futureTasks.add(insertAt, task)

    // Impact the coordinator if we inserted at the front.
    return insertAt == 0
  }

  /**
   * Schedules immediate execution of [Task.tryCancel] on all currently-enqueued tasks. These calls
   * will not be made until any currently-executing task has completed. Tasks that return true will
   * be removed from the execution schedule.
   */
  fun cancelAll() {

    if (finalizableReferenceClass == null) {
      /*
       * FinalizableReference's class loader was reclaimed. While there's a chance that other
       * finalizable references could be enqueued subsequently (at which point the class loader
       * would be resurrected by virtue of us having a strong reference to it), we should pretty

  @Test
  fun connectionPooling_Async() {
    server.enqueue(MockResponse(body = "abc"))
    server.enqueue(MockResponse(body = "def"))
    server.enqueue(MockResponse(body = "ghi"))
    client.newCall(Request.Builder().url(server.url("/a")).build()).enqueue(callback)
    callback.await(server.url("/a")).assertBody("abc")
    client.newCall(Request.Builder().url(server.url("/b")).build()).enqueue(callback)

  fun redirectToCachedResult() {
    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("Cache-Control: max-age=60")
        .body("ABC")
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .code(HttpURLConnection.HTTP_MOVED_PERM)
        .addHeader("Location: /foo")
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()

      return getResponseWithInterceptorChain()
    } finally {
      client.dispatcher.finished(this)
    }
  }

  override fun enqueue(responseCallback: Callback) {
    check(executed.compareAndSet(false, true)) { "Already Executed" }

    callStart()
    client.dispatcher.enqueue(AsyncCall(responseCallback))
  }

  override fun isExecuted(): Boolean = executed.get()

  private fun callStart() {

   * map built by MapMaker) no longer has a strong reference to this object, the garbage collector
   * will reclaim it and enqueue the phantom reference. The enqueued reference will trigger the
   * Finalizer to stop.
   *
   * If this library is loaded in the system class loader, FinalizableReferenceQueue can load
   * Finalizer directly with no problems.
   *

          .build(),
      )
    }
  }

  private fun testServerClosesOutput(mockResponse: MockResponse) {
    server.enqueue(mockResponse)
    val responseAfter = MockResponse(body = "This comes after a busted connection")
    server.enqueue(responseAfter)
    server.enqueue(responseAfter) // Enqueue 2x because the broken connection may be reused.
    val response1 = getResponse(newRequest("/a"))
    response1.body
      .source()

  fun connectionWindowUpdateOnClose() {
    server.enqueue(
      MockResponse
        .Builder()
        .body(Buffer().write(ByteArray(Http2Connection.OKHTTP_CLIENT_WINDOW_SIZE + 1)))
        .build(),
    )
    server.enqueue(
      MockResponse(body = "abc"),
    )
    // Enqueue an additional response that show if we burnt a good prior response.
    server.enqueue(
      MockResponse(body = "XXX"),
    )

   * served by the first enqueued response; the second request by the second enqueued response; and
   * so on.
   *
   * @throws ClassCastException if the default dispatcher has been
   * replaced with [setDispatcher][dispatcher].
   */
  public fun enqueue(response: MockResponse) {
    (dispatcher as QueueDispatcher).enqueue(response)
  }

  /**

        "Unable to find the enqueue node in the TF graph.");
    return;
  }

  TF_Operation* placeholder_op = TF_GraphOperationByName(
      session->graph, absl::StrCat("arg_tensor_enqueue_", tensor_id).c_str());
  if (placeholder_op == nullptr) {
    status->status = tensorflow::errors::Internal(
        "Unable to find the placeholder node as input to enqueue in the TF "
        "graph.");
    return;