Value of optional type 'NSURL?' not unwrapped; did you mean to use '!' or '?'?

Question

I started a Swift project with Xcode 6 Beta 6. The project was also using Core Data. After upgrading to Xcode 6 GM, I am getting the following error when compiling:

Answer 1

ok I just unwrapped the optional using '!' and the code is compiling now.

return NSManagedObjectModel(contentsOfURL: modelURL!)