AtomicReferenceFieldUpdater.<Waiter, @Nullable Thread>newUpdater(
            Waiter.class, Thread.class, "thread");
    private static final AtomicReferenceFieldUpdater<Waiter, @Nullable Waiter> waiterNextUpdater =
        AtomicReferenceFieldUpdater.<Waiter, @Nullable Waiter>newUpdater(
            Waiter.class, Waiter.class, "next");
    private static final AtomicReferenceFieldUpdater<

        AtomicReferenceFieldUpdater.<Waiter, @Nullable Thread>newUpdater(
            Waiter.class, Thread.class, "thread");
    private static final AtomicReferenceFieldUpdater<Waiter, @Nullable Waiter> waiterNextUpdater =
        AtomicReferenceFieldUpdater.<Waiter, @Nullable Waiter>newUpdater(
            Waiter.class, Waiter.class, "next");
    private static final AtomicReferenceFieldUpdater<

  }

  companion object {
    fun get(connectionPool: ConnectionPool): RealConnectionPool = connectionPool.delegate

    private var addressStatesUpdater =
      AtomicReferenceFieldUpdater.newUpdater(
        RealConnectionPool::class.java,
        Map::class.java,
        "addressStates",
      )
  }