code: def port(self, port):
          
          if not isinstance(port, int):
              raise WebDriverException("Port needs to be an integer")
          try:
              port = int(port)
              if port < 1 or port > 65535:
                  raise WebDriverException("Port number must be in the range 1..65535")
          except (ValueError, TypeError):
              raise WebDriverException("Port needs to be an integer")
          self._port = port
          self.set_preference("webdriver_firefox_port", self._port)
docs: Sets the port that WebDriver will be running on