diff --git a/BasicNodes/Tests/_LocalFileService.cs b/BasicNodes/Tests/_LocalFileService.cs
index 4ecd8d18..75685996 100644
--- a/BasicNodes/Tests/_LocalFileService.cs
+++ b/BasicNodes/Tests/_LocalFileService.cs
@@ -140,6 +140,16 @@ public class LocalFileService : IFileService
         }
     }
 
+    public Result<DateTime> DirectoryCreationTimeUtc(string path)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Result<DateTime> DirectoryLastWriteTimeUtc(string path)
+    {
+        throw new NotImplementedException();
+    }
+
     public Result<bool> FileExists(string path)
     {
         if (IsProtectedPath(ref path))
diff --git a/BasicNodes/Tests/_TestFileService.cs b/BasicNodes/Tests/_TestFileService.cs
index b0f21d9b..4d79603f 100644
--- a/BasicNodes/Tests/_TestFileService.cs
+++ b/BasicNodes/Tests/_TestFileService.cs
@@ -45,6 +45,16 @@ public class TestFileService : IFileService
         throw new NotImplementedException();
     }
 
+    public Result<DateTime> DirectoryCreationTimeUtc(string path)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Result<DateTime> DirectoryLastWriteTimeUtc(string path)
+    {
+        throw new NotImplementedException();
+    }
+
     public Result<bool> FileExists(string path)
     {
         throw new NotImplementedException();