in src/main/java/com/googlesource/gerrit/plugins/websession/broker/log/Log4jWebSessionLogger.java [33:36]
public Log4jWebSessionLogger(SystemLog systemLog, ServerInformation serverInfo) {
super(systemLog, serverInfo, LOG_NAME, new PatternLayout("[%d{ISO8601}] [%t] %-5p : %m%n"));
this.msgLog = LoggerFactory.getLogger(LOG_NAME);
}