code: public static String getMessage(String code) {
      String str = MESSAGE_MAP.get(code);
      if (null == str) {
        return "NO MESSAGE FOR ERROR CODE. { code=[" + code + "] }";
      }
      return str;
    }
docs: Gets the error message for the specified code.
  
  @param code
  The error code for which to get the associated error message.
  @return The error message for the specified code.