Cannot convert null literal to non-nullable reference type.

'FunctionType.ToString()' hides inherited member 'object.ToString()'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

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

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

Possible null reference assignment.

Possible null reference return.

Possible null reference return.

Possible null reference return.

Possible null reference return.