code: def authenticate(self):
          
  
          logger.info("Authenticating as %s", self.user['apple_id'])
  
          data = dict(self.user)
  
          # We authenticate every time, so "remember me" is not needed
          data.update({'extended_login': False})
  
          try:
              req = self.session.post(
                  self._base_login_url,
                  params=self.params,
                  data=json.dumps(data)
              )
          except PyiCloudAPIResponseError as error:
              msg = 'Invalid email/password combination.'
              raise PyiCloudFailedLoginException(msg, error)
  
          resp = req.json()
          self.params.update({'dsid': resp['dsInfo']['dsid']})
  
          if not os.path.exists(self._cookie_directory):
              os.mkdir(self._cookie_directory)
          self.session.cookies.save()
          logger.debug("Cookies saved to %s", self._get_cookiejar_path())
  
          self.data = resp
          self.webservices = self.data['webservices']
  
          logger.info("Authentication completed successfully")
          logger.debug(self.params)
docs: Handles authentication, and persists the X-APPLE-WEB-KB cookie so that
          subsequent logins will not cause additional e-mails from Apple.