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kotlinlang

What is the recommanded way to turn a `ReceiveChannel` to a shared `BroadcastChannel`? I would like to provide the equivalent of Reactor `share()` operator (<https://github.com/sdeleuze/spring-kotlin-deepdive/blob/step4/src/main/kotlin/io/spring/deepdive/web/ArticleHandler.kt#L35-L38>) with Kotlin coroutines (<https://github.com/sdeleuze/spring-kotlin-deepdive/blob/step3-coroutine/src/main/kotlin/io/spring/deepdive/web/ArticleController.kt#L52-L57>).