Jetty Component how to add additional steps after send http response back to the client

[Han Yainsun]

Dear Camel Community and Camel users,

Greetings to you!

Camel version: 3.20.4
Spring Boot version: 2.7.11
JDK: Amazon Corretto 17
Platform: Windows server 2019
IDE: IntelliJ IDEA 2021.3.2 (Community Edition)

I have an requirement that need calculate each message process time, incould 
total process time and backend process time. the route likes below, it seems 
that the jetty managed the http session and send the response  back to client 
automatically at the end of route.

Is it possible to explicitly inform jetty send the resonse at specific point?

Thansk in advance.

      from("jetty:http://0.0.0.0:8080/test";)
      .process(exchange -> exchange.setProperty("inbound timestamp", 
System.currentTimeMillis()))
      .to("http://localhost/mockbackend";)      
      .process(exchange -> exchange.setProperty("backend respond timestamp", 
System.currentTimeMillis()))
      .setBody(constant("hello"))
      // I expect jetty send response back to client here.
      .process(exchange -> exchange.setProperty("backend respond timestamp", 
System.currentTimeMillis()));