@Override
  public void initParsingContext(ParsingContext parsingContext) {
    if (timestampFormat != null) {
      parsingContext.setDateFormat(new SimpleDateFormat(timestampFormat, Locale.ENGLISH));
    }
    parsingContext.getCustomConextProperties().put(PROPERTY_LOG_EVENT_PROPERTIES, new HashMap<String, Object>());

  }
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