Optional buttonsA list of buttons to display below the notification text.
Notifications support up to four buttons. Attempting to add more than four will result in the notification being rejected by the service.
Optional customApplication-defined context data that can be attached to buttons on notifications.
When using forms, form data submitted will be written to customData and returned to your app by
listening to the submit NotificationActionEvent|notification-action with the trigger ActionTrigger.SUBMIT|submit.
A unique identifier for the notification.
Mandatory field for Notification updates.
Optional templatedescription of update type 'markdown', 'list' or 'custom'
Configuration options for constructing an updatable Notifications object, shared between all templates.