.field("rank", "value")
.byDefault().toClassMap());
factory.registerConcreteType(Map.Entry.class, MapEntry.class);
MapperFacade mapper = factory.getMapperFacade();
Map<String, Integer> result = mapper.mapAsMap(source, rankingType, mapType);
Assert.assertNotNull(result);
Assert.assertEquals(source.size(), result.size());
for (Ranking ranking: source) {
Assert.assertTrue(result.get(ranking.getName()).equals(ranking.getRank()));