Merge pull request #27557 from sharwell/add-overload

Add GetLanguageService overload for binary compatibility

src/Workspaces/Core/Portable/Shared/Extensions/DocumentExtensions.cs

@@ -23,6 +23,10 @@ internal static partial class DocumentExtensions
         public static TLanguageService GetLanguageService<TLanguageService>(this TextDocument document) where TLanguageService : class, ILanguageService
             => document?.Project?.LanguageServices?.GetService<TLanguageService>();
 
+        // ⚠ Verify IVTs do not use this method before removing it.
+        public static TLanguageService GetLanguageService<TLanguageService>(this Document document) where TLanguageService : class, ILanguageService
+            => document?.Project?.LanguageServices?.GetService<TLanguageService>();
+
         public static bool IsOpen(this Document document)
         {
             var workspace = document.Project.Solution.Workspace as Workspace;