/// info

À moins que vous ne spécifiiez explicitement un type de média différent dans votre paramètre `responses`, FastAPI supposera que la réponse a le même type de média que la classe de réponse principale (par défaut `application/json`).

Mais si vous avez spécifié une classe de réponse personnalisée avec `None` comme type de média, FastAPI utilisera `application/json` pour toute réponse supplémentaire associée à un modèle.

///

        if (obj == null) {
            enc_ndr_long(0);
            return;
        }
        switch (type) {
        case 1: /* unique */
        case 3: /* ref */
            enc_ndr_long(System.identityHashCode(obj));
            return;
        case 2: /* ptr */
            enc_ndr_long(getDceReferent(obj));
        }
    }

    @Override
    public String toString() {

		b, _, minor, e := checkXL2V1(b)
		if e != nil {
			return nil, e
		}

		buf := bytes.NewBuffer(nil)
		var data xlMetaInlineData
		switch minor {
		case 0:
			_, e = msgp.CopyToJSON(buf, bytes.NewReader(b))
			if e != nil {
				return nil, e
			}
		case 1, 2:
			v, b, e := msgp.ReadBytesZC(b)
			if e != nil {
				return nil, e
			}
			if _, nbuf, e := msgp.ReadUint32Bytes(b); e == nil {

					switch name {
					case "Name":
						if _, ok := first[dbName].(string); !ok {
							t.Errorf("invalid data type for %v, got %#v", dbName, first[dbName])
						}
					case "Age":
						if _, ok := first[dbName].(uint); !ok {
							t.Errorf("invalid data type for %v, got %#v", dbName, first[dbName])
						}
					case "Birthday":
						if _, ok := first[dbName].(*time.Time); !ok {

	id := mustGetRequestID(UTCNow())

	if len(id) != 16 {
		t.Fail()
	}

	var e rune
	for _, char := range id {
		e = char

		// Ensure that it is alphanumeric, in this case, between 0-9 and A-Z.
		isAlnum := ('0' <= e && e <= '9') || ('A' <= e && e <= 'Z')
		if !isAlnum {
			t.Fail()
		}
	}

In the next sections you will see other options, configurations, and additional features.

/// tip

The next sections are **not necessarily "advanced"**.

And it's possible that for your use case, the solution is in one of them.

///

## Read the Tutorial first { #read-the-tutorial-first }

    assertFalse(
        "after removeAll(e), a collection should not contain e even "
            + "if it initially contained e more than once.",
        getList().contains(duplicate));
  }

  // All other cases are covered by CollectionRemoveAllTester.

import org.apache.maven.wagon.events.TransferListener;
import org.apache.maven.wagon.providers.file.FileWagon;
import org.apache.maven.wagon.resource.Resource;

/**
 * Wagon used for test cases that annotate some methods. Note that this is not a thread-safe implementation.
 */
public class TestFileWagon extends FileWagon {
    private TestTransferListener testTransferListener;
    private boolean insideGet;

public class ToolchainsBuildingException extends Exception {

    private final List<Problem> problems;

    /**
     * Creates a new exception with the specified problems.
     *
     * @param problems The problems that cause this exception, must not be {@code null}.
     */
    public ToolchainsBuildingException(List<Problem> problems) {
        super(toMessage(problems));

        this.problems = new ArrayList<>();

Você também pode adicionar cabeçalhos quando retornar uma `Response` diretamente.

Crie uma resposta conforme descrito em [Retornar uma resposta diretamente](response-directly.md){.internal-link target=_blank} e passe os cabeçalhos como um parâmetro adicional:

{* ../../docs_src/response_headers/tutorial001_py39.py hl[10:12] *}

/// note | Detalhes Técnicos