Assim como quando declaramos parâmetros de consulta, quando um atributo do modelo possui um valor padrão, ele se torna opcional. Caso contrário, se torna obrigatório. Use `None` para torná-lo opcional.

Por exemplo, o modelo acima declara um JSON "`object`" (ou `dict` no Python) como esse:

```JSON
{
    "name": "Foo",
    "description": "Uma descrição opcional",
    "price": 45.2,
    "tax": 3.5
}
```

     *
     * Expected outputs are generated by the code itself, but they've been
     * checked against the inputs under Bash in order to confirm that the two
     * forms are equivalent (though not necessarily minimal, though we hope this
     * to be the case). Thus, this test is more of a regression test.
     *
     * Rough instructions to regenerate the test outputs and verify correctness:
     * - Temporarily change this test:

# Serverworker – Gunicorn mit Uvicorn

Schauen wir uns die Deployment-Konzepte von früher noch einmal an:

* Sicherheit – HTTPS
* Beim Hochfahren ausführen
* Neustarts
* **Replikation (die Anzahl der laufenden Prozesse)**
* Arbeitsspeicher
* Schritte vor dem Start

Bis zu diesem Punkt, in allen Tutorials in der Dokumentation, haben Sie wahrscheinlich ein **Serverprogramm** wie Uvicorn ausgeführt, in einem **einzelnen Prozess**.

Você pode aprender mais sobre **GraphQL** na <a href="https://graphql.org/" class="external-link" target="_blank">documentação oficial do GraphQL</a>.

        DcerpcHandle handle = mock(DcerpcHandle.class);
        LsaPolicyHandle policy = mock(LsaPolicyHandle.class);

        jcifs.SID[] sids = new jcifs.SID[] { sid("S-1-1-0") };

        // Arrange a minimal response with given retval
        doAnswer(inv -> {
            jcifs.dcerpc.msrpc.MsrpcLookupSids rpc = inv.getArgument(0);
            rpc.retval = ret;
            // Provide empty arrays to satisfy code paths

            assertNotNull(fileFsSizeInfo.getFree());
        }

        @ParameterizedTest
        @DisplayName("Should decode various sector and allocation configurations")
        @CsvSource({ "1000, 500, 1, 512", // Minimal sectors per alloc
                "1000, 500, 8, 512", // Typical configuration
                "1000, 500, 64, 512", // Large allocation units
                "1000, 500, 8, 4096", // 4K sectors

w","hide"],function(e,r){var i=ce.fn[r];ce.fn[r]=function(e,t,n){return null==e||"boolean"==typeof e?i.apply(this,arguments):this.animate(gt(r,!0),e,t,n)}}),ce.each({slideDown:gt("show"),slideUp:gt("hide"),slideToggle:gt("toggle"),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"},fadeToggle:{opacity:"toggle"}},function(e,r){ce.fn[e]=function(e,t,n){return this.animate(r,e,t,n)}}),ce.timers=[],ce.fx.tick=function(){var e,t=0,n=ce.timers;for(st=Date.now();t<n.length;t++)(e=n[t])()||n[t]!==e||n.spli...

That will raise the `WebSocketDisconnect` exception, and all the other clients will receive a message like:

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

/// tip

The app above is a minimal and simple example to demonstrate how to handle and broadcast messages to several WebSocket connections.

        void dispose_nullContext_noop() throws Exception {
            setPrivateField(ctx, "gssContext", null);
            assertDoesNotThrow(() -> ctx.dispose());
        }
    }

    // Helper to build a minimal exported name token understood by MIEName(byte[])
    // Format: TOK_ID(2 bytes) | OID_LEN(2 bytes) | OID_DER | NAME_LEN(4 bytes) | NAME(bytes)
    private static byte[] buildExportName(Oid mech, String name) throws GSSException {

// golang's map orders keys. This doesn't affect correctness as long as quorum
// value is greater than or equal to simple majority, since none of the equally
// maximal values would occur quorum or more number of times.
func reduceErrs(errs []error, ignoredErrs []error) (maxCount int, maxErr error) {
	errorCounts := make(map[error]int)
	for _, err := range errs {