In modern java world, generic type is very important, one case for hibernate is customize DynamicParameterizedType for json deserialization, DynamicParameterizedType.RETURNED_CLASS is not satisfied for List and Map, there must be some thing like DynamicParameterizedType.GENERIC_RETURNED_CLASS, so I created HHH-12202, it need call JavaXMember.getJavaType(), please make it public.