Reusing closed Kotlin's Channel - kotlin

Question

I want to use Channel as a Queue, but I need to clear it periodically. I didn't found clear method for the Channel and I make workaround with Channel.cancel and create new Channel, but it looks bad.
The question is:
How can I implement using Kotlin's channel as a queue with cleaning? Recreating a channel looks not so good...
Simplified context.
I have methods called by an external system: enqueue(id: Int) and cancel() and I don't have access to system that invokes these methods (React native methods in my case).
enqueue(id: Int) - enqueue id into the queue for processing (only one item at time can be processed) and starts processing the queue if is not started before.
cancel() - cancel pending processing but allow finishing current processing for current processing item.
My Processor is a singleton and enqueue(id: Int) can be called multiple times before canceling (to add items into queue) and after (for new processing).
My solution is to use channel as a queue and consume its items as a flow. cancel() will cancel the channel that allow current item processint to finish.
The problem is that after channel.cancel() channel is closed and I need to create new channel that is not so beautiful.
fun main() = runBlocking<Unit> {
val processor = Processor()
repeat(3) { processor.enqueue(it) }
delay(150)
processor.cancelPending()
delay(500)
println("Run processing one more time.")
repeat(3) { processor.enqueue(it) }
delay(500)
}
class Processor : CoroutineScope by CoroutineScope(Dispatchers.Default) {
private var channel = Channel<Int>(50)
private var processJob: Job? = null
fun enqueue(id: Int) {
channel.offer(id)
if (processJob?.isActive == true) return
processJob = launch {
channel.consumeAsFlow().collect { process(it) }
}
}
private suspend fun process(id: Int) {
delay(100)
println("[$id] processed.")
}
fun cancelPending() {
println("Cancel.")
channel.cancel()
channel = Channel(50)
}
}