Итак:

```Python
q: str | None = Query(default=None)
```

...делает параметр необязательным со значением по умолчанию `None`, так же как:

```Python
q: str | None = None
```

Таким чином:

```Python
q: str | None = Query(default=None)
```

...робить параметр необов’язковим зі значенням за замовчуванням `None`, що еквівалентно:

```Python

loadOnInit&&this.load()},e._jQueryInterface=function(t){var a=n.default(this).data(o),i=n.default.extend({},d,n.default(this).data());a||(a=new e(n.default(this),i),n.default(this).data(o,"string"==typeof t?a:t)),"string"==typeof t&&/load/.test(t)?a[t]():a._init(n.default(this))},e}();n.default(document).on("click",r,(function(e){e&&e.preventDefault(),f._jQueryInterface.call(n.default(this),"load")})),n.default((function(){n.default(r).each((function(){f._jQueryInterface.call(n.default(this))}))...

            assertEquals(0, SMBUtil.readInt4(buffer, 4)); // Default read length
            assertEquals(0L, SMBUtil.readInt8(buffer, 8)); // Default offset
            assertEquals(0, SMBUtil.readInt4(buffer, 32)); // Default minimum count
            assertEquals(0, SMBUtil.readInt4(buffer, 36)); // Default channel
            assertEquals(0, SMBUtil.readInt4(buffer, 40)); // Default remaining bytes
        }

        @Test

       * ```
       */
      BODY,
    }

    fun interface Logger {
      fun log(message: String)

      companion object {
        /** A [Logger] defaults output appropriate for the current platform. */
        @JvmField
        val DEFAULT: Logger = DefaultLogger()

        private class DefaultLogger : Logger {
          override fun log(message: String) {
            Platform.get().log(message)
          }

      * if the new state is "partialDisruption" or "fullDisruption" we call a user defined function that returns a new QPS to use (default 1/10 of the default rate, and the default rate respectively),
      * if the new state is "normal" we resume normal operation (go back to default limiter settings),
      * if all zones in the cluster are in "fullDisruption" state we stop all evictions.

    public static final String INCLUDES_PROPERTY = "${includes}"; // includes

    public static final String OVERRIDE_PREFIX =
            "maven.override."; // prefix that marks that system property should override defaults.

    public static void loadProperties(
            java.util.Properties properties, Path path, UnaryOperator<String> callback, boolean escape)
            throws IOException {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private final MessageBuilderFactory messageBuilderFactory;

    /**
     * Default ctor is used in IT and most probably some 3rd party code. For those cases, we do provide sane defaults
     * but given this is a component, injection should be used, replacing direct instantiation.
     *

Então:

```Python
q: str | None = Query(default=None)
```

...torna o parâmetro opcional, com um valor padrão de `None`, o mesmo que:


```Python
q: str | None = None

     * list, the default property list, and its defaults, recursively, are then checked. The method returns the default
     * value argument if the property is not found.
     *
     * @param key the property key.
     * @param defaultValue a default value.
     * @return The property value of the default value
     */
    public String getProperty(String key, String defaultValue) {