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

def fetchPlanInfo(self, plan_id):
        """
        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
        """
        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"])