private IObservable <Unit> ObserveDelete()
        {
            return(DeleteCommand.ActivateGestures()
                   .SelectMany(x => _restClient.DeleteAsync(Url).ToObservable(), (x, y) => y)
                   .Take(1)
                   .AsUnit()
                   .Catch <Unit, Exception>(x =>
            {
                _schedulerService.Dispatcher.Schedule(() => _messageService.Post(Constants.UI.ExceptionTitle, _exceptionFactory(x)));

                return ObserveDelete();
            }));
        }