code: def close_driver(self):
          
          channel = self.__get_channel()
          driver = self.__get_driver_for_channel(channel)
          if self.__config.get(self.REUSE_BROWSER, True):
              # If reuse browser is set, we'll avoid closing it and just clear out the cookies,
              # and reset the location.
              try:
                  driver.delete_all_cookies()
                  # check to see if webdriver is still responding
                  driver.get("about:blank")
              except:
                  pass
  
          if driver is not None:
              try:
                  driver.quit()
              except:
                  pass
  
              self.__unregister_driver(channel)
              if driver in self.__registered_drivers[channel]:
                  self.__registered_drivers[channel].remove(driver)
  
              self.webdriver = None
docs: Close current running instance of Webdriver.
  
          Usage::
  
              driver = WTF_WEBDRIVER_MANAGER.new_driver()
              driver.get("http://the-internet.herokuapp.com")
              WTF_WEBDRIVER_MANAGER.close_driver()