override fun coordinatorWait(
      taskRunner: TaskRunner,
      nanos: Long,
    ) {
      taskRunner.assertLockHeld()
      if (nanos > 0) {
        taskRunner.awaitNanos(nanos)
      }
    }

    override fun <T> decorate(queue: BlockingQueue<T>) = queue

    override fun execute(
      taskRunner: TaskRunner,
      runnable: Runnable,
    ) {