code: def common(self):
          
          # if authenticated and successfully renewed authentication if needed
          if self.request.session.get("authenticated") and (not self.renew or self.renewed):
              return self.authenticated()
          else:
              return self.not_authenticated()
docs: Common part execute uppon GET and POST request
  
              :return:
                  * The returned value of :meth:`authenticated` if the user is authenticated and
                    not requesting for authentication or if the authentication has just been renewed
                  * The returned value of :meth:`not_authenticated` otherwise
              :rtype: django.http.HttpResponse