private final AtomicBoolean closed;
    private final Thread updater;

    /**
     * Constructor that makes passed in delegate run on single thread, and will block on last event.
     */
    public SimplexTransferListener(TransferListener delegate) {
        this(delegate, QUEUE_SIZE, BATCH_MAX_SIZE, true);
    }

    /**
     * Constructor that may alter behaviour of this listener.
     *

 * J2kt.
 *
 * @since 32.0.0
 */
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.TYPE, ElementType.METHOD, ElementType.CONSTRUCTOR, ElementType.FIELD})
@GwtCompatible

 * without prior notice.
 *
 */
public class ExtensionDescriptor {

    private List<String> exportedPackages;

    private List<String> exportedArtifacts;

    ExtensionDescriptor() {
        // hide constructor
    }

    public List<String> getExportedPackages() {
        if (exportedPackages == null) {
            exportedPackages = new ArrayList<>();
        }

        return exportedPackages;
    }

 *
 * @author Kevin Bourrillion
 * @since 10.0 (<a href="https://github.com/google/guava/wiki/Compatibility">mostly
 *     source-compatible</a> since 9.0)
 */
@GwtCompatible
public abstract class Ticker {
  /** Constructor for use by subclasses. */
  protected Ticker() {}

  /** Returns the number of nanoseconds elapsed since this ticker's fixed point of reference. */
  public abstract long read();

  /**

import com.google.common.collect.testing.features.CollectionSize;
import java.util.List;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests creation (typically through a constructor or static factory
 * method) of a set. Can't be invoked directly; please see {@link
 * com.google.common.collect.testing.SetTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

     * resolution will fail and no attempts to search local/remote repositories are made.
     */
    public static final String LOCAL_PATH = "localPath";

    private MavenArtifactProperties() {
        // hide constructor
    }

 *
 * @author Charles Fry
 * @since 11.0
 */
@GwtIncompatible
public abstract class ForwardingLoadingCache<K, V> extends ForwardingCache<K, V>
    implements LoadingCache<K, V> {

  /** Constructor for use by subclasses. */
  protected ForwardingLoadingCache() {}

  @Override
  protected abstract LoadingCache<K, V> delegate();

  @CanIgnoreReturnValue // TODO(b/27479612): consider removing this
  @Override

import com.google.common.collect.testing.features.CollectionSize;
import java.util.List;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests creation (typically through a constructor or static factory
 * method) of a set. Can't be invoked directly; please see {@link
 * com.google.common.collect.testing.SetTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible

 * collection generator.
 *
 * <p>{@code GwtTestSuiteGenerator} expects every {@code DerivedIterator} implementation to provide
 * a one-arg constructor accepting its inner generator as an argument. This requirement enables it
 * to generate source code (since GWT cannot use reflection to generate the suites).
 *
 * @author Chris Povirk
 */
@GwtCompatible

 * collection generator.
 *
 * <p>{@code GwtTestSuiteGenerator} expects every {@code DerivedIterator} implementation to provide
 * a one-arg constructor accepting its inner generator as an argument. This requirement enables it
 * to generate source code (since GWT cannot use reflection to generate the suites).
 *
 * @author Chris Povirk
 */
@GwtCompatible