*/
    @Test
    void testConcurrentWatch() throws Exception {
        // Create a thread-safe implementation
        SmbWatchHandle concurrentHandle = new SmbWatchHandle() {
            private final Object lock = new Object();
            private int watchCount = 0;

            @Override
            public List<FileNotifyInformation> watch() throws CIFSException {
                synchronized (lock) {

    return tmp.toArray(new String[0]);
  }

  static <T> Comparator<T> arbitraryNullFriendlyComparator() {
    return new NullFriendlyComparator<>();
  }

  private static final class NullFriendlyComparator<T> implements Comparator<T>, Serializable {
    @Override
    public int compare(T left, T right) {
      return String.valueOf(left).compareTo(String.valueOf(right));
    }
  }

   * @since 23.0
   */
  public static ContiguousSet<Long> closedOpen(long lower, long upper) {
    return create(Range.closedOpen(lower, upper), DiscreteDomain.longs());
  }

  final DiscreteDomain<C> domain;

  ContiguousSet(DiscreteDomain<C> domain) {
    super(Ordering.natural());
    this.domain = domain;
  }

  @Override
  public ContiguousSet<C> headSet(C toElement) {

 * result. (If you want such access, you may prefer {@link Futures#addCallback
 * Futures.addCallback}.) Still, direct {@code addListener} calls are occasionally useful:
 *
 * {@snippet :
 * final String name = ...;
 * inFlight.add(name);
 * ListenableFuture<Result> future = service.query(name);
 * future.addListener(new Runnable() {
 *   public void run() {
 *     processedCount.incrementAndGet();

 * result. (If you want such access, you may prefer {@link Futures#addCallback
 * Futures.addCallback}.) Still, direct {@code addListener} calls are occasionally useful:
 *
 * {@snippet :
 * final String name = ...;
 * inFlight.add(name);
 * ListenableFuture<Result> future = service.query(name);
 * future.addListener(new Runnable() {
 *   public void run() {
 *     processedCount.incrementAndGet();

		// aggregation.
	}
	return nil
}

// getAggregate() implementation for each AST node follows. This is
// called after calling aggregateRow() on each input row, to calculate
// the final aggregate result.

func (e *FuncExpr) getAggregate() (*Value, error) {
	switch e.getFunctionName() {
	case aggFnCount:
		return FromInt(e.aggregate.runningCount), nil

	case aggFnAvg:

    //                                                                          Definition
    //                                                                          ==========
    public static final String PATH = "crawler.dfmail";

    // ===================================================================================
    //                                                                         Entry Point

   * PeekingIterator#remove()} removes the same elements as the reference's iterator {@code
   * remove()}.
   */
  private static class PeekingIteratorTester<T extends @Nullable Object> extends IteratorTester<T> {
    private final Iterable<T> master;
    private @Nullable List<T> targetList;

    PeekingIteratorTester(Collection<T> master) {
      super(master.size() + 3, MODIFIABLE, master, IteratorTester.KnownOrder.KNOWN_ORDER);

 *   <li><strong>Line Separator Handling</strong>: Uses system-appropriate line separators</li>
 * </ul>
 */
public abstract class AbstractUpgradeGoal implements Goal {

    private final StrategyOrchestrator orchestrator;

    @Inject
    public AbstractUpgradeGoal(StrategyOrchestrator orchestrator) {
        this.orchestrator = orchestrator;
    }

    /**
     * Executes the upgrade goal.

            this.connection = connection;
        }

        public String getConnection() {
            return connection;
        }
    }

    public static class ValueHolder {
        private final Object value;

        public ValueHolder(Object value) {
            this.value = value;
        }

        public Object getValue() {
            return value;
        }
    }

    /**