Adler32 checksum = new Adler32();
      checksum.update(testBytes, 0, testBytes.length);
      result = (byte) (result ^ checksum.getValue());
    }
    return result;
  }

  // Helpers + main

  private byte runHashFunction(int reps, HashFunction hashFunction) {
    byte result = 0x01;
    // Trick the JVM to prevent it from using the hash function non-polymorphically

      Adler32 checksum = new Adler32();
      checksum.update(testBytes, 0, testBytes.length);
      result = (byte) (result ^ checksum.getValue());
    }
    return result;
  }

  // Helpers + main

  private byte runHashFunction(int reps, HashFunction hashFunction) {
    byte result = 0x01;
    // Trick the JVM to prevent it from using the hash function non-polymorphically