I am creating and selling a third-party SDK. The framework includes a subclass of UIViewController named BaseViewController. I also provide the subclass of BaseViewController (ChildViewController) as *.swift source code and xib file to be integrated into the application along with the *.framework. I encountered an issue during this integration. I cannot access the view property of the parent class UIViewController from .xib file of the ChildViewController which is integrated into the application. Please advise me on how to avoid this issue. I have prepared specific source code and screenshots. I will attach them and send them in a subsequent email.