Imported Upstream version 6.6.0.89

Former-commit-id: b39a328747c2f3414dc52e009fb6f0aa80ca2492

external/api-doc-tools/mdoc/mdoc.Test/mdoc.Test.FSharp/InheritanceAlternative.fs

@@ -0,0 +1,13 @@
+module AlternativesToInheritance
+
+open System
+
+// In cases where a minor modification of a type is required, 
+// consider using an object expression as an alternative to inheritance. 
+// The following example illustrates the use of an object expression as an alternative 
+// to creating a new derived type:
+let object1 = { new Object() with
+      override this.ToString() = "This overrides object.ToString()"
+      }
+
+printfn "%s" (object1.ToString())