if (!Types.isConstructable(classInfo.getDescribedClass(), true)) {
throw new MappingException("mapping.classNotConstructable",
classInfo.getDescribedClass().getName());
}
JPAClassNature nature = new JPAClassNature(classInfo);
ClassDescriptorImpl descriptor = new ClassDescriptorImpl();
descriptor.addNature(ClassDescriptorJDONature.class.getName());
ClassDescriptorJDONature jdoNature = new ClassDescriptorJDONature(
descriptor);