Provides access to the Google Play Games platform. This is an implementation of UnityEngine.SocialPlatforms.ISocialPlatform. Activate this platform by calling the Activate method, then authenticate by calling the Authenticate method. After authentication completes, you may call the other methods of this class. This is not a complete implementation of the ISocialPlatform interface. Methods lacking an implementation or whose behavior is at variance with the standard are noted as such.