i need to access the sent invitations data for a new group that just sent out approx 1300 invites.  so the api equivalent of 

   https://groups.io/g/marxmail/invitations?o=20&ord=email&d=asc

i see how to send invites, now i need to access the status  of these invites programmatically (or at least know how to get all the results at once instead of 20 at a time). i do not see the required call in the API documentation, wondering if its not hard to add to the API. 

thanks

Les