protected void setupBasePolicySettings(TimeBasedRollingPolicy<ILoggingEvent> policy) {
   policy.setFileNamePattern(getFileNamePattern());
   if (getHistorySize() > 0) {
     policy.setMaxHistory(getHistorySize());
     policy.setCleanHistoryOnStart(true);
   }
   if (totalSize != null && totalSize.length() > 0) {
     policy.setTotalSizeCap(FileSize.valueOf(totalSize));
   }
 }