Cannot initialize optional DBDownloadUrlTask to nil in Swift 3

Question

I'm trying to integrate the Objective-C SDK (version 3.0.9) in a Swift 3 project. We could do it with the same project in its Swift 2.3 version.

In Swift 3 we get the following error:

nil cannot initialize specified type 'DBDownloadUrlTask?'
    fileprivate var fileDownloadTask: DBDownloadUrlTask? = nil

The same line compiled fine in the Swift 2.3 project.

Changing the line to:

fileprivate var fileDownloadTask: DBDownloadUrlTask<AnyObject, AnyObject>? = nil

Gets rid of the error, but not sure that is a good solution.

Greg-DB · Accepted Answer

I believe Swift 3 got more strict with its generics, so DBDownloadUrlTask<AnyObject, AnyObject> should be equivalent  to DBDownloadUrlTask. It's more explicit, but it should be fine.