Built in XML Schema types

While working on the Woden implementation of the WSDL 2.0 component model 
I came across an implementation detail that isn't spelled out in the spec. 
I'd like some input from the working group.

Section 3.1 of the WSDL 2.0 spec states that the XML schema types are 
built in to WSDL 2.0 and do not have to be imported. Should these types be 
available from the type definitions within the Description component? i.e. 
In a WSDL 2.0 component model implementation, should I be able to access 
these types from the type definitions on the Description component?

Thanks,

Lawrence Mandel

Software Developer
IBM Rational Software
Phone: 905 - 413 - 3814   Fax: 905 - 413 - 4920
lmandel@ca.ibm.com