question: @ Override public void onWebSocketClose ( int statusCode , String reason ) { super . onWebSocketClose ( statusCode , reason ) ; log . info ( "Socket for peer {} closed: {}" , peerID , Integer . toString ( statusCode ) + " " + reason ) ; store . unsubscribe ( handle ) ; }
target:  Called by Jetty when the WebSocket connection is gracefully closed due to a 'close' event.