this(NEXT_SOURCE_SET_INFO.get());
    }

    private BaseLanguageSourceSet(SourceSetInfo info) {
        super(validate(info).identifier, info.publicType, info.objectFactory.sourceDirectorySet("source", "source"));
        this.objectFactory = info.objectFactory;
    }

    private static SourceSetInfo validate(SourceSetInfo info) {
        if (info == null) {