Spring boot/Quarkus/Schema registry example

I just become aware that link from “Where next?” section in Java EE and Spring Boot, where usage of Schema registry should be demonstrated, actually links it to the same page again:

I cannot find proper java nor spring boot examples for proper setup of Schema registry client in any of these. Does someone have some official link where I can find simple, buildable and working Spring boot or Quarkus client example which includes proper Kafka, Avro and on premise Schema registry client setup?
(no servers setup, I just need simple client to connect to kafka/schema registry, and deserialise simple message, or even get it as Avro GenericRecord)