}

    @Override
    public MinimalJavadocOptions jFlags(String... jFlags) {
        this.jFlags.addAll(Arrays.asList(jFlags));
        return this;
    }

    @Override
    public void contributeCommandLineOptions(ExecSpec execHandleBuilder) {
        execHandleBuilder
            .args(GUtil.prefix("-J", jFlags)) // J flags can not be set in the option file