out.setContent(new StringSource(writer.toString()));
exchange.setMessage(out, "out");
send(exchange);
} else if (input instanceof Unsubscribe) {
subscription = null;
UnsubscribeResponse response = new UnsubscribeResponse();
StringWriter writer = new StringWriter();
jaxbContext.createMarshaller().marshal(response, writer);
NormalizedMessage out = exchange.createMessage();
out.setContent(new StringSource(writer.toString()));
exchange.setMessage(out, "out");