protected void setupConverters() {
registerConverter(new ReflectionConverter(mapper, reflectionProvider), PRIORITY_VERY_LOW);
registerConverter(new SerializableConverter(mapper, reflectionProvider, classLoaderReference), PRIORITY_LOW);
registerConverter(new ExternalizableConverter(mapper, classLoaderReference), PRIORITY_LOW);
registerConverter(new NullConverter(), PRIORITY_VERY_HIGH);
registerConverter(new IntConverter(), PRIORITY_NORMAL);
registerConverter(new FloatConverter(), PRIORITY_NORMAL);
registerConverter(new DoubleConverter(), PRIORITY_NORMAL);