Is there a way to inject external XML Schema types into the WSDL generated
from a SoapService?  In "classic" asmx, we could do this, but it involved
using Soap Reflection Hooks and quite a bit of work.

What I would like to do is somehow bind an XmlElement type to an element
declaration in an external schema.  Given a function like:

[return: SchemaType(QName, [schemaLocation])]
public XmlElement foo();

The WSDL generator would inject the schema definition -- either inline or as
an import.  Anyway, I know that an attribute like this doesn't exist.  Is
there a reasonable WSE workwround?  Thanks,

- Erik