Adding a Location Model class does… | Apple Developer Forums

Adding a Location Model class doesn't inherit from the root NSObject

I am new to xCode but learning.

I am using this learning tool:

But it says to select folder and Add File, then it will inherest some properties in the code, but it inherits nothing.

All I get is the UIKit code.

Has there been a fundamental change in xcode, or have I not gone through the right options.

When I did do Add File, there was an option of various Classes to choose from, not shown in their tutorial. I took the Cocoa one as it was default.

Can someone please help?

Simon