* @return this {@code CacheBuilder} instance (for chaining)
   * @throws IllegalStateException if a weigher was already set or {@link #maximumSize(long)} was
   *     previously called
   * @since 11.0
   */
  @GwtIncompatible // To be supported
  @CanIgnoreReturnValue // TODO(b/27479612): consider removing this
  public <K1 extends K, V1 extends V> CacheBuilder<K1, V1> weigher(

    assert200Http2Response(execute(sanUrl), "san.com")
    assert200Http2Response(execute(url), server.hostName)
    assertThat(client.connectionPool.connectionCount()).isEqualTo(1)
  }

  /** Test a previously coalesced connection that's no longer healthy.  */
  @Test
  fun staleCoalescedConnection() {
    server.enqueue(MockResponse())
    server.enqueue(MockResponse())
    val connection = AtomicReference<Connection?>()

Pero antes de eso, manejar el código asíncrono era mucho más complejo y difícil.

En versiones previas de Python, podrías haber usado hilos o <a href="https://www.gevent.org/" class="external-link" target="_blank">Gevent</a>. Pero el código es mucho más complejo de entender, depurar y razonar.

En versiones previas de NodeJS / JavaScript en el Navegador, habrías usado "callbacks". Lo que lleva al "callback hell".

## Coroutines

---

"_Nós adotamos a biblioteca **FastAPI** para iniciar um servidor **REST** que pode ser consultado para obter **previsões**. [para o Ludwig]_"

   *         .build();
   * }
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple multimaps in series. Each multimap contains the key-value mappings in the previously
   * created multimaps.
   *
   * @since 2.0
   */
  public static final class Builder<K, V> extends ImmutableMultimap.Builder<K, V> {
    /**

   *         .build();
   * }
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple multimaps in series. Each multimap contains the key-value mappings in the previously
   * created multimaps.
   *
   * @since 2.0
   */
  public static final class Builder<K, V> extends ImmutableMultimap.Builder<K, V> {
    /**

   *
   * <p>If {@code values} is empty, this is equivalent to {@link #removeAll(Object) removeAll(key)}.
   *
   * @return the collection of replaced values, or an empty collection if no values were previously
   *     associated with the key. The collection <i>may</i> be modifiable, but updating it will have
   *     no effect on the multimap.
   */
  @CanIgnoreReturnValue

		{"myobject", nil},
		{"path/to/my/object", nil},
		// TestXLStorage to append to previously created file.
		{"myobject", nil},
		// TestXLStorage to use same path of previously created file.
		{"path/to/my/testobject", nil},
		// TestXLStorage to use object is a directory now.
		{"object-as-dir", errIsNotRegular},
		// path segment uses previously uploaded object.
		{"myobject/testobject", errFileAccessDenied},

		if mtimeValid || etagOnly {
			fmt.Fprintf(h, "%v", meta.XLV1)
			for _, part := range meta.Parts {
				fmt.Fprintf(h, "part.%d", part.Number)
				fmt.Fprintf(h, "part.%d", part.Size)
			}
			// Previously we checked if we had quorum on DataDir value.
			// We have removed this check to allow reading objects with different DataDir
			// values in a few drives (due to a rebalance-stop race bug)

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## Opinions

"_[...] J'utilise beaucoup **FastAPI** ces derniers temps. [...] Je prévois de l'utiliser dans mon équipe pour tous les **services de ML chez Microsoft**. Certains d'entre eux seront intégrés dans le coeur de **Windows** et dans certains produits **Office**._"