@Override
    public Hasher putBytes(ByteBuffer bytes) {
      ensureCapacity(bytes.remaining());
      buffer.put(bytes);
      return this;
    }

    @Override
    public Hasher putUnencodedChars(CharSequence charSequence) {
      ensureCapacity(charSequence.length() * Character.BYTES);
      for (int i = 0, len = charSequence.length(); i < len; i++) {
        buffer.putChar(charSequence.charAt(i));
      }