@Override
  @CanIgnoreReturnValue
  public Hasher putBytes(ByteBuffer bytes) {
    update(bytes);
    return this;
  }

  @Override
  @CanIgnoreReturnValue
  public Hasher putShort(short s) {
    scratch.putShort(s);
    return update(Shorts.BYTES);
  }

  @Override
  @CanIgnoreReturnValue
  public Hasher putInt(int i) {
    scratch.putInt(i);
    return update(Ints.BYTES);
  }