Comparator<byte[]> comparator2 = UnsignedBytes.lexicographicalComparatorJavaImpl();
    Random rnd = new Random(714958103);
    for (int trial = 0; trial < 100; trial++) {
      byte[] left = new byte[1 + rnd.nextInt(32)];
      rnd.nextBytes(left);
      byte[] right = left.clone();
      assertThat(comparator1.compare(left, right)).isEqualTo(0);