code: async def remember(self, request, user_id):
          
          ticket = self._new_ticket(request, user_id)
          await self.remember_ticket(request, ticket)
docs: Called to store the userid for a request.
  
          This function creates a ticket from the request and user_id, and calls
          the abstract function remember_ticket() to store the ticket.
  
          Args:
              request: aiohttp Request object.
              user_id: String representing the user_id to remember