docs: private void closeNonexistingAsyncAppenders() {
          org.apache.log4j.Logger rootLogger = LogManager.getRootLogger();
          if (NFLockFreeLogger.class.isInstance(rootLogger)) {
              ((NFLockFreeLogger)rootLogger).reconcileAppenders();
          }
          Enumeration enums = LogManager.getCurrentLoggers();
          while (enums.hasMoreElements()) {
              Object myLogger = enums.nextElement();
              if (NFLockFreeLogger.class.isInstance(myLogger)) {
                  ((NFLockFreeLogger)myLogger).reconcileAppenders();
              }
          }
      }