map.put("789", "abc");
roundTrip(18, 21, map);
roundTrip(2, 5, new LinkedHashMap());
roundTrip(18, 21, new LinkedHashMap(map));
MapSerializer serializer = new MapSerializer();
kryo.register(HashMap.class, serializer);
kryo.register(LinkedHashMap.class, serializer);
serializer.setKeyClass(String.class, kryo.getSerializer(String.class));
serializer.setKeysCanBeNull(false);
serializer.setValueClass(String.class, kryo.getSerializer(String.class));
roundTrip(14, 17, map);
serializer.setValuesCanBeNull(false);
roundTrip(14, 17, map);
}