L'avantage de lever une exception plutôt que de retourner une valeur apparaîtra plus clairement dans la section sur les Dépendances et la Sécurité.

Dans cet exemple, lorsque le client demande un élément par un ID qui n'existe pas, levez une exception avec un code d'état `404` :

 *     classes can be chained onto them without casting.
 * @param <G> The type of the generator to be passed to testers in the generated test suite. An
 *     instance of G should somehow provide an instance of the class under test, plus any other
 *     information required to parameterize the test.
 * @author George van den Driessche
 */
@GwtIncompatible
public abstract class FeatureSpecificTestSuiteBuilder<

      throw new AssertionError(e);
    }
  }

  private static @Nullable Field getInheritableThreadLocalsField() {
    if (isAndroid()) {
      /*
       * We need not worry about class unloading under Android. Plus, this approach doesn't always
       * work under Android.
       *
       * (Clearing inheritableThreadLocals could still be useful independent of class unloading, but

Mais lorsque le formulaire inclut des fichiers, il est encodé en `multipart/form-data`. Si vous utilisez `File`, **FastAPI** saura qu'il doit récupérer les fichiers depuis la partie appropriée du corps.

Si vous souhaitez en savoir plus sur ces encodages et les champs de formulaire, consultez la [<abbr title="Mozilla Developer Network - Réseau des développeurs Mozilla">MDN</abbr> Web Docs pour `POST`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST).

   * in <a href="http://www.ietf.org/rfc/rfc2181.txt">RFC 2181</a> part 11 with the fact that the
   * encoding of each part occupies at least two bytes (dot plus label externally, length byte plus
   * label internally). Thus, if all labels have the minimum size of one byte, 127 of them will fit.
   */
  private static final int MAX_PARTS = 127;

  /**

     * Handles encoding detection from parent URLs and configuration settings.
     *
     * @param url the URL to decode
     * @param escapePlus whether to escape plus signs before decoding
     * @return the decoded URL name, or original URL if decoding fails
     */
    default String decodeUrlAsName(final String url, final boolean escapePlus) {
        if (url == null) {

import com.google.errorprone.annotations.DoNotMock;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

/**
 * An object with an operational state, plus asynchronous {@link #startAsync()} and {@link
 * #stopAsync()} lifecycle methods to transition between states. Example services include
 * webservers, RPC servers and timers.
 *
 * <p>The normal lifecycle of a service is:
 *

   *       the same.
   *   <li>The special characters ".", "-", "*", and "_" remain the same.
   *   <li>The space character " " is converted into a plus sign "+".
   *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
   *       byte is then represented by the 3-character string "%XY", where "XY" is the two-digit,

Utilisez le paramètre `tags` avec vos *chemins d'accès* (et `APIRouter`s) pour les affecter à différents tags :

{* ../../docs_src/metadata/tutorial004_py310.py hl[21,26] *}

/// info

En savoir plus sur les tags dans [Configuration de chemins d'accès](path-operation-configuration.md#tags).

///

### Consultez les documents { #check-the-docs }

  }

  /**
   * Returns the result of adding this and {@code val}. If the result would have more than 32 bits,
   * returns the low 32 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedInteger plus(UnsignedInteger val) {
    return fromIntBits(this.value + checkNotNull(val).value);
  }

  /**
   * Returns the result of subtracting this and {@code val}. If the result would be negative,