Hashing.md5().bits() + Hashing.murmur3_32().bits() + Hashing.murmur3_128().bits(),
        Hashing.concatenating(Hashing.md5(), Hashing.murmur3_32(), Hashing.murmur3_128()).bits());
  }

  public void testConcatenatingHashFunction_makeHash() {
    byte[] md5Hash = Hashing.md5().hashLong(42L).asBytes();
    byte[] murmur3Hash = Hashing.murmur3_32().hashLong(42L).asBytes();
    byte[] combined = new byte[md5Hash.length + murmur3Hash.length];