private static IMethodInterceptor interceptor = new RedirectingInterceptor()

    @Override
    void visitSpecAnnotation(RedirectStdIn annotation, SpecInfo spec) {
        spec.bottomSpec.allFeatures.each {
            it.addIterationInterceptor(interceptor)
        }
    }

    private static class RedirectingInterceptor implements IMethodInterceptor {

        private PipedInputStream emulatedSystemIn