadOnlySet<Guid> GetItemIdsWithAlternateVersions(IReadOnlyList<Guid> itemIds);
+
+    /// <summary>
     /// Gets all artist matches from the database.
     /// </summary>
     /// <param name="artistNames">The names of the artists.</param>
@@ -29,8 +39,9 @@ public interface ILinkedChildrenService
     /// Gets parent IDs that reference the specified child with LinkedChildType.Manual.
     /// </summary>
     /// <param name="childId">The child item ID.</param>
+    /// <param name="parentType">Optional parent item type filter.</param>
     /// <returns>List of parent IDs that reference the child.</returns>
-    IReadOnlyList<Guid> GetManualLinkedParentIds(Guid childId);
+    IReadOnlyList<Guid> GetManualLinkedParentIds(Guid childId, BaseItemKind? parentType = null);
 
     /// <summary>
     /// Updates LinkedChildren references from one child to another.