code: @Override
      public String getMessage() {
          final int maxTipLength = 10;
          int end = position + 1;
          int start = end - maxTipLength;
          if (start < 0) {
              start = 0;
          }
          if (end > jsonString.length()) {
              end = jsonString.length();
          }
          return String.format("%s (%d):%s", jsonString.substring(start, end), position, super.getMessage());
      }
docs: Get message about error when parsing illegal json
  
  @return error message