public function itemsInStockCheck() {
        return function () {
            global $usces;

            $usces->error_message = $usces->zaiko_check();
            /**
             * Mirrored Welcart filter
             *
             * @ignore
             */
            $usces->error_message = apply_filters('usces_filter_cart_check', $usces->error_message);
            if (!\WCUtils::is_blank($usces->error_message)) {
                return $this->module->errors->getErrorResponse(
                    GenericErrorStore::USCES_ITEM_OUT_OF_STOCK,
                    [$usces->error_message],
                    [$usces->error_message]
                );
            }
        };
    }