code: static synchronized void clearLogContext() {
          final LogContext embeddedLogContext = Holder.LOG_CONTEXT;
          // Remove the configurator and clear the log context
          final Configurator configurator = embeddedLogContext.getLogger("").detach(Configurator.ATTACHMENT_KEY);
          // If this was a PropertyConfigurator we can use the LogContextConfiguration API to tear down the LogContext
          if (configurator instanceof PropertyConfigurator) {
              final LogContextConfiguration logContextConfiguration = ((PropertyConfigurator) configurator).getLogContextConfiguration();
              clearLogContext(logContextConfiguration);
          } else if (configurator instanceof LogContextConfiguration) {
              clearLogContext((LogContextConfiguration) configurator);
          } else {
              // Remove all the handlers and close them as well as reset the loggers
              final List<String> loggerNames = Collections.list(embeddedLogContext.getLoggerNames());
              for (String name : loggerNames) {
                  final Logger logger = embeddedLogContext.getLoggerIfExists(name);
                  if (logger != null) {
                      final Handler[] handlers = logger.clearHandlers();
                      if (handlers != null) {
                          for (Handler handler : handlers) {
                              handler.close();
                          }
                      }
                      logger.setFilter(null);
                      logger.setUseParentFilters(false);
                      logger.setUseParentHandlers(true);
                      logger.setLevel(Level.INFO);
                  }
              }
          }
      }
docs: Attempts to clear the global log context used for embedded servers.