      - returns: Self
      */
     
+    @discardableResult
     open func fetch(_ handler: ((_ alertController: UIAlertController?) -> Void)) -> Self {
         handler(self.alert)
         return self

     - returns: Self
     */
    
    open func addCancel(_ title: String = "Cancel",
                          style: UIAlertActionStyle = .cancel,
                          preferred: Bool = false,

     - returns: Self
     */
    
    @discardableResult
    open func addOK(_ title: String = "OK",
                      style: UIAlertActionStyle = .default,
                      preferred: Bool = false,
