@Test
    public final void testHashCode() {
        int frequency[] = new int[64];
        
        for (int i = 0; i < 1024; i++) {
            ActorId id = new ActorId(0);
            frequency[id.hashCode() % 64]++;
        }
        
        for (int f: frequency) {
            assertTrue(f > 1024 / 2 / frequency.length);
            assertTrue(f < 1024 * 2 / frequency.length);
        }
    }