class CityItemReadService implements CityItemReadFacade {

    @Override
    public ICResponse<Map<Long, List<CityItemInfo>>> listItemCityRelations(CityItemListRelationRequest request) {
        if(request==null){
            throw new IllegalArgumentException("request is null");
        }
        request.checkParam();
        ICResponse<Map<Long, List<CityItemInfo>>> mapICResponse = cityItemReadFacade.listItemCityRelations(request);
        return mapICResponse;
    }

}