Question: Is it possible to produce events using reactor?

Hi, I am working with `ReactorProcessor` and I would like to produce events. I tried the following code, but it did not write any new events into **_output_** topic.
Example code:

`lateinit var pConsumer: ReactorProcessor`

```
private fun createReactParallelConsumer(): ReactorProcessor {
val producer: Producer = KafkaProducerBuilder.getProducer(kafkaConsumerConfig)
val options = ParallelConsumerOptions.builder()
.ordering(ParallelConsumerOptions.ProcessingOrder.KEY)
.maxConcurrency(parallelConsumerConfig.maxConcurrency)
// .batchSize(parallelConsumerConfig.batchSize)
.consumer(buildConsumer(kafkaConsumerConfig))
.producer(producer)
.build()
return ReactorProcessor(options)
```

```
pConsumer.react { context ->
val event = context.singleConsumerRecord
// do something with event
val result = ProducerRecord("output", event.key(),
JsonObject(mapOf("someTest" to event.offset())))
Mono.just(result)
}
```

What am i missing?

The issue names ReactorProcessor.react, ProducerRecord, and the output topic but no repository file or test. Start by tracing the shown react callback and producer configuration; done means reproducing the missing output record and documenting or fixing the identified cause.

Written by the indexing model from the issue text.