UE4 and GameKit

Greetings to all. My Team and I are currently working on an integration of Apple’s GameKit matchmaker and an UE4 project. We have found out that the base code of Unreal has certain implementations already done but they are incomplete or use deprecated functionalities such like GKSession.

Is there any guide, tutorial, repository or even a small hint on how should one approach to the integration of Apple’s GameCenter, specifically the matchmaker part by implementing GKMatch? We are aware that some of the unreal’s base code uses GKTurnBasedMatch but we would appreciate more information on the subject.