class HogeWorker(ctx: Context, params: WorkerParameters) : CoroutineWorker(ctx, params) {
  override suspend fun doWork(): Result {
    // 1. inputDataで前WorkerのDataオブジェクトにアクセスする
    val input1 = inputData.getString(KEY_INPUT_1)
    // 2. 成功時は
    Result.success()
    // Dataを返すこともできる
    Result.success(
      workDataOf(KEY_OUTPUT_1 to output1)
    )
    /*
    逆に失敗時は
    Result.faliure()
    */
  }
}

val workManager = WorkManager.getInstance(context)


val reqFirst = OneTimeWorkRequestBuilder<FirstWorker>().build()
val reqSecond1 = OneTimeWorkRequestBuilder<Second1Worker>().build()
val reqSecond2 = OneTimeWorkRequestBuilder<Second2Worker>().build()
val reqThird = OneTimeWorkRequestBuilder<ThirdWorker>()
  .setConstraints(
    Constraints.Builder()
      .setRequiredNetworkType(NetworkType.CONNECTED). // ネットワークにつながっている時
      .build()
  )
  .build()

workManager
  .beginWith(reqFirst)
  .then(list(reqSecond1,reqSecond2))
  .then(reqThird)
  .enqueue()