Previously, I would use PlayFabData and PlayFabClientAPI to access AuthKey in order to do checks of whether or not the user was logged in. However, since I haven't updated PlayFab in a while, I decided to download the latest package, but noticed that it does not include PlayFabData class and PlayFabClientAPI class has a variable for authkey, but it is private instead of public. Were these changes intentional or should I continue using the older version of PlayFabClientAPI and keep PlayFabData in my project?