code: @Override
      public String format(LogRecord event)
      {
          final StringBuilder message = new StringBuilder(Constant.HUNDRED);
          appendDate(message);
          appendLevel(message, event);
          appendFunction(message, event);
          message.append(event.getMessage()).append(System.lineSeparator());
          appendThrown(message, event);
  
          return message.toString();
      }
docs: /*
  Formatter