Notify.Notification.prototype.update

function update(summary: String, body: String, icon: String): Boolean {
    // Gjs wrapper for notify_notification_update()
}

Updates the notification text and icon. This won't send the update out and display it on the screen. For that, you will need to call Notify.Notification.prototype.show.

summary: The new required summary text.
body: The optional body text.
icon: The optional icon theme icon name or filename.
Returns: true, unless an invalid parameter was passed.