Custom object converter is not applied on complex types about cartridge-java HOT 2 CLOSED

public class CustomMappersTest {
    @Test
    void testCustomTimestampMapper() {
        MessagePackMapper defaultMapper = DefaultMessagePackMapperFactory.getInstance().defaultComplexTypesMapper();
        defaultMapper.registerObjectConverter(
                Timestamp.class, StringValue.class, object -> ValueFactory.newString(String.valueOf(object.getTime())));

        Timestamp ts = Timestamp.from(Instant.now());
        List<Object> tuple = Arrays.asList("sbc", 123, Arrays.asList("abc", ts), ts);
        ArrayValue packedTuple = defaultMapper.toValue(tuple);
        assertEquals(tuple.size(), packedTuple.size());
    }
}