Can't define a Variant Option by typeBuilder.DefineNestedType() after MacroPhase.BeforeInheritance. about nemerle

No matter, it's not working, new error on BeforeTypedMembers phase and higher says:
`override' specified on method MemberObj.MyClass._N_GetVariantCode() : int, but there is no such member in parent to override. Issue must be reopened.

The bug is return if we mark macro on class and in define variant in macro like this:

  def var = typeBuilder.DefineNestedType(<[decl: variant Test {}; ]>);

  def variantOptionBuilder = var.DefineNestedType(
  <[ variant_option: | $(optionName.ToString() : usesite) { public override ToString() : string { "defined on BeforeTypedMembers" } } ]>);  

  variantOptionBuilder.Compile();
  var.Compile();

error says: error : `override' specified on method MyClass.Test.A._N_GetVariantCode() : int, but there is no such member in parent to override