[xsde-users] Absent .pre() and .post() methods in some aggregators

[Boris Kolpackov]

Песоцкий Максим <aazmp at yandex.ru> writes:

> elem_s.pre(eoType);
> to
> elem_s.root_serializer().pre(eoType);

The pre()/post() functions are not generated for polymorphic
type/element aggregates (because we don't know which of the
serializers will be used). Check the 'polyroot' example -- it
deals with exactly this situation.