@Test
public void shouldREturnFieldReader() {

    Person person = Person.builder().withId(10L).withAge(10).withName("Ada").withPhones(singletonList("234234324")).build();
    Field[] fields = Person.class.getDeclaredFields();
    Field id = Stream.of(fields).filter(f -> f.getName().equals("id")).findFirst().get();
    FieldWriter writer = writerFactory.apply(id);
    Assertions.assertNotNull(writer);
}