From f8fca30e3d0bccc1fb8bcd1610214c60c2c0799f Mon Sep 17 00:00:00 2001
From: Sam Harwell <Sam.Harwell@microsoft.com>
Date: Fri, 31 Jul 2020 13:54:54 -0700
Subject: [PATCH] Document ignored cancellation token

---
 src/VisualStudio/Core/Impl/CodeModel/FileCodeModel.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/VisualStudio/Core/Impl/CodeModel/FileCodeModel.cs b/src/VisualStudio/Core/Impl/CodeModel/FileCodeModel.cs
index af3058e37ec..11ae6d76496 100644
--- a/src/VisualStudio/Core/Impl/CodeModel/FileCodeModel.cs
+++ b/src/VisualStudio/Core/Impl/CodeModel/FileCodeModel.cs
@@ -123,7 +123,14 @@ internal override void Shutdown()
                 // We don't want to block up file removal on the UI thread since we want that path to stay asynchronous.
                 CodeModelService.DetachFormatTrackingToBuffer(_invisibleEditor.TextBuffer);
 
-                State.ProjectCodeModelFactory.ScheduleDeferredCleanupTask(cancellationToken => { _invisibleEditor.Dispose(); });
+                State.ProjectCodeModelFactory.ScheduleDeferredCleanupTask(
+                    cancellationToken =>
+                    {
+                        // Ignore cancellationToken: we always need to call Dispose since it triggers the file save.
+                        _ = cancellationToken;
+
+                        _invisibleEditor.Dispose();
+                    });
             }
 
             base.Shutdown();
-- 
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