itemList.add(new SynonymItem(2, new String[] { "b1", "b2" }, new String[] { "B1" }));
        itemList.add(new SynonymItem(3, new String[] { "c1" }, new String[] { "C1", "C2" }));
        itemList.add(new SynonymItem(4, new String[] { "x1", "X1" }, new String[] { "x1", "X1" }));

  private static final Random randomSource = new Random(314159265358979L);
  private static final long[] longs = new long[ARRAY_SIZE];
  private static final long[] divisors = new long[ARRAY_SIZE];
  private static final String[] decimalStrings = new String[ARRAY_SIZE];
  private static final String[] binaryStrings = new String[ARRAY_SIZE];
  private static final String[] hexStrings = new String[ARRAY_SIZE];

        WebApiException exception = new WebApiException(statusCode, message);

        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);
    }

    public void test_nestedExceptions() {
        // Test nested exceptions
        Exception innerCause = new IllegalArgumentException("Invalid argument");
        Exception middleCause = new RuntimeException("Runtime error", innerCause);

    class BadRunnableException extends RuntimeException {}

    CountingRunnable before = new CountingRunnable();
    Runnable bad =
        new Runnable() {
          @Override
          public void run() {
            throw new BadRunnableException();
          }
        };
    CountingRunnable after = new CountingRunnable();

    future.addListener(before, directExecutor());

    }
  }

  public void testBridgeMethodIgnored() {
    new NullPointerTester().testAllPublicInstanceMethods(new StringFoo());
  }

  private abstract static class DefaultValueChecker {

    private final Map<Integer, Object> arguments = new HashMap<>();

    @CanIgnoreReturnValue
    final DefaultValueChecker runTester() {
      new NullPointerTester().testInstanceMethods(this, Visibility.PACKAGE);

        CommandExecutionException cmdNotFound = new CommandExecutionException("Command 'xyz' not found");
        assertTrue(cmdNotFound.getMessage().contains("not found"));

        // Scenario 2: Command timeout
        CommandExecutionException timeout =
                new CommandExecutionException("Command execution timed out after 30 seconds", new RuntimeException("Timeout"));

    AbstractFuture<String> future = new AbstractFuture<String>() {};
    WaiterThread waiter = new WaiterThread(future);
    waiter.start();
    waiter.awaitWaiting();
    PollingThread poller = new PollingThread(future);
    poller.start();
    PollingThread poller2 = new PollingThread(future);
    poller2.start();
    PollingThread poller3 = new PollingThread(future);
    poller3.start();

        .createTestSuite();
  }

  private static String[] dedupe(String[] elements) {
    Set<String> tmp = new LinkedHashSet<>();
    Collections.addAll(tmp, elements);
    return tmp.toArray(new String[0]);
  }

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

        // Test ID change
        event.setId("new-id-456");
        assertEquals("new-id-456", event.getId());

        // Test null ID
        NullSearchLogEvent nullEvent = new NullSearchLogEvent();
        assertNull(nullEvent.getId());

        // Test empty ID
        EmptySearchLogEvent emptyEvent = new EmptySearchLogEvent();
        assertEquals("", emptyEvent.getId());
    }

  static final CharSource BROKEN_OPEN_SOURCE = new TestCharSource("ABC", OPEN_THROWS);
  static final CharSink BROKEN_WRITE_SINK = new TestCharSink(WRITE_THROWS);
  static final CharSink BROKEN_CLOSE_SINK = new TestCharSink(CLOSE_THROWS);
  static final CharSink BROKEN_OPEN_SINK = new TestCharSink(OPEN_THROWS);

  private static final ImmutableSet<CharSource> BROKEN_SOURCES =