code: def clean_up_webdrivers(self):
          '''
          Clean up webdrivers created during execution.
          '''
          # Quit webdrivers.
          _wtflog.info("WebdriverManager: Cleaning up webdrivers")
          try:
              if self.__use_shutdown_hook:
                  for key in self.__registered_drivers.keys():
                      for driver in self.__registered_drivers[key]:
                          try:
                              _wtflog.debug(
                                  "Shutdown hook closing Webdriver for thread: %s", key)
                              driver.quit()
                          except:
                              pass
          except:
              pasf clean_up_webdrivers(self):
          '''
          Clean up webdrivers created during execution.
          '''
          # Quit webdrivers.
          _wtflog.info("WebdriverManager: Cleaning up webdrivers")
          try:
              if self.__use_shutdown_hook:
                  for key in self.__registered_drivers.keys():
                      for driver in self.__registered_drivers[key]:
                          try:
                              _wtflog.debug(
                                  "Shutdown hook closing Webdriver for thread: %s", key)
                              driver.quit()
                          except:
                              pass
          except:
              pass
docs: Clean up webdrivers created during execution.