SwiftUI 4.0 how to know if ShareLink has been shared successfully

I am now working with the new SwiftUI 4.0 and using the new ShareLink feature . How can I know if a link or text has been shared successfully, any suggestions would be great ? I have a simple ShareLink like this

          ShareLink(item: InviteMessage) {
                    Text("Test Share")
                        .foregroundColor(.black)
                 }

before in SwiftUI 3.0 I would use this code

                .background(SharingViewController(isPresenting: $InviteOthers) {
                    let message = "Share Me"
                    let av = UIActivityViewController(activityItems: [message], applicationActivities: nil)
                    av.completionWithItemsHandler = { (activity, success, items, error) in

                        if success {
                            // shared successfully update count
                        }
                       }
                       
                    return av
                })