public JavaScriptAlertResult(IActionResult result, JavaScriptAlert alert)
        {
            if (result == null)
            {
                throw new ArgumentNullException(nameof(result));
            }
            if (alert == null)
            {
                throw new ArgumentNullException(nameof(alert));
            }

            _result = result;
            _alert  = alert;
        }
 public static IActionResult AddJavaScriptAlert(this IActionResult result, JavaScriptAlert alert)
 => new JavaScriptAlertResult(result, alert);