code: func CloseNotification(id uint32) (err error) {
  	conn, err := dbus.SessionBus()
  	if err != nil {
  		return
  	}
  
  	obj := conn.Object(DbusInterfacePath, DbusObjectPath)
  	call := obj.Call(CallCloseNotification, 0, id)
  	err = call.Err
  	return
  }
docs: // CloseNotification closes the notification if it exists using its id.