wait the end of multiple coroutine

coroutine.kt

import kotlinx.coroutines.Dispatchers.Default
import kotlinx.coroutines.joinAll
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
import mu.KotlinLogging
import java.lang.Thread.sleep

private val logger = KotlinLogging.logger {}

fun main() {
  logger.info { "start" }
  runBlocking {
    val jobs = IntRange(0, 2).map {
      launch(Default) {
        logger.info { "launch $it" }
        sleep(5000)
      }
    }
    jobs.joinAll()
  }
  logger.info { "stop" }
}

// implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2-native-mt'