simpleconsumer在kafka中已被弃用，org.apache.kafka.clients.consumer.kafkaconsumer是替代品。但是，它没有send（…）函数。如何使用新的kafkaconsumer重写下面的代码？

import scala.concurrent.duration._
import kafka.api.TopicMetadataRequest
import kafka.consumer.SimpleConsumer
....
val consumer = new SimpleConsumer(
    host = "127.0.0.1",
    port = 9092,
    soTimeout = 2.seconds.toMillis.toInt,
    bufferSize = 1024,
    clientId = "health-check")

// this will fail if Kafka is unavailable
consumer.send(new TopicMetadataRequest(Nil, 1))