Thread.currentThread().interrupt();
                    } finally {
                        endLatch.countDown();
                    }
                });
            }

            startLatch.countDown(); // Start all threads
            boolean completed = endLatch.await(10, TimeUnit.SECONDS);
            executor.shutdown();

  fun sendResponse(
    s: String,
    responseSent: CountDownLatch = CountDownLatch(1),
  ) = apply {
    actions += { stream ->
      stream.sink.writeUtf8(s)
      stream.sink.flush()
      responseSent.countDown()
    }
  }

  fun exhaustResponse() =
    apply {
      actions += { stream -> stream.sink.close() }
    }

  fun sleep(
    duration: Long,
    unit: TimeUnit,
  ) = apply {

    this.countDownLatch = new CountDownLatch(1);
    this.future = future;

    future.addListener(this, directExecutor());
  }

  @Override
  public void run() {
    countDownLatch.countDown();
  }

  /**
   * Verify that the listener completes in a reasonable amount of time, and Asserts that the future
   * returns the expected data.
   *

    this.latch = new CountDownLatch(1);
  }

  public void setUp() {
    future.addListener(
        new Runnable() {
          @Override
          public void run() {
            latch.countDown();
          }
        },
        exec);

    assertEquals(1, latch.getCount());
    assertFalse(future.isDone());
    assertFalse(future.isCancelled());
  }

  public void tearDown() {

    }

    abstract void doAction();
  }

  private static class CountDown extends DelayedActionRunnable {
    private final CountDownLatch latch;

    CountDown(CountDownLatch latch, long tMinus) {
      super(tMinus);
      this.latch = latch;
    }

    @Override
    protected void doAction() {
      latch.countDown();
    }
  }

                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    endLatch.countDown();
                }
            });
        }

        // Start all threads simultaneously
        startLatch.countDown();

        // Wait for completion
        assertTrue(endLatch.await(10, TimeUnit.SECONDS), "All threads should complete within timeout");

    }

    @Override
    public @Nullable Void call() throws InterruptedException {
      try {
        beganProducing.countDown();
        for (int i = 0; i < elements; i++) {
          q.put(new Object());
        }
        return null;
      } finally {
        doneProducing.countDown();
      }
    }
  }

  private static class Interrupter implements Runnable {
    final Thread threadToInterrupt;

      return newTask.latch
    }
  }

  private class AwaitIdleTask : Task("$okHttpName awaitIdle", cancelable = false) {
    val latch = CountDownLatch(1)

    override fun runOnce(): Long {
      latch.countDown()
      return -1L
    }
  }

  /** Adds [task] to run in [delayNanos]. Returns true if the coordinator is impacted. */
  internal fun scheduleAndDecide(
    task: Task,
    delayNanos: Long,

        @Override
        public void onWitnessNotification(WitnessNotification notification) {
            this.lastNotification = notification;
            notificationLatch.countDown();
        }

        @Override
        public void onRegistrationFailed(WitnessRegistration registration, Exception error) {
            // Test implementation
        }

        @Override

                } catch (Exception e) {
                    fail("Concurrent session handling failed: " + e.getMessage());
                } finally {
                    latch.countDown();
                }
            });
        }

        assertTrue(latch.await(10, TimeUnit.SECONDS));
        executor.shutdown();
    }

    @Test