MC4WP_API_v3::get_ecommerce_store_product_variants PHP Method

    public function get_ecommerce_store_product_variants($store_id, $product_id, array $args = array())
    {
        $resource = sprintf('/ecommerce/stores/%s/products/%s/variants', $store_id, $product_id);
        return $this->client->get($resource, $args);
    }