flutter_facebook_auth library Null safety

Classes

AccessToken
Class that contains the facebook access token data
FacebookAuth
this class implements the FacebookAuthPlatform interface and calls to the native APIs on Android, iOS and web.
FacebookPermissions
this class is used to saved the granted and declined permissions after login
LoginResult
class to handle a login request

Enums

LoginBehavior
defines the login ui Behavior on Android
LoginStatus