docs: def post_session():
      """
      This endpoint appears to be required in order to keep pubnub updates flowing for some user.
  
      This just posts a random nonce to the /users/me/session endpoint and returns the result.
      """
  
      url_string = "{}/users/me/session".format(WinkApiInterface.BASE_URL)
  
      nonce = ''.join([str(random.randint(0, 9)) for i in range(9)])
      _json = {"nonce": str(nonce)}
  
      try:
          arequest = requests.post(url_string,
                                   data=json.dumps(_json),
                                   headers=API_HEADERS)
          response_json = arequest.json()
          return response_json
      except requests.exceptions.RequestException:
          return None