docs: public static void updateKey(String key, String value) {
  		if (PROPERTIES.containsKey(key + ENC_SUFFIX)) {
  			if (value != null) {
  				PROPERTIES.setProperty(key + ENC_SUFFIX, StringEncryptorUtil.encrypt(value));
  			}
  		} else {
  			PROPERTIES.setProperty(key, value != null ? value : "");
  		}
  	}