example coder with kotlin serialization: kotlinx.serialization

I am trying to implement coder for kotlinx.serialization 

[https://github.com/Kotlin/kotlinx.serialization](https://github.com/Kotlin/kotlinx.serialization)

I am stuck with the following issue 

[https://github.com/sksamuel/avro4k/issues/53](https://github.com/sksamuel/avro4k/issues/53)

can someone please  guide me how to implement coder for avro via  kotlinx.serialization and avro4k

full example here: [https://github.com/xmlking/micro-apps/tree/develop/apps/streaming-pipeline](https://github.com/xmlking/micro-apps/tree/develop/apps/streaming-pipeline)

Imported from Jira [BEAM-9837](https://issues.apache.org/jira/browse/BEAM-9837). Original Jira may contain additional context.
Reported by: xmlking.