* `upgrade`: Upgrades

    assertThat(elementSet.first()).isNull();
    assertThat(elementSet.last()).isEqualTo("b");
    assertEquals(comparator, elementSet.comparator());
  }

  private static final Comparator<String> DEGENERATE_COMPARATOR =
      new Comparator<String>() {
        @Override
        public int compare(String o1, String o2) {
          return o1.length() - o2.length();
        }
      };

 * intended to "fill the gap" and provide those features of {@code Ordering} not already provided by
 * the JDK.
 *
 * @since 21.0
 * @author Louis Wasserman
 */
@GwtCompatible
public final class Comparators {
  private Comparators() {}

  /**
   * Returns a new comparator which sorts iterables by comparing corresponding elements pairwise

            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;
        }
    }

    /**

	started := tracker.Started
	if started.IsZero() || started.Equal(timeSentinel) {
		healingLogIf(ctx, fmt.Errorf("unexpected tracker healing start time found: %v", started))
		started = time.Time{}
	}

	// Final tracer update before quitting
	defer func() {
		tracker.setObject("")
		tracker.setBucket("")
		healingLogIf(ctx, tracker.update(ctx))
	}()

	for _, bucket := range healBuckets {

        AtomicInteger successCount = new AtomicInteger(0);
        ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        for (int t = 0; t < threadCount; t++) {
            final int threadId = t;
            executor.submit(() -> {
                try {
                    for (int i = 0; i < operationsPerThread; i++) {
                        String sid = "thread-" + threadId + "-key-" + i;

        } catch (Exception e) {
            assertTrue(true);
        }
    }

    // Mock classes
    private static class MockFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;

        @Override
        public String getSuggestFieldContents() {
            return "title,content";
        }

        @Override

				updates <- cache.clone()

				lastSave = cache.Info.LastUpdate
			case v, ok := <-bucketResults:
				if !ok {
					// Save final state...
					cache.Info.NextCycle = wantCycle
					cache.Info.LastUpdate = time.Now()
					scannerLogOnceIf(ctx, cache.save(ctx, er, dataUsageCacheName), "nsscanner-channel-closed")
					updates <- cache.clone()

        verify(mockNameServiceClient).getNbtAllByAddress(any(NetbiosAddress.class));
    }

    @Test
    void testConstants() {
        // Test public static final constants
        assertEquals("*\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
                NbtAddress.ANY_HOSTS_NAME);

import org.jspecify.annotations.Nullable;

/**
 * Static utility methods pertaining to {@code String} or {@code CharSequence} instances.
 *
 * @author Kevin Bourrillion
 * @since 3.0
 */
@GwtCompatible
public final class Strings {
  private Strings() {}

  /**
   * Returns the given string if it is non-null; the empty string otherwise.
   *
   * @param string the string to test and possibly return