SourceGenerator generates invalid class descriptor files

SourceGenerator generates class descriptor files for classes specified in the
<extends/> element of the binding file.

If in my binding file I have:
<n:complexTypeBinding name="Fault">
<java-class abstract="true">
<extends>java.lang.Exception</extends>
</java-class>
</n:complexTypeBinding>

A class descriptor is generated that looks like:

public class FaultDescriptor extends java.lang.ExceptionDescriptor {
...
}

Test case details:
1) SourceGenerator command: java cp .;castor-0.9.5.3.jar;castor-0.9.5.3
xml.jar;xml-apis.jar;xercesImpl.jar org.exolab.castor.builder.SourceGenerator -
i "castor-bug.xsd" -types j2 -nomarshall -binding-file castor-bug-binding.xml

Attachments to be added:
-Example schema.
-Example binding file.