writer

fun CoroutineScope.writer(    coroutineContext: CoroutineContext = EmptyCoroutineContext,     autoFlush: Boolean = false,     block: suspend WriterScope.() -> Unit): WriterJob
fun CoroutineScope.writer(    coroutineContext: CoroutineContext = EmptyCoroutineContext,     channel: ByteChannel,     block: suspend WriterScope.() -> Unit): WriterJob