如何在kotlin协程中合并生成器？

import kotlinx.coroutines.*

fun CoroutineScope.generateData1(): ReceiveChannel<Int> = produce {
    for (i in 1..5) {
        send(i)
        delay(1000) // 模拟生成数据的延迟
    }
}

fun CoroutineScope.generateData2(): ReceiveChannel<String> = produce {
    for (i in 1..5) {
        send("Data $i")
        delay(1500) // 模拟生成数据的延迟
    }
}

suspend fun mergeGenerators() {
    val data1 = generateData1()
    val data2 = generateData2()

    while (true) {
        select<Unit> {
            data1.onReceiveOrNull { value ->
                if (value == null) {
                    data2.cancel()
                    return@onReceiveOrNull
                }
                println("Received Data1: $value")
            }
            data2.onReceiveOrNull { value ->
                if (value == null) {
                    data1.cancel()
                    return@onReceiveOrNull
                }
                println("Received Data2: $value")
            }
        }
    }
}

fun main() = runBlocking {
    mergeGenerators()
}