OutOfBandAuthentication constructor Null safety

1. nevis_mobile_authentication_sdk
2. nevis_mobile_authentication_sdk
3. OutOfBandAuthentication
4. OutOfBandAuthentication constructor

OutOfBandAuthentication class

1. Constructors
2. OutOfBandAuthentication
3. Properties
4. hashCode
5. operationId
6. runtimeType
7. Methods
8. accountSelector
9. authenticatorSelector
10. biometricUserVerifier
11. devicePasscodeUserVerifier
12. execute
13. fingerprintUserVerifier
14. noSuchMethod
15. onError
16. onSuccess
17. pinUserVerifier
18. requestHeaders
19. setOperationId
20. toString
21. Operators
22. operator ==