FingerprintUserVerifier constructor Null safety

1. nevis_mobile_authentication_sdk
2. nevis_mobile_authentication_sdk
3. FingerprintUserVerifier
4. FingerprintUserVerifier constructor

FingerprintUserVerifier class

1. Constructors
2. FingerprintUserVerifier
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. onValidCredentialsProvided
9. toString
10. verifyFingerprint
11. Operators
12. operator ==