Jackson: register subtypes using Reflections

JacksonConfig.java

private void registerSubtypes(ObjectMapper objectMapper, Class<?> base) {
	Reflections reflections = new Reflections(base.getPackage().getName());
	Class<?>[] subTypes = reflections.getSubTypesOf(base).toArray(new Class<?>[0]);
	objectMapper.registerSubtypes(subTypes);
}