public function getPromotionsAsync($marketplace_id, $limit = null, $offset = null, $promotion_status = null, $promotion_type = null, $q = null, $sort = null)
    {
        return $this->getPromotionsAsyncWithHttpInfo($marketplace_id, $limit, $offset, $promotion_status, $promotion_type, $q, $sort)
            ->then(
                function ($response) {