* It configures the xstream instance with a link converter for all StateResource implementations.
*/
@Override
protected XStream getXStream() {
XStream xStream = super.getXStream();
MethodValueSupportConverter converter = new MethodValueSupportConverter(new ReflectionConverter(xStream.getMapper(), xStream.getReflectionProvider()));
xStream.registerConverter(new LinkConverterJSON(converter, restfulie, config));
return xStream;
}