如何让ktor netty服务器使用CachedThreadPool来处理请求？

import io.ktor.application.*
import io.ktor.routing.*
import io.ktor.server.engine.*
import io.ktor.server.netty.*

fun Application.module() {
    routing {
        // 添加路由处理程序
    }
}

fun main() {
    embeddedServer(Netty, port = 8080, module = Application::module).start()
}

import io.ktor.server.engine.*
import io.ktor.server.netty.*
import io.netty.channel.*
import io.netty.channel.nio.*
import io.netty.channel.socket.nio.*

fun main() {
    embeddedServer(Netty, port = 8080, module = Application::module) {
        configureNettyWorkerThreads(4) {
            it.channelFactory(NioServerSocketChannel::class.java)
            it.workerEventLoopGroup(NioEventLoopGroup())
        }
    }.start(wait = true)
}

import io.ktor.server.engine.*
import io.ktor.server.netty.*
import io.netty.channel.*
import io.netty.channel.nio.*
import io.netty.channel.socket.nio.*
import java.util.concurrent.*

fun main() {
    embeddedServer(Netty, port = 8080, module = Application::module) {
        configureNettyWorkerThreads(4) {
            it.channelFactory(NioServerSocketChannel::class.java)
            it.workerEventLoopGroup(NioEventLoopGroup(0, Executors.newCachedThreadPool()))
        }
    }.start(wait = true)
}