code: @Override
      public String format(LogRecord r) {
          String text = formatMessage(r);
  
          return createFormattedString(r, NULL_ID, text);
      }
docs: Format the given log record and return the formatted string.
  The resulting formatted String will normally include a localized and formated version of
  the LogRecord's message field. The Formatter.formatMessage convenience method can (optionally) be
  used to localize and format the message field.
  
  @param record the log record to be formatted.
  @return the formatted log record