Windows.UI.Notifications JavaScript example

Windows.UI.Notifications.js

if(Windows !== 'undefined' && 
     Windows.UI !== 'undefined' && 
     Windows.UI.Notifications !== 'undefined') {
  var notifications = Windows.UI.Notifications;
  //Get the XML template where the notification content will be suplied
  var template = notifications.ToastTemplateType.toastImageAndText01;
  var toastXml = notifications.ToastNotificationManager.getTemplateContent(template);
  //Supply the text to the XML content
  var toastTextElements = toastXml.getElementsByTagName("text");
  toastTextElements[0].appendChild(toastXml.createTextNode(message));
  //Supply an image for the notification
  var toastImageElements = toastXml.getElementsByTagName("image");
  //Set the image this could be the background of the note, get the image from the web
  toastImageElements[0].setAttribute("src", "https://raw.githubusercontent.com/seksenov/grouppost/master/images/logo.png");
  toastImageElements[0].setAttribute("alt", "red graphic");
  //Specify a long duration
  var toastNode = toastXml.selectSingleNode("/toast");
  toastNode.setAttribute("duration", "long");
  //Specify the audio for the toast notification                       
  var audio = toastXml.createElement("audio");
  audio.setAttribute("src", "ms-winsoundevent:Notification.IM");
  //Specify launch paramater
  toastXml.selectSingleNode("/toast").setAttribute("launch", '{"type":"toast","param1":"12345","param2":"67890"}');
  //Create a toast notification based on the specified XML
  var toast = new notifications.ToastNotification(toastXml);
  //Send the toast notification
  var toastNotifier = notifications.ToastNotificationManager.createToastNotifier();
  toastNotifier.show(toast);
}

Do you know how to put button in the toast?