public function getListingSetRequest($promotion_id, $limit = null, $offset = null, $q = null, $sort = null, $status = null)
    {
        // Verify the required parameter 'promotion_id' is set.
        if ($promotion_id === null || (\is_array($promotion_id) && count($promotion_id) === 0)) {
            throw new \InvalidArgumentException('Missing the required parameter $promotion_id when calling getListingSet');