From 1451c443e30a9ecf16411f6996593ee3cb2f107f Mon Sep 17 00:00:00 2001
From: David Driscoll <david.driscoll@gmail.com>
Date: Wed, 4 Mar 2026 00:03:25 -0500
Subject: [PATCH] Decorate implicit string operator when File or Folder are
 known to be not null.

---
 src/ModularPipelines/FileSystem/File.cs   | 1 +
 src/ModularPipelines/FileSystem/Folder.cs | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/ModularPipelines/FileSystem/File.cs b/src/ModularPipelines/FileSystem/File.cs
index 5ed277dd20..cd98f6d97a 100644
--- a/src/ModularPipelines/FileSystem/File.cs
+++ b/src/ModularPipelines/FileSystem/File.cs
@@ -391,6 +391,7 @@ public static File GetNewTemporaryFilePath()
         return new File(fileInfo);
     }
 
+    [return: NotNullIfNotNull(parameterName: "file")]
     public static implicit operator string?(File? file)
     {
         return file?.Path;
diff --git a/src/ModularPipelines/FileSystem/Folder.cs b/src/ModularPipelines/FileSystem/Folder.cs
index f95d45fda4..476a62eb98 100644
--- a/src/ModularPipelines/FileSystem/Folder.cs
+++ b/src/ModularPipelines/FileSystem/Folder.cs
@@ -553,6 +553,7 @@ public static Folder CreateTemporaryFolder()
         return new Folder(directoryInfo);
     }
 
+    [return: NotNullIfNotNull(parameterName: "folder")]
     public static implicit operator string?(Folder? folder)
     {
         return folder?.Path;