Swift 4 – Add Action Menu to TableviewController

override func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]?
        let deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.default, title: "Löschen" , handler: { (action:UITableViewRowAction, indexPath: IndexPath) -> Void in
            let deleteMenu = UIAlertController(title: nil, message: "Wirklich Löschen?", preferredStyle: .actionSheet)
            let deleteAction = UIAlertAction(title: "Ja", style: UIAlertActionStyle.default) { _ in // crazy closure!
                self.audits.remove(at: indexPath.item)
                Storage.store(self.audits, to: .documents, as: "runningAudit.json") // store audit
            let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: nil)
            self.present(deleteMenu, animated: true, completion: nil)
        return [deleteAction]

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