<@U0AK89KT6> Nothing wrong with `CompletableDeferr...

# coroutines

[elizarov]

@jkbbwr Nothing wrong with CompletableDeferred for that. That was one of the use-cases when it was implemented. There is no other mechanism now to reply. However, some actor-based programming styles prefer replying to the requesting actor’s channel. If you are in this camp, then you should your channel with the message to receive reply.