import static com.google.common.util.concurrent.Futures.immediateFuture;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

import static com.google.common.util.concurrent.AbstractScheduledService.Scheduler.newFixedDelaySchedule;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import static com.google.common.util.concurrent.AbstractScheduledService.Scheduler.newFixedDelaySchedule;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import static com.google.common.util.concurrent.Futures.immediateFuture;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

   * the application is complete. It does so by using daemon threads and adding a shutdown hook to
   * wait for their completion.
   *
   * <p>This is mainly for fixed thread pools. See {@link Executors#newScheduledThreadPool(int)}.
   *
   * @param executor the executor to modify to make sure it exits when the application is finished
   * @param terminationTimeout how long to wait for the executor to finish before terminating the

import static com.google.common.util.concurrent.Uninterruptibles.tryLockUninterruptibly;
import static java.util.concurrent.Executors.newFixedThreadPool;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtIncompatible;

import static com.google.common.util.concurrent.Uninterruptibles.tryLockUninterruptibly;
import static java.util.concurrent.Executors.newFixedThreadPool;
import static java.util.concurrent.Executors.newScheduledThreadPool;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtIncompatible;

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()
        .url("http://httpbin.org/delay/2") // This URL is served with a 2 second delay.

        this.context = context;
        this.handles = new ConcurrentHashMap<>();
        this.guidToHandle = new ConcurrentHashMap<>();
        this.scheduler = Executors.newScheduledThreadPool(1, r -> {
            Thread t = new Thread(r, "PersistentHandleManager");
            t.setDaemon(true);
            return t;
        });

        // Create state directory for persistent storage

        this.registrations = new ConcurrentHashMap<>();
        this.listeners = new ConcurrentHashMap<>();
        this.asyncNotifyTasks = new ConcurrentHashMap<>();
        this.scheduler = Executors.newScheduledThreadPool(3); // Increased for async notifications
        this.rpcClient = rpcClient;

        // Schedule periodic tasks
        schedulePeriodicTasks();
    }

    /**