SwiftyDropbox Getting token when handling return URL

Writen an app which needs to connect to multiple drobox account so following the instructions here

http://dropbox.github.io/SwiftyDropbox/api-docs/latest/

I am handling the return URL after authorising and the page says

• "at this point, the app that is integrating with the SDK should persistently save the tokenUid from the DropboxAccessToken field of the DropboxOAuthResult object returned from the handleRedirectURL(or handleRedirectURLTeam) method"

I am struggling to make this work and to come up with the correct code other than the standard below. Can anyone advise how i get the token returned please?

        if let authResult = DropboxClientsManager.handleRedirectURL(url)

        {

            switch authResult

            {

            case .success:

                print("Success! User is logged into Dropbox.")

            case .cancel:

                print("Authorization flow was manually canceled by user!")

            case .error(_, let description):

                print("Error: \(description)")

            }

        }