anchor.diff:          | ModuleOrMemberBinding -> true
           | IntrinsicExtensionBinding  -> true
           | ExtrinsicExtensionBinding -> true
  -        | ClassLetBinding -> true
  +        | ClassLetBinding _ -> true
           | ObjectExpressionOverrideBinding -> true
           | ExpressionBinding -> false 
   
  
positive.code:     | IntrinsicExtensionBinding 
      /// Extensions to a type in a different assembly
      | ExtrinsicExtensionBinding 
      | ClassLetBinding 
      | ObjectExpressionOverrideBinding
      | ExpressionBinding 
  
  
negative.code:             // --- Create this for use inside constructor 
              let thisId  = ident ("this",m)
              let thisValScheme  = ValScheme(thisId,NonGenericTypeScheme(thisTy),None,None,false,ValInline.Never,CtorThisVal,None,true,false,false,false)
              let thisVal    = MakeAndPublishVal cenv env (ParentNone,false,ClassLetBinding(false),ValNotInRecScope,thisValScheme,[],XmlDoc.Empty,None,false)
              thisVal
  
          {TyconRef                         = tcref
  