}
    }

    /*
     * While the current implementation returns `this`, that's not something we mean to guarantee.
     * Anyway, the purpose of this method is to implement a BinaryOperator combiner for a Collector,
     * so its return value will get used naturally.
     */
    @SuppressWarnings("CanIgnoreReturnValueSuggester")
    ImmutableTableCollectorState<R, C, V> combine(

     * @throws DictionaryException if the input stream cannot be parsed.
     */
    protected void reload(final StemmerOverrideUpdater updater, final InputStream in) {
        final Pattern parsePattern = Pattern.compile("(.*)\\s*=>\\s*(.*)\\s*$");
        final List<StemmerOverrideItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;

  private static void checkTryParse(double expected, String input) {
    assertThat(Doubles.tryParse(input)).isEqualTo(Double.valueOf(expected));
    assertThat(input)
        .matches(
            Pattern.compile(
                Doubles.FLOATING_POINT_PATTERN.pattern(), Doubles.FLOATING_POINT_PATTERN.flags()));
  }

  @GwtIncompatible // Doubles.tryParse
  public void testTryParseHex() {

        assertEquals("custom_field", queryContext.getDefaultField());

        queryContext.setDefaultField(null);
        assertNull(queryContext.getDefaultField());
    }

    // Test complex scenario with multiple operations
    public void test_complexScenario() {
        getMockRequest().setAttribute(Constants.FIELD_LOGS, new HashMap<String, List<String>>());

        assertNotNull(dataStoreParams.get("camelCaseKey"));

        dataStoreParams.put("snake_case_key", "value2");
        assertNotNull(dataStoreParams.get("snake_case_key"));
    }

    // Test with complex object values
    public void test_complexObjectValues() {
        Map<String, String> complexObject = new HashMap<>();
        complexObject.put("nested", "value");

        manager.process(request, response, chain);

        assertEquals(201, response.getStatus());
        assertEquals("application/json", response.getHeader("Content-Type"));
        assertEquals("Complex response", response.getWrittenContent());
        assertTrue(chain.wasDoFilterCalled());
    }

    // Test implementation classes

    private static class TestWebApiManager implements WebApiManager {

        assertEquals(type, exception.getType());
        assertEquals(message, exception.getMessage());
    }

    public void test_exceptionInComplexScenario() {
        // Test exception in a more complex scenario
        InvalidAccessTokenException exception = null;
        String expectedType = "Bearer";
        String expectedMessage = "Token has expired";

        // Simulate a token validation scenario

        assertNotSame(loginException.getMessageCode(), logoutException.getMessageCode());
    }

    public void test_complexMessageCode() {
        // Setup - test with a complex message code that has parameters
        final String errorDetail = "Authentication failed";
        final VaMessenger<FessMessages> complexMessageCode =

        RankFusionSearcher simpleSearcher = new SimpleSearcher();
        assertEquals("simple", simpleSearcher.getName());
    }

    public void test_getName_complexCamelCaseSearcher() {
        // Test with complex camel case naming
        RankFusionSearcher complexSearcher = new VeryComplexRankFusionSearcher();
        assertEquals("very_complex_rank_fusion", complexSearcher.getName());
    }

   *
   * @throws NullPointerException if any of {@code elements} is null
   * @since 7.0 (source-compatible since 2.0)
   */
  // This the best we could do to get copyOfEnumSet to compile in the mainline.
  // The suppression also covers the cast to E[], discussed below.
  // In the backport, we don't have those cases and thus don't need this suppression.
  // We keep it to minimize diffs.