code: public void restore() {
  
          if (!restored) {
  
              // Remove the extra Handler from the RootLogger
              rootLogger.removeHandler(mavenLogHandler);
  
              // Restore the original state to the Root logger
              rootLogger.setLevel(originalRootLoggerLevel);
              for (Handler current : originalHandlers) {
                  rootLogger.addHandler(current);
              }
  
              // All done.
              restored = true;
          }
      }
docs: Restores the original root Logger state, including Level and Handlers.