Usage in an app extension

I want to use SwiftyDropbox not only in an iOS app but also in an app extension. The problem is the auth method require passing `UIApplication.shared` which is not available in the extension. Is there a way around it?

Checking the code I see the `UIApplication.shared` is basically only used in `MobileSharedApplication` to find the root VC when a VC is not explicitly provided. So maybe if in addition to ` public init(sharedApplication: UIApplication, controller: UIViewController?, openURL: @escaping ((URL) -> Void))` there was also a ` public init(controller: UIViewController, openURL: @escaping ((URL) -> Void))` it could work as well in an app extension.