super.setUp();
// define a ClassResoltionByCDR resolver
_resolver = new ClassResolutionByCDR();
// add a package name to the _resolver telling it where to look for
// classes to be resolved
new PackageBasedCDRResolutionNature(_resolver)
.addPackageName("org.exolab.castor.jdo.util");
// define the ClassLoader to be used by the _resolver
ClassLoaderNature clNature = new ClassLoaderNature(_resolver);
clNature.setClassLoader(getClass().getClassLoader());
}