* java.util.function.Supplier}, making conversion code necessary only in one direction. At that
 * time, this interface will be officially discouraged.
 *
 * @author Harry Heymann
 * @since 2.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public interface Supplier<T extends @Nullable Object>
{
  /**

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;

/**
 * Unit test for {@link FakeTimeLimiter}.
 *
 * @author Jens Nyman
 */
public class FakeTimeLimiterTest extends TestCase {

  private static final int DELAY_MS = 50;
  private static final String RETURN_VALUE = "abc";

  private TimeLimiter timeLimiter;

  @Override

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;

/**
 * Unit test for {@link FakeTimeLimiter}.
 *
 * @author Jens Nyman
 */
public class FakeTimeLimiterTest extends TestCase {

  private static final int DELAY_MS = 50;
  private static final String RETURN_VALUE = "abc";

  private TimeLimiter timeLimiter;

  @Override

 * time-limited would be extremely annoying, so this gives you a time-limiter you can easily swap in
 * for your real time-limiter while you're debugging.
 *
 * @author Kevin Bourrillion
 * @author Jens Nyman
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class FakeTimeLimiter implements TimeLimiter {
  @CanIgnoreReturnValue // TODO(kak): consider removing this

import java.util.concurrent.Executors;
import java.util.concurrent.TimeoutException;
import junit.framework.TestCase;

/**
 * Unit test for {@link SimpleTimeLimiter}.
 *
 * @author kevinb
 * @author Jens Nyman
 */
public class SimpleTimeLimiterTest extends TestCase {

  private static final long DELAY_MS = 50;
  private static final long ENOUGH_MS = 10000;
  private static final long NOT_ENOUGH_MS = 5;

import java.util.concurrent.Executors;
import java.util.concurrent.TimeoutException;
import junit.framework.TestCase;

/**
 * Unit test for {@link SimpleTimeLimiter}.
 *
 * @author kevinb
 * @author Jens Nyman
 */
public class SimpleTimeLimiterTest extends TestCase {

  private static final long DELAY_MS = 50;
  private static final long ENOUGH_MS = 10000;
  private static final long NOT_ENOUGH_MS = 5;

 * time limit expires for a given method call, the thread running the call will be interrupted.
 *
 * @author Kevin Bourrillion
 * @author Jens Nyman
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class SimpleTimeLimiter implements TimeLimiter {

  private final ExecutorService executor;

import java.util.concurrent.TimeoutException;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Imposes a time limit on method calls.
 *
 * @author Kevin Bourrillion
 * @author Jens Nyman
 * @since 1.0
 */
@DoNotMock("Use FakeTimeLimiter")
@J2ktIncompatible
@GwtIncompatible
@SuppressWarnings("GoodTime") // should have java.time.Duration overloads
@ElementTypesAreNonnullByDefault

/**
 * Useful suppliers.
 *
 * <p>All methods return serializable suppliers as long as they're given serializable parameters.
 *
 * @author Laurence Gonsalves
 * @author Harry Heymann
 * @since 2.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Suppliers {
  private Suppliers() {}

  /**

import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests com.google.common.base.Suppliers.
 *
 * @author Laurence Gonsalves
 * @author Harry Heymann
 */
@ElementTypesAreNonnullByDefault
@GwtCompatible(emulated = true)
public class SuppliersTest extends TestCase {

  static class CountingSupplier implements Supplier<Integer> {
    int calls = 0;