// dedicated wsdl directory.
FileArchive archive = new FileArchive();
archive.open(sourceDir.toURI());
Enumeration entries = archive.entries(bundle.getWsdlDir());
// Strictly speaking, we only need to write the files needed by
// imports of this web service's wsdl file. However, it's not
// worth actual parsing the whole chain just to figure this
// out. In the worst case, some unnecessary files under