code: def formatter(self):
          
          formatter_chain = [
              LambdaLogMsgFormatters.colorize_errors,
  
              # Format JSON "before" highlighting the keywords. Otherwise, JSON will be invalid from all the
              # ANSI color codes and fail to pretty print
              JSONMsgFormatter.format_json,
  
              KeywordHighlighter(self._filter_pattern).highlight_keywords,
          ]
  
          return LogsFormatter(self.colored, formatter_chain)
docs: Creates and returns a Formatter capable of nicely formatting Lambda function logs
  
          Returns
          -------
          LogsFormatter