AuthToken constructor Null safety

1. conduit_core
2. conduit
3. AuthToken
4. AuthToken constructor

AuthToken class

1. Constructors
2. AuthToken
3. Properties
4. accessToken
5. clientID
6. expirationDate
7. hashCode
8. isExpired
9. issueDate
10. refreshToken
11. resourceOwnerIdentifier
12. runtimeType
13. scopes
14. type
15. Methods
16. asMap
17. noSuchMethod
18. toString
19. Operators
20. operator ==