* we must return it in the following next() call even if it was in the process of being removed
     * when hasNext() was called.
     */
    private @Nullable E nextItem;

    /**
     * Index of element returned by most recent call to next. Reset to -1 if this element is deleted
     * by a call to remove.
     */
    private int lastRet;

    Itr() {
      lastRet = -1;

///

## Other Asynchronous Function Calls { #other-asynchronous-function-calls }

As the testing function is now asynchronous, you can now also call (and `await`) other `async` functions apart from sending requests to your FastAPI application in your tests, exactly as you would call them anywhere else in your code.

/// tip

@NullUnmarked
public class ObjectsTest extends TestCase {

  @SuppressWarnings({
    "ObjectEqualsForPrimitives", // test of a trivial call
    "EqualsInteger", // test of a trivial call
    "EqualsLong", // b/273939864
    "EqualsDouble", // b/273939864
    "EqualsFloat", // b/273939864
    "YodaCondition", // test of reversed call
  })
  public void testEqual() throws Exception {
    assertTrue(Objects.equal(1, 1));

        } else {
            buf.append('"').append(StringEscapeUtils.escapeJson(value.toString())).append('"');
        }
        return buf;
    }

    /**
     * Get the write call for search log ndjson.
     * @return The write call.
     */
    public static Consumer<Writer> getSearchLogNdjsonWriteCall() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

      // racing addListener calls and addListener calls completing after the future completes.
      Runnable listener = k % 2 == 0 ? collectResultsRunnable : collectResultsTimedGetRunnable;
      allTasks.add(callable(listener));
      allTasks.add(
          new Callable<@Nullable Void>() {
            @Override
            public @Nullable Void call() throws Exception {

        verify(watchHandle, times(1)).watch();
    }

    /**
     * Test call() method delegates to watch()
     */
    @Test
    void testCall() throws CIFSException {
        // Setup mock behavior
        when(watchHandle.call()).thenReturn(mockNotifications);

        // Execute
        List<FileNotifyInformation> result = watchHandle.call();

        // Verify
        assertNotNull(result);

    }

    public void test_evaluate_multipleCallsWithDifferentConfigs() {
        // Test multiple calls with different configurations
        Map<String, Object> params = new HashMap<>();
        params.put("param", "value");

        // First call with model name
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override

          executorService.submit(
              new Callable<@Nullable Void>() {
                @Override
                public @Nullable Void call() throws Exception {
                  startLatch.countDown();
                  startLatch.await();
                  callable.call();
                  doneLatch.countDown();
                  return null;
                }
              });
    }
    doneLatch.await();

        verify(mockResponse, times(2)).isReceived();
    }

    @Test
    void testReceived() {
        // Call the method
        mockResponse.received();

        // Verify that the method was called
        verify(mockResponse, times(1)).received();
    }

    @Test
    void testClearReceived() {
        // Call the method
        mockResponse.clearReceived();

        // Verify that the method was called

    var retryTlsConnection: ConnectPlan? = null
    var success = false

    // Tell the call about the connecting call so async cancels work.
    user.addPlanToCancel(this)
    try {
      if (tunnelRequest != null) {
        val tunnelResult = connectTunnel()

        // Tunnel didn't work. Start it all again.
        if (tunnelResult.nextPlan != null || tunnelResult.throwable != null) {
          return tunnelResult