Fiz exatamente igual o exemplo e não executa.

public static void main(String[] args) throws Exception{

    CamelContext context = new DefaultCamelContext();

    final XStream xstream = new XStream();
    xstream.alias("negociacao", Negociacao.class);

    context.addRoutes(new RouteBuilder() {

        @Override
        public void configure() throws Exception {
            // TODO Auto-generated method stub

            //String xStream = "";
            from("timer://negociacoes?fixedRate=true&delay=1s&period=360s").
            to("http4://argentumws.caelum.com.br/negociacoes"). 
            convertBodyTo(String.class).
            unmarshal(new XStreamDataFormat(xstream)).
            split(body()).
            log("${body}").
            end();
            //setHeader(Exchange.FILE_NAME, constant("negociacoes.xml")).
            //to("file:saida");
        }


    });

    context.start();
    Thread.sleep(20000);
    context.stop();
}