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///

## Argumentos adicionales en `Field` { #field-additional-arguments }

Cuando usas `Field()` con modelos de Pydantic, también puedes declarar `examples` adicionales:

{* ../../docs_src/schema_extra_example/tutorial002_py310.py hl[2,8:11] *}

    @Mock
    private InputStream mockInputStream;

    @Test
    void constructorShouldInitializeTypeAndLength() {
        // Test that the constructor correctly initializes the type and length fields.
        SessionRetargetResponsePacket packet = new SessionRetargetResponsePacket();
        assertEquals(SessionServicePacket.SESSION_RETARGET_RESPONSE, packet.type);
        assertEquals(6, packet.length);
    }

			field.IgnoreMigration = true
		case "migration":
			field.IgnoreMigration = true
		}
	}

	if v, ok := field.TagSettings["->"]; ok {
		field.Creatable = false
		field.Updatable = false
		if strings.ToLower(v) == "false" {
			field.Readable = false
		} else {
			field.Readable = true
		}
	}

	if v, ok := field.TagSettings["<-"]; ok {
		field.Creatable = true
		field.Updatable = true

     */
    public String errorLog;

    /**
     * The number of times this URL has failed.
     * This is a required field that tracks repeated failures for the same URL.
     */
    @Required
    @ValidateTypeFailure
    public String errorCount;

    /**
     * The timestamp of the last access attempt for this URL.

 *         <li>LangAnalyzerConverter#convert(String, String, String...): Converts the given text using the specified field and language.</li>
 *       </ul>
 *   </li>
 * </ul>
 *
 * <p>Fields:
 * <ul>
 *   <li>{@link #client}: The client used to perform analysis.</li>
 *   <li>{@link #settings}: The settings for suggestions.</li>

                                    </la:info>
                                    <la:errors/>
                                </div>
                                    <%-- Form Fields --%>
                                <table class="table table-bordered" aria-label="<la:message key="labels.duplicate_host_details" />">
                                    <tbody>
                                    <tr>

Você pode verificar na UI de documentação em `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Proibir Campos Extras de Formulários { #forbid-extra-form-fields }

Em alguns casos de uso especiais (provavelmente não muito comum), você pode desejar **restringir** os campos do formulário para aceitar apenas os declarados no modelo Pydantic. E **proibir** qualquer campo **extra**.

            return buildDefaultQueryBuilder(fessConfig, context, (f, b) -> QueryBuilders.matchPhraseQuery(f, origQuery).boost(b));
        }

        context.addFieldLog(field, termRangeQuery.toString(field));
        final RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery(field);
        final BytesRef min = termRangeQuery.getLowerTerm();
        if (min != null) {
            if (termRangeQuery.includesLower()) {

	if err != nil {
		t.Fatalf("%v: %v\n%s", cmd, err, string(out))
	}
	syms := make(map[string]string)
	scanner := bufio.NewScanner(bytes.NewReader(out))
	for scanner.Scan() {
		f := strings.Fields(scanner.Text())
		if len(f) < 3 {
			continue
		}
		syms[f[2]] = f[0]
	}
	if err := scanner.Err(); err != nil {
		t.Fatalf("error reading symbols: %v", err)
	}
	return syms
}

        SMBUtil.writeInt4(contextStartOffsetFromHeader, base, offsetFieldPos);
        SMBUtil.writeInt4(ctx.length, base, offsetFieldPos + 4);

        // Assemble full body: base (fixed-size fields only), but actual context bytes sit elsewhere in the full packet
        // Return just the base; caller is responsible for placing ctx at the correct absolute offset.