* @return the redirect URL if a redirect occurred, null otherwise
     * @throws ChildUrlsException if child URLs are discovered during processing
     * @throws DataStoreCrawlingException if an error occurs during crawling
     */
    protected String processRequest(final DataStoreParams paramMap, final Map<String, Object> dataMap, final String url,
            final CrawlerClient client) {

Tham số `name` được định nghĩa là `Optional[str]`, nhưng nó **không phải là tùy chọn**, bạn không thể gọi hàm mà không có tham số:

```Python
say_hi()  # Oh, no, this throws an error! 😱
```

Tham số `name` **vẫn được yêu cầu** (không phải là *tùy chọn*) vì nó không có giá trị mặc định. Trong khi đó, `name` chấp nhận `None` như là giá trị:

```Python

<setting id="org.eclipse.wst.jsdt.core.formatter.brace_position_for_array_initializer" value="end_of_line"/>
<setting id="org.eclipse.wst.jsdt.core.compiler.problem.assertIdentifier" value="error"/>
<setting id="org.eclipse.wst.jsdt.core.formatter.insert_space_after_comma_in_constructor_declaration_throws" value="insert"/>
<setting id="org.eclipse.wst.jsdt.core.formatter.insert_space_before_colon_in_assert" value="insert"/>

            restoreInterruptIfIsInterruptedException(ignored);
            logger
                .get()
                .log(
                    Level.WARNING,
                    "Error while attempting to shut down the service after failure.",
                    ignored);
          }
          notifyFailed(t);
          // requireNonNull is safe now, just as it was above.

            restoreInterruptIfIsInterruptedException(ignored);
            logger
                .get()
                .log(
                    Level.WARNING,
                    "Error while attempting to shut down the service after failure.",
                    ignored);
          }
          notifyFailed(t);
          // requireNonNull is safe now, just as it was above.

        suggester.indexer().indexFromDocument(() -> reader, 1000, () -> ThreadUtil.sleep(100)).then(response -> {
            numObInputDoc.set(response.getNumberOfInputDocs());
            latch.countDown();
        }).error(t -> {
            t.printStackTrace();
            latch.countDown();
            fail();
        });
        latch.await();
        assertEquals(num, numObInputDoc.get());

    /** Info map key for crawler status information. */
    public static final String CRAWLER_STATUS = "CrawlerStatus";

    /** Info map key for crawler error information. */
    public static final String CRAWLER_ERRORS = "CrawlerErrors";

    /** Info map key for crawler start time. */
    public static final String CRAWLER_START_TIME = "CrawlerStartTime";

        }
        final Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        cal.set(2027, 3 - 1, 1); // EOL Date
        eolTime = cal.getTimeInMillis();
        if (isEoled()) {
            logger.error("Your system is out of support. See https://fess.codelibs.org/eol.html");
        }
        updateSystemProperties();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

/a> para ser altamente compatibles y obtener sus beneficios (p.ej. *concurrencia estructurada*).

Creé otro paquete sobre AnyIO, como una capa delgada, para mejorar un poco las anotaciones de tipos y obtener mejor **autocompletado**, **errores en línea**, etc. También tiene una introducción amigable y tutorial para ayudarte a **entender** y escribir **tu propio código async**: <a href="https://asyncer.tiangolo.com/" class="external-link" target="_blank">Asyncer</a>. Sería particularmente...

een\"]'\nconst SELECTOR_ICON = `${SELECTOR_DATA_WIDGET} i`\n\nconst EVENT_FULLSCREEN_CHANGE = 'webkitfullscreenchange mozfullscreenchange fullscreenchange MSFullscreenChange'\n\nconst Default = {\n  minimizeIcon: 'fa-compress-arrows-alt',\n  maximizeIcon: 'fa-expand-arrows-alt'\n}\n\n/**\n * Class Definition\n * ====================================================\n */\n\nclass Fullscreen {\n  constructor(_element, _options) {\n    this.element = _element\n    this.options = $.extend({}, Default,...