*
 * <p>The {@code standard} methods and any collection views they return are not guaranteed to be
 * thread-safe, even when all of the methods that they depend on are thread-safe.
 *
 * @author Louis Wasserman
 * @since 15.0
 */
@GwtCompatible
public abstract class ForwardingSortedMultiset<E extends @Nullable Object>
    extends ForwardingMultiset<E> implements SortedMultiset<E> {
  /** Constructor for use by subclasses. */

  abstract boolean equalsSameBits(HashCode that);

  /**
   * Creates a 32-bit {@code HashCode} representation of the given int value. The underlying bytes
   * are interpreted in little endian order.
   *
   * @since 15.0 (since 12.0 in HashCodes)
   */
  public static HashCode fromInt(int hash) {
    return new IntHashCode(hash);
  }

  private static final class IntHashCode extends HashCode implements Serializable {

   * ordering.
   *
   * @since 11.0 (but the bound of {@code E} was changed from {@code Object} to {@code Comparable}
   *     in 15.0)
   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  @J2ktIncompatible
  @GwtIncompatible // PriorityBlockingQueue

   *
   * @since 15.0 (since 14.0 as {@code ByteStreams.asByteSource(byte[])}).
   */
  public static ByteSource wrap(byte[] b) {
    return new ByteArrayByteSource(b);
  }

  /**
   * Returns an immutable {@link ByteSource} that contains no bytes.
   *
   * @since 15.0
   */
  public static ByteSource empty() {
    return EmptyByteSource.INSTANCE;

   * chars are actually available for reading. This means that a source may return {@code true} from
   * {@code isEmpty()} despite having readable content.
   *
   * @throws IOException if an I/O error occurs
   * @since 15.0
   */
  public boolean isEmpty() throws IOException {
    Optional<Long> lengthIfKnown = lengthIfKnown();
    if (lengthIfKnown.isPresent()) {
      return lengthIfKnown.get() == 0L;
    }

        Boolean isRunning = false;
        int count = 0;
        long sleepTime = 50; // Start with 50ms

        // Wait until the crawler starts (with exponential backoff)
        while (count < 1500 && !isRunning) {
            ThreadUtil.sleep(sleepTime);
            count++;
            final Map<String, Object> scheduler = getSchedulerItem(namePrefix);
            assertTrue(scheduler.containsKey("running"));

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

/**
 * Helper interface to implement both {@link ListenableFuture} and {@link ScheduledFuture}.
 *
 * @author Anthony Zana
 * @since 15.0
 */
@GwtCompatible
public interface ListenableScheduledFuture<V extends @Nullable Object>

			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         RetryInterval,
			Description: `sleep between each retries, allowed maximum value is '1m' e.g. '10s'`,
			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         httpTimeout,
			Description: `defines the maximum duration for each http request`,
			Optional:    true,

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  }

  @Test
  public void testFinalizeClassHasNoNestedClasses() throws Exception {
    // Ensure that the Finalizer class has no nested classes.
    // See https://github.com/google/guava/issues/1505
    assertThat(Finalizer.class.getDeclaredClasses()).isEmpty();
  }

  static class MyServerExampleWithFrq implements Closeable {
    private static final FinalizableReferenceQueue frq = new FinalizableReferenceQueue();