* @throws DatatypeConfigurationException
*/
@Test
public void overrideDefaultCloneableToImmutable() throws DatatypeConfigurationException {
PassThroughConverter cc = new PassThroughConverter(Date.class, Calendar.class);
MapperFactory factory = MappingUtil.getMapperFactory();
factory.getConverterFactory().registerConverter(cc);
GregorianCalendar cal = new GregorianCalendar();