code: function (latest_log) {
  		if (latest_log !== null && latest_log.type !== "SYSTEM_DOWN") {
  			LOG.warn("server crashed last time", 'handlers.system');
  			LOG.event("SYSTEM_CRASHED", SR.Settings.SERVER_INFO);
  		}
  
  		LOG.event("SYSTEM_UP", SR.Settings.SERVER_INFO);
  	}
docs: perform event log