Cloner should be able to deep clone entities in Map<String, List<PlanningEntity>> too

@PlanningEntity
public class TestdataEntityCollectionPropertyEntity extends TestdataObject {

    private List<TestdataEntityCollectionPropertyEntity> entityList;
    private Set<TestdataEntityCollectionPropertyEntity> entitySet;
    private Map<String, TestdataEntityCollectionPropertyEntity> stringToEntityMap;
    private Map<TestdataEntityCollectionPropertyEntity, String> entityToStringMap;
    private Map<String, List<TestdataEntityCollectionPropertyEntity>> stringToEntityListMap;