logger.debug("Shutting down thread executor.");
            }
            executor.shutdown();
            executor.awaitTermination(executorTerminationTimeout, TimeUnit.SECONDS);
        } catch (final InterruptedException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to interrupt executor.", e);
            }
        } finally {

 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
import okhttp3.OkHttpClient
import okhttp3.Request

class CancelCall {
  private val executor = Executors.newScheduledThreadPool(1)
  private val client = OkHttpClient()

  fun run() {
    val request =
      Request
        .Builder()

    val flags: Int,
    val callback: DnsResolver.Callback<List<InetAddress>>,
  )

  @Implementation
  fun query(
    network: Network?,
    domain: String,
    nsType: Int,
    flags: Int,
    executor: Executor,
    cancellationSignal: CancellationSignal?,
    callback: DnsResolver.Callback<List<InetAddress>>,
  ) {
    responder(Request(network, domain, nsType, flags, callback))
  }

  companion object {

  }

  private void parallelDrainQueue(int threadCount) {
    ExecutorService executor = Executors.newFixedThreadPool(threadCount);
    for (int i = 0; i < threadCount; i++) {
      executor.execute(() -> {
        try {
          drainQueue();
        } catch (Throwable e) {
          e.printStackTrace();
        }
      });
    }
    executor.shutdown();
  }

  private void drainQueue() throws Exception {

    }

    /**
     * Authenticates using the form scheme.
     * @param credentials The credentials.
     * @param executor The executor for HTTP requests.
     */
    public void authenticate(final Credentials credentials,
            final BiConsumer<HttpUriRequest, BiConsumer<HttpResponse, HttpEntity>> executor) {
        final String tokenUrl = getParameter(TOKEN_URL);
        final String tokenPattern = getParameter(TOKEN_PATTERN);

        final AtomicInteger errorCount = new AtomicInteger(0);

        testTransformer.setName("concurrentName");

        ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        for (int i = 0; i < threadCount; i++) {
            final int threadId = i;
            executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {

    ScheduledExecutorService executor = newScheduledThreadPool(1);
    try {
      FluentFuture<?> f =
          FluentFuture.from(SettableFuture.create()).withTimeout(0, SECONDS, executor);
      ExecutionException e = assertThrows(ExecutionException.class, () -> f.get());
      assertThat(e).hasCauseThat().isInstanceOf(TimeoutException.class);
    } finally {
      executor.shutdown();
    }
  }

     */
    @Test
    public void testConcurrentBufferOperations() throws Exception {
        // Given
        int threadCount = 10;
        int opsPerThread = 100;
        ExecutorService executor = Executors.newFixedThreadPool(threadCount);
        CountDownLatch startLatch = new CountDownLatch(1);
        CountDownLatch endLatch = new CountDownLatch(threadCount);
        AtomicInteger successCount = new AtomicInteger(0);

import java.util.concurrent.Callable;
import org.jspecify.annotations.Nullable;

/**
 * A listening executor service which forwards all its method calls to another listening executor
 * service. Subclasses should override one or more methods to modify the behavior of the backing
 * executor service as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *

        final int operationsPerThread = 100;
        final ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        final List<Long> timings = Collections.synchronizedList(new ArrayList<>());

        try {
            for (int t = 0; t < threadCount; t++) {
                executor.submit(() -> {
                    for (int i = 0; i < operationsPerThread; i++) {