docs: public static String decode(String s) {
  		byte[] baKeyword = new byte[s.length() / 2];
  		for (int i = 0; i < baKeyword.length; i++) {
  			baKeyword[i] = (byte) (0xff & Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16));
  		}
  		return new String(baKeyword);// UTF-16le:Not
  	}