* @author Vlad Patryshev
 */
@GwtCompatible
@NullMarked
public class FunctionsTest extends TestCase {

  public void testIdentity_same() {
    Function<@Nullable String, @Nullable String> identity = Functions.identity();
    assertThat(identity.apply(null)).isNull();
    assertThat(identity.apply("foo")).isSameInstanceAs("foo");
  }

  public void testIdentity_notSame() {

    }

    /**
     * Returns the instance for the singleton.
     *
     * @return the instance for the singleton
     */
    public static TimeoutManager getInstance() {
        return instance;
    }

    /**
     * Starts the process.
     */
    public synchronized void start() {
        if (thread == null) {
            thread = new Thread(this, "CoreLib-TimeoutManager");

 * @author Jared Levy
 * @author Hayward Chan
 * @author Chris Povirk
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class SortedMapGenerators {
  public static class ImmutableSortedMapGenerator extends TestStringSortedMapGenerator {
    @Override
    public SortedMap<String, String> create(Entry<String, String>[] entries) {
      ImmutableSortedMap.Builder<String, String> builder = ImmutableSortedMap.naturalOrder();

/**
 * A timer target that periodically flushes buffered log notification events
 * to an OpenSearch index for downstream processing.
 */
public class LogNotificationTarget implements TimeoutTarget {

    /**
     * Default constructor.
     */
    public LogNotificationTarget() {
        // Default constructor
    }

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

/**
 * Tests for CompactHashSet.
 *
 * @author Dimitris Andreou
 */
@GwtIncompatible // java.util.Arrays#copyOf(Object[], int), java.lang.reflect.Array
@NullUnmarked
public class CompactHashSetTest extends TestCase {
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    List<Feature<?>> allFeatures =
        Arrays.<Feature<?>>asList(
            CollectionSize.ANY,
            CollectionFeature.ALLOWS_NULL_VALUES,

 * href="https://github.com/google/guava/wiki/CommonObjectUtilitiesExplained">writing {@code Object}
 * methods with {@code Objects}</a>.
 *
 * @author Laurence Gonsalves
 * @since 2.0
 */
@GwtCompatible
public final class Objects extends ExtraObjectsMethodsForWeb {

  /**
   * Determines whether two possibly-null objects are equal. Returns:
   *
   * <ul>
   *   <li>{@code true} if {@code a} and {@code b} are both null.

/**
 * Unit tests for {@code TreeMultimap} with natural ordering.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public class TreeMultimapNaturalTest extends TestCase {

  @J2ktIncompatible
  @GwtIncompatible // suite
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

// TODO(user): Expand coverage and move to proper test suite.
@RunWith(JUnit4.class)
@NullUnmarked
public final class ValueGraphTest {
  private static final String DEFAULT = "default";

  MutableValueGraph<Integer, String> graph;

  @After
  public void validateGraphState() {
    assertStronglyEquivalent(graph, Graphs.copyOf(graph));

 * for web API responses, including dummy output stream management.
 */
public class WebApiResponse extends HttpServletResponseWrapper {

    /**
     * Constructs a WebApiResponse with the specified response.
     *
     * @param response The original HTTP servlet response
     */
    public WebApiResponse(final HttpServletResponse response) {
        super(response);
    }

    /**

/**
 * Job for aggregating and storing search logs.
 * This job processes search logs and stores them in the search log repository.
 */
public class AggregateLogJob {

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

    /**
     * Default constructor.
     */
    public AggregateLogJob() {
        // Default constructor
    }

    /**
     * Executes the search log aggregation job.