Readonly. Refers to Push Notifications for Apple platforms, such as iOS, macOS and tvOS. The back-end service for Apple platforms is APNs ("Apple Push Notification service"). 

Apple, iOS, macOS and tvOS are registered trademarks of Apple, Inc. 

public: MpnPlatformType Apple = new MpnPlatformType("Apple");

public static readonly MpnPlatformType Apple = new MpnPlatformType("Apple");

Public static readonly Apple As MpnPlatformType = new MpnPlatformType("Apple")