Code Analysis ReferenceAnalyzersRCS1196On this pageRCS1196: Call extension method as instance methodPropertiesPropertyValueDefault SeverityInfoMinimum language version-ExamplesExample #1diagnostic.csvar x = Enumerable.Select(items, f => f.ToString())fix.csvar x = items.Select(f => f.ToString());Applies toExtension for VS 2022Extension for VS CodeExtension for Open VSXPackage Roslynator.Analyzers