}

    @Override
    byte[] getBytesInternal() {
      return bytes;
    }

    @Override
    boolean equalsSameBits(HashCode that) {
      // We don't use MessageDigest.isEqual() here because its contract does not guarantee
      // constant-time evaluation (no short-circuiting).
      if (this.bytes.length != that.getBytesInternal().length) {
        return false;
      }

    }

    @Override
    byte[] getBytesInternal() {
      return bytes;
    }

    @Override
    boolean equalsSameBits(HashCode that) {
      // We don't use MessageDigest.isEqual() here because its contract does not guarantee
      // constant-time evaluation (no short-circuiting).
      if (this.bytes.length != that.getBytesInternal().length) {
        return false;
      }

    HashCode hashCode = HashCode.fromBytes(bytes);

    assertEquals(0x0000abcd, hashCode.asInt());
    assertEquals("cdab0000", hashCode.toString());

    hashCode.getBytesInternal()[0] = (byte) 0x00;

    assertEquals(0x0000ab00, hashCode.asInt());
    assertEquals("00ab0000", hashCode.toString());
  }

  public void testPadToLong() {

    HashCode hashCode = HashCode.fromBytes(bytes);

    assertEquals(0x0000abcd, hashCode.asInt());
    assertEquals("cdab0000", hashCode.toString());

    hashCode.getBytesInternal()[0] = (byte) 0x00;

    assertEquals(0x0000ab00, hashCode.asInt());
    assertEquals("00ab0000", hashCode.toString());
  }

  public void testPadToLong() {