@Override
  public LogData parseBuffer(ParsingContext parsingContext) throws ParseException {
    LogData logData = null;
    // build an event from the previous match (held in current map)
    LoggingEvent event = buildEvent(parsingContext);
    if (event != null) {
      logData = Log4jUtil.translateLog4j(event);
    }
    return logData;
    // data.currentMap.putAll(processEvent(eventMatcher.toMatchResult(), data));
  }
Convert a keyword-to-values map to a LoggingEvent

@param fieldMap
@param exception

@return logging event
olv-core/src/main/java/pl/otros/logview/parser/log4j/Log4jPatternMultilineLogParser.java