assertEquals("test &lt;&lt; 1", htmlEscaper().escape("test << 1"));
    assertEquals("test &gt;&gt; 1", htmlEscaper().escape("test >> 1"));
    assertEquals("&lt;tab&gt;", htmlEscaper().escape("<tab>"));

    // Test simple escape of '&'.
    assertEquals("foo&amp;bar", htmlEscaper().escape("foo&bar"));

    // If the string contains no escapes, it should return the arg.

		os.Exit(0)
	}

	flag.Usage = usage
	flag.Parse()
	if flag.NArg() != 1 {
		usage()
	}

	f, err := objfile.Open(flag.Arg(0))
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()

	tab, err := f.PCLineTable()
	if err != nil {
		log.Fatalf("reading %s: %v", flag.Arg(0), err)
	}

	stdin := bufio.NewScanner(os.Stdin)
	stdout := bufio.NewWriter(os.Stdout)

	for stdin.Scan() {
		p := stdin.Text()

  private static final ImmutableMap<Character, String> SIMPLE_REPLACEMENTS =
      ImmutableMap.of(
          '\n', "<newline>",
          '\t', "<tab>",
          '&', "<and>");

  public void testSafeRange() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    CharEscaper wrappingEscaper =

  private static final ImmutableMap<Character, String> SIMPLE_REPLACEMENTS =
      ImmutableMap.of(
          '\n', "<newline>",
          '\t', "<tab>",
          '&', "<and>");

  public void testSafeRange() throws IOException {
    // Basic escaping of unsafe chars (wrap them in {,}'s)
    CharEscaper wrappingEscaper =

            `/openapi.json`.
            """
        ),
    ],
    title: Annotated[
        str,
        Doc(
            """
            The HTML `<title>` content, normally shown in the browser tab.
            """
        ),
    ],
    swagger_js_url: Annotated[
        str,
        Doc(
            """
            The URL to use to load the Swagger UI JavaScript.

function openURL(url) {
  chrome.tabs.create({ "url": url })
}

function addLinks() {
  var links = document.getElementsByTagName("a");
  for (var i = 0; i < links.length; i++) {
    var url = links[i].getAttribute("url");
    if (url)
      links[i].addEventListener("click", function () {
        openURL(this.getAttribute("url"));
      });
  }
}

window.addEventListener("load", function () {
  addLinks();

#dee2e6}.nav-tabs.flex-column.nav-tabs-right{border-left:1px solid #dee2e6;border-right:0}.nav-tabs.flex-column.nav-tabs-right .nav-link{border-bottom-left-radius:0;border-bottom-right-radius:.25rem;border-top-left-radius:0;border-top-right-radius:.25rem;margin-left:-1px}.nav-tabs.flex-column.nav-tabs-right .nav-link:focus,.nav-tabs.flex-column.nav-tabs-right .nav-link:hover{border-color:#e9ecef #e9ecef #e9ecef transparent}.nav-tabs.flex-column.nav-tabs-right .nav-item.show .nav-link,.nav-tabs.flex-column.nav-tabs-right...

    assertEquals("test &lt;&lt; 1", xmlEscaper.escape("test << 1"));
    assertEquals("test &gt;&gt; 1", xmlEscaper.escape("test >> 1"));
    assertEquals("&lt;tab&gt;", xmlEscaper.escape("<tab>"));

    // Test all non-escaped ASCII characters.
    String s =
        "!@#$%^*()_+=-/?\\|]}[{,.;:"
            + "abcdefghijklmnopqrstuvwxyz"
            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    ```Python hl_lines="81-83"
    {!> ../../../docs_src/websockets/tutorial003.py!}
    ```

Zum Ausprobieren:

* Öffnen Sie die Anwendung mit mehreren Browser-Tabs.
* Schreiben Sie Nachrichten in den Tabs.
* Schließen Sie dann einen der Tabs.

Das wird die Ausnahme `WebSocketDisconnect` auslösen und alle anderen Clients erhalten eine Nachricht wie:

```
Client #1596980209979 left the chat
```

    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")
    page.get_by_text("GET/items/Read Items").click()
    page.get_by_role("tab", name="Schema").click()
    page.get_by_label("Schema").get_by_role("button", name="Expand all").click()
    page.screenshot(
        path="docs/en/docs/img/tutorial/separate-openapi-schemas/image03.png"
    )