Kafka but not reactive, how to?

[luongdn]

I'm just trying out Quarkus (using Kotlin) with a small project that connects to Kafka and process messages. Searching extension page, there are couple of Kafka related ones and I believe these two satisfy what I'm trying to achieve:

• APACHE KAFKA CLIENT: https://quarkus.io/extensions/io.quarkus/quarkus-kafka-client/
• SMALLRYE REACTIVE MESSAGING - KAFKA CONNECTOR: https://quarkus.io/extensions/io.quarkus/quarkus-smallrye-reactive-messaging-kafka/

I installed Apache Kafka Client because I don't want to do reactive approach and see how it goes. But the documentation for this extension is actually for Smallrye/reactive version. The code there (imports) is not working with this one. So my question is where is the right documentation, or is it impossible to just connect to Kafka not using reactive framework? Then why listing the native API extension?