Asendia Shipping Method Implementation On Cs Cart

Hello everyone

So I'd like to implement a Asendia shipping method with an addon. I saw that I need to implement the tygh/shippings/services/Asendia.php service, but I'm not really sure how I should approach this since the API is quite a bit different than the other shipping methods I've looked at. + each vendor should have the ability to add orders to a master shipment that goes to Asendia or create a master shipment on a designated day with all the prepared orders.

Does anyone have any experience with this? Any tips on how I should approach this? Or maybe the cs cart devs would want to implement this shipping method in an update?