Is there a way to inform the code analyzer that a nullable property of a returned object is not null, particularly when the object is created by a different class? For example, consider the following scenario:

is it possible to tell the code analyser that a nullable property of the returned object is not null, when the object is created by different class?
suppose i have the following

I have this code and I don’t understand why the last line gives me a warning if the previous two don’t:

I’ve created a working component based on WinForms’ UserControl. I’ve overridden a couple of existing properties that generate warning CS8765.