anchor.diff:      | IntrinsicExtensionBinding 
       /// Extensions to a type in a different assembly
       | ExtrinsicExtensionBinding 
  -    | ClassLetBinding 
  +    | ClassLetBinding of (* isStatic *) bool
       | ObjectExpressionOverrideBinding
       | ExpressionBinding 
   
  
positive.code:         | ModuleOrMemberBinding -> true
          | IntrinsicExtensionBinding  -> true
          | ExtrinsicExtensionBinding -> true
          | ClassLetBinding -> false
          | ObjectExpressionOverrideBinding -> false
          | ExpressionBinding -> false
  
  
negative.code:         | ModuleOrMemberBinding -> true
          | IntrinsicExtensionBinding  -> true
          | ExtrinsicExtensionBinding -> true
          | ClassLetBinding _ -> true
          | ObjectExpressionOverrideBinding -> true
          | ExpressionBinding -> true
          
  