for (int i = 0; i < count; i++) {
            actualInterfaces[i] = readClass();
        }
        @SuppressWarnings("deprecation")
        Class<?> proxyClass = Proxy.getProxyClass(actualInterfaces[0].getClassLoader(), actualInterfaces);
        return proxyClass;
    }

    @Override
    protected Class<?> lookupClass(String type) throws ClassNotFoundException {
        try {

        try {
            while (!timer.hasExpired()) {
                builder.withClasspath([new File("foo$i")]).execute {

                }

                classes[classes.length - 1] = Proxy.getProxyClass(classLoaderFactory.createIsolatedClassLoader("test", []), Serializable)
                4.times {
                    // exponential grow to make it fail faster
                    Class[] dup = new Class[classes.length * 2]