anchor.diff:          System.out.println(headerBuffer.getDouble(0); // it will print 2.0
   })
   .to("direct)
  -```
  +----
   
   By default all headers are being filtered by `KafkaHeaderFilterStrategy`.
   Strategy filters out headers which start with `Camel` or `org.apache.camel` prefixes.
  
positive.code:         exchange.getIn().setBody("test event");
  })
  .to("vertx-kafka:test_topic?bootstrapServers=kafka9092")
  ```
  Then later:
  ```
  from("vertx-kafka:test_topic?bootstrapServers=kafka9092")
      .process(exchange -> {
          // get our kafka header
  
negative.code: Note: all headers propagated *from* kafka *to* camel exchange will contain `io.vertx.core.buffer.Buffer` value by default.
  
  Having the support of `io.vertx.core.buffer.Buffer` header type, will allow you un-wrap the header to any type without much knowledge in `byte[]`. For example:
  
  [source,java]
  ----
  from("direct")
      .process(exchange -> {
          // set kafka header
  