public void handle(Message<Integer> msg) {
sendBatch(msg, msg.body(), 10);
}
});
Observable<Buffer> res=rx.<Integer,JsonArray>observeStream("countdown", 400)
.map(new Func1<RxStream<Integer, JsonArray>, JsonArray>() {
public JsonArray call(RxStream<Integer, JsonArray> s) {
int start = s.value().get(0);
if (start > 0) {
s.next(start - 10);