title: Correlation ID in Header Kafka
body: <p>I'm using kafka conluent c# client for kafka and want to implement Req-Resp pattern.
  I set Reply-to and Correlation ID header (<code>https://github.com/nestjs/nest/blob/master/packages/microservices/enums/kafka-headers.enum.ts</code>) CORRELATION_ID/REPLY_TOPIC in the request.</p>
  <p>I receive these headers on &quot;server&quot; side and reply into REPLY_TOPIC header's value topic.
  I probably should set CORRELATION_ID on response header.</p>
  <p>So questions are:</p>
  <ol>
  <li>Is there any magic inside kafka that looks for CORRELATION_ID on message's header and pushes to consumers with appropriate settings?</li>
  <li>MB somebody knows and points me how spring-kafka implement req-resp pattern?</li>
  </ol>