code: def fetchPlanInfo(self, plan_id):
          
          data = {"event_reminder_id": plan_id}
          j = self._post(self.req_url.PLAN_INFO, data, fix_request=True, as_json=True)
          return Plan._from_fetch(j["payload"])
docs: Fetches a :class:`models.Plan` object from the plan id
  
          :param plan_id: Plan ID to fetch from
          :return: :class:`models.Plan` object
          :rtype: models.Plan
          :raises: FBchatException if request failed