@Override
    public WorkerProcessSettings sharedPackages(String... packages) {
        workerProcessBuilder.sharedPackages(packages);
        return this;
    }

    @Override
    public void useApplicationClassloaderOnly() {
        workerProcessBuilder.setImplementationClasspath(Collections.<URL>emptyList());
    }

    @Override
    public MultiRequestClient<IN, OUT> build() {