Creates a new guest player with the designated identifier.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
A developer created
NSStringobject used to identify the guest player.
This method is used to create a new
GKPlayer object for a guest player. Treat the guest player the same as a authenticated user in regards to matchmaking services.