* output.
   *
   * <p>This escaper does not treat surrogate pairs specially and does not perform Unicode
   * validation on its input.
   */
  @SuppressWarnings("EscapedEntity") // We do mean for the user to see &#x9;" etc.
  public static Escaper xmlAttributeEscaper() {
    return XML_ATTRIBUTE_ESCAPER;
  }
  private static final Escaper XML_CONTENT_ESCAPER;
  private static final Escaper XML_ATTRIBUTE_ESCAPER;

     *       unsafe and we'd have seen our thread as the value. This state is also why a new
     *       ThreadConfinedTaskQueue object must be created for each inline execution, because
     *       observing a null thread does not mean the object is safe to reuse.
     *   <li>If this field's value is some other thread object, we know that it's not our thread.
     *   <li>If this field's value == null because it originally belonged to another thread and that

  val eventRecorder = EventRecorder()

  @BeforeEach
  fun setUp() {
    if (connectionType == H2) {
      platform.assumeHttp2Support()
    }

    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    server = MockWebServer()
    server.serverSocketFactory =

        app.include_router(internal_router)
        ```
        """
        assert self is not router, (
            "Cannot include the same APIRouter instance into itself. "
            "Did you mean to include a different router?"
        )
        if prefix:
            assert prefix.startswith("/"), "A path prefix must start with '/'"
            assert not prefix.endswith("/"), (

        subgraph venv2[.venv]
            harry-3[harry v3]
        end
    end
    stone-project ~~~ azkaban-project
```

## What Does Activating a Virtual Environment Mean { #what-does-activating-a-virtual-environment-mean }

When you activate a virtual environment, for example with:

//// tab | Linux, macOS

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

      "options": {
        "colorMode": "value",
        "graphMode": "area",
        "justifyMode": "auto",
        "orientation": "auto",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "fields": "",
          "values": false
        },
        "showPercentChange": false,
        "text": {},
        "textMode": "auto",
        "wideLayout": true
      },

      return ImmutableSortedSet.orderedBy(STRING_REVERSED).add(elements).build();
    }

    /*
     * While the current implementation returns `this`, that's not something we mean to guarantee.
     * Callers of TestContainerGenerator.order need to be prepared for implementations to return a new
     * collection.
     */
    @SuppressWarnings("CanIgnoreReturnValueSuggester")
    @Override

 * your own escapers extend this class and implement the {@link #escape(int)} method.
 *
 * @author David Beaumont
 * @since 15.0
 */
@GwtCompatible
@SuppressWarnings("EscapedEntity") // We do mean for the user to see "<" etc.
public abstract class UnicodeEscaper extends Escaper {
  /** The amount of padding (chars) to use when growing the escape buffer. */
  private static final int DEST_PAD = 32;

      "options": {
        "colorMode": "value",
        "graphMode": "none",
        "justifyMode": "auto",
        "orientation": "auto",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "fields": "",
          "values": false
        },
        "showPercentChange": false,
        "text": {},
        "textMode": "auto",
        "wideLayout": true
      },

And then, again, you get all the editor support:

<img src="/img/python-types/image06.png">

Notice that this means "`one_person` is an **instance** of the class `Person`".

It doesn't mean "`one_person` is the **class** called `Person`".

## Pydantic models { #pydantic-models }

[Pydantic](https://docs.pydantic.dev/) is a Python library to perform data validation.