anchor.diff:          | ModuleOrMemberBinding -> true
           | IntrinsicExtensionBinding  -> true
           | ExtrinsicExtensionBinding -> true
  -        | ClassLetBinding -> false
  +        | ClassLetBinding _ -> false
           | ObjectExpressionOverrideBinding -> false
           | ExpressionBinding -> false
   
  
positive.code:     | IntrinsicExtensionBinding 
      /// Extensions to a type in a different assembly
      | ExtrinsicExtensionBinding 
      | ClassLetBinding 
      | ObjectExpressionOverrideBinding
      | ExpressionBinding 
  
  
negative.code:         | ModuleOrMemberBinding -> OverridesOK
          | IntrinsicExtensionBinding -> WarnOnOverrides
          | ExtrinsicExtensionBinding -> ErrorOnOverrides
          | ClassLetBinding _ -> ErrorOnOverrides 
          | ObjectExpressionOverrideBinding -> OverridesOK
          | ExpressionBinding -> ErrorOnOverrides 
  
  