DomainObjectSet | ArrayList
        Set             | LinkedHashSet
        SortedSet       | TreeSet
    }

    def "maps map types"() {
        expect:
        def map = mapper.createEmptyMap(sourceType)
        map.getClass() == mapType

        where:
        sourceType | mapType
        Map        | LinkedHashMap
        SortedMap  | TreeMap
    }

            return new TreeSet<Object>();
        }
        throw new UnsupportedOperationException(String.format("Cannot convert a Collection to type %s.", collectionType.getName()));
    }

    Map<Object, Object> createEmptyMap(Class<?> mapType) {
        if (mapType.isAssignableFrom(LinkedHashMap.class)) {
            return new LinkedHashMap<Object, Object>();
        }
        if (mapType.isAssignableFrom(TreeMap.class)) {

        } else {
            this.userBoost = 1;
        }
        this.docFreq = docFreq;
        this.queryFreq = queryFreq;
        this.timestamp = ZonedDateTime.now();
        this.emptySource = createEmptyMap();
        this.id = SuggestUtil.createSuggestTextId(this.text);
    }

    public String getText() {
        return text;
    }

    public String[][] getReadings() {
        return readings;

        Map<Object, Object> convertedElements = COLLECTION_MAPPER.createEmptyMap(mapClass);
        for (Map.Entry<?, ?> entry : sourceObject.entrySet()) {