firstFuture.set(null);
    assertThat(second.toString()).contains(secondCallable.future.toString());
  }

  private static class BlockingCallable implements Callable<@Nullable Void> {
    private final CountDownLatch startLatch = new CountDownLatch(1);
    private final CountDownLatch stopLatch = new CountDownLatch(1);

    private volatile boolean running = false;

 * If an {@code Error} is thrown, the error will propagate and execution will stop until it is
 * restarted by a call to {@link #execute}.
 */
@J2ktIncompatible
@GwtIncompatible
final class SequentialExecutor implements Executor {
  private static final LazyLogger log = new LazyLogger(SequentialExecutor.class);

  enum WorkerRunningState {
    /** Runnable is not running and not queued for execution */
    IDLE,

    TestMap<K, V> inner = new TestMap<>(innermost, mutex);
    NavigableMap<K, V> outer = Synchronized.navigableMap(inner, mutex);
    return outer;
  }

  static class TestEntry<K, V> extends ForwardingMapEntry<K, V> implements Serializable {
    private final Entry<K, V> delegate;
    private final Object mutex;

    TestEntry(Entry<K, V> delegate, Object mutex) {
      this.delegate = delegate;
      this.mutex = mutex;
    }

 * unreleased versions are when Gradle projects are set up, so we use "build-unreleased-version-*" as placeholders
 * and configure them to build various versions here.
 */
public class InternalDistributionBwcSetupPlugin implements InternalPlugin {

    private static final String BWC_TASK_THROTTLE_SERVICE = "bwcTaskThrottle";
    private ProviderFactory providerFactory;

    @Inject

import org.opensearch.monitor.os.OsStats;

/**
 * Timeout target that periodically monitors search engine CPU usage.
 */
public class LoadControlMonitorTarget implements TimeoutTarget {

    private static final Logger logger = LogManager.getLogger(LoadControlMonitorTarget.class);

    private final SystemHelper systemHelper;

    private int consecutiveFailures = 0;

    /**

 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
abstract class AbstractUndirectedNetworkConnections<N, E> implements NetworkConnections<N, E> {
  /** Keys are edges incident to the origin node, values are the node at the other end. */
  final Map<E, N> incidentEdgeMap;

  AbstractUndirectedNetworkConnections(Map<E, N> incidentEdgeMap) {

    return new Exiter(Runtime.getRuntime()::exit);
  }

  @VisibleForTesting
  interface RuntimeWrapper {
    void exit(int status);
  }

  @VisibleForTesting
  static final class Exiter implements UncaughtExceptionHandler {
    private static final LazyLogger logger = new LazyLogger(Exiter.class);

    private final RuntimeWrapper runtime;

    Exiter(RuntimeWrapper runtime) {
      this.runtime = runtime;

 * Optional features of classes derived from {@code Map}.
 *
 * @author George van den Driessche
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum MapFeature implements Feature<Map> {
  /**
   * The map does not throw {@code NullPointerException} on calls such as {@code containsKey(null)},
   * {@code get(null)}, {@code keySet().contains(null)} or {@code remove(null)}.
   */

import java.util.Deque;

/**
 * Utility class for disposing of resources at the end of an application.
 * <p>
 * If there are resources that must be disposed of at the end of the application,
 * create a class that implements {@link Disposable} and register it with this class.
 * </p>
 *
 * @author koichik
 */
public abstract class DisposableUtil {

    /**
     * Do not instantiate.
     */
    protected DisposableUtil() {

import jcifs.internal.smb2.lease.Smb2LeaseKey;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Lease V1 Create Context Response
 *
 * MS-SMB2 2.2.14.2.10
 */
public class LeaseV1CreateContextResponse implements CreateContextResponse {

    /**
     * Context name for lease response
     */
    public static final String CONTEXT_NAME = "RqLs";

    private static final byte[] CONTEXT_NAME_BYTES = CONTEXT_NAME.getBytes();