private void testMapping(Two anotherTwo) {
        one.setTwo(two);
        one.setAnotherTwo(anotherTwo);

        One mapped = mapper.map(one, One.class, "one");
        assertRespectsMappingIds(mapped);
    }
Same instance of Two in the fields of One. Failed
in Dozer 5.5.1, fixed by pull request #257.
core/src/test/java/com/github/dozermapper/core/functional_tests/MapIdSameInstanceTest.java