public function getAdsAsync($campaign_id, $ad_group_ids = null, $ad_status = null, $limit = null, $listing_ids = null, $offset = null)
    {
        return $this->getAdsAsyncWithHttpInfo($campaign_id, $ad_group_ids, $ad_status, $limit, $listing_ids, $offset)
            ->then(
                function ($response) {