private final Class<T> wantedType;
    private final Interner<String> stringInterner;
    private final StrictVersionParser strictVersionParser;

    public DependencyStringNotationConverter(Instantiator instantiator, Class<T> wantedType, Interner<String> stringInterner) {
        this.instantiator = instantiator;
        this.wantedType = wantedType;
        this.stringInterner = stringInterner;

        when:
        collection.addToAntBuilder("node", "name", FileCollection.AntType.ResourceCollection)

        then:
        1 * source1.addToAntBuilder("node", "name", FileCollection.AntType.ResourceCollection)
        1 * source2.addToAntBuilder("node", "name", FileCollection.AntType.ResourceCollection)
        0 * _
    }

    void "visits children when structure is visited"() {

    @Override
    protected void addAsResourceCollection(Object builder, String nodeName) {
        for (FileCollection fileCollection : getSourceCollections()) {
            fileCollection.addToAntBuilder(builder, nodeName, AntType.ResourceCollection);
        }
    }

    @Override
    public FileCollectionInternal filter(final Spec<? super File> filterSpec) {
        return new FilteredFileCollection(this, filterSpec) {
            @Override

                    maxErrors: maxErrors, maxWarnings: maxWarnings, failureProperty: FAILURE_PROPERTY_NAME) {

                source.addToAntBuilder(ant, 'fileset', FileCollection.AntType.FileSet)

                if (showViolations) {
                    formatter(type: 'plain', useFile: false)
                }

                if (isXmlRequired || isHtmlRequired) {