close method
void
close()
The close()
method of the Notification interface is used to
close/remove a previously displayed notification.
Note: This API shouldn't be used just to have the notification removed from the screen after a fixed delay since this method will also remove the notification from any notification tray, preventing users from interacting with it after it was initially shown. A valid use for this API would be to remove a notification that is no longer relevant (e.g. the user already read the notification on the webpage in the case of a messaging app or the following song is already playing in a music app).
Implementation
external void close();