code: public static XLogInfo createLogInfo(XLog log, XEventClassifier classifier) {
  		/*
  		 * Get the possible info cached by the log.
  		 */
  		XLogInfo info = log.getInfo(classifier);
  		if (info == null) {
  			/*
  			 * Info not cached. Create it.
  			 */
  			info = XLogInfoImpl.create(log, classifier);
  			/*
  			 * Cache it.
  			 */
  			log.setInfo(classifier, info);
  		}
  		return info;
  	}
docs: Creates a new log info summary with a custom event classifier.
  
  @param log The event log to create an info summary for.
  @param classifier The event classifier to be used.
  @return The log info summary for this log.