Possible null reference assignment.

Possible null reference return.

Possible null reference return.

Converting null literal or possible null value to non-nullable type.

Possible null reference return.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

Non-nullable property 'UserInfo' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference return.

Non-nullable property 'Name' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.