public void testUserDefinedTypeFieldsClassNotNullable(UserDefinedTypeFieldsClassNotNullable v) throws Exception {
MessagePack msgpack = new MessagePack();
TemplateRegistry registry = new TemplateRegistry();
JavassistTemplateBuilder builder = new JavassistTemplateBuilder(registry);
Template<UserDefinedTypeFieldsClassNotNullable> tmpl = builder.buildTemplate(UserDefinedTypeFieldsClassNotNullable.class);
BufferPacker packer = msgpack.createBufferPacker();
tmpl.write(packer, v);
byte[] bytes = packer.toByteArray();
BufferUnpacker u = msgpack.createBufferUnpacker();
u.wrap(bytes);
Value value = u.readValue();