notificationCenter
            .addObserver(forName: .urlSessionTaskDidStart,
                         object: nil,
                         queue: nil) { [weak self] (notification) in
                            self?.handleURLSessionTaskDidStart(notification)
        }
        notificationCenter
            .addObserver(forName: .urlSessionTaskDidComplete,
                         object: nil,
                         queue: nil) { [weak self] (notification) in
                            self?.handleURLSessionTaskDidComplete(notification)