@Override
    public Data getValueData() {
        if (valueData == null) {
            valueData = serializationService.toData(valueObject);
        }
        return valueData;
    }
@Override
    @Test
    public void getValueData_caching() {
        QueryableEntry entry = createEntry("key", "value");

        assertSame(entry.getValueData(), entry.getValueData());
    }