* {@link ByteStreams} method returns a singleton stream whose {@code close} method has no effect,
   * while the {@link OutputStream} method returns a new instance whose {@code write} methods throw
   * if called on a closed stream.
   *
   * @since 14.0 (since 1.0 as com.google.common.io.NullOutputStream)
   */
  public static OutputStream nullOutputStream() {

  //
  // 1. What about leaving/unlocking? Are you going to do
  //    guard.enter() paired with monitor.leave()? That might get
  //    confusing. It's nice for the finally block to look as close as
  //    possible to the thing right before the try. You could have
  //    guard.leave(), but that's a little odd as well because the
  //    guard doesn't have anything to do with leaving. You can't

Pero cuando importas `Query`, `Path`, `Depends`, `Security` y otros de `fastapi`, en realidad son funciones que devuelven clases especiales.

///

## Usar `SecurityScopes`

Ahora actualiza la dependencia `get_current_user`.

Esta es la que usan las dependencias anteriores.

Pero fue creado antes de que existieran las anotaciones de tipos en Python. Así que, para definir cada <abbr title="la definición de cómo deberían formarse los datos">esquema</abbr> necesitas usar utilidades y clases específicas proporcionadas por Marshmallow.

/// check | Inspiró a **FastAPI** a

Usar código para definir "esquemas" que proporcionen tipos de datos y validación automáticamente.

///

	}

	return fi.ToObjectInfo(srcBucket, srcObject, srcOpts.Versioned || srcOpts.VersionSuspended), nil
}

// GetObjectNInfo - returns object info and an object
// Read(Closer). When err != nil, the returned reader is always nil.
func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, opts ObjectOptions) (gr *GetObjectReader, err error) {

   * Builder#build} is called, the builder is likely to perform better than an unsized {@link
   * #builder()} would have.
   *
   * <p>It is not specified if any performance benefits apply if {@code expectedSize} is close to,
   * but not exactly, the number of entries added to the builder.
   *
   * @since 23.1
   */
  public static <K, V> Builder<K, V> builderWithExpectedSize(int expectedSize) {

	}
	defer contentReader.Close()

	expContent, err := io.ReadAll(contentReader)
	if err != nil {
		c.Fatalf("export %d: Unable to read exported content: %v", caseNum, err)
	}

	return expContent
}

type dummyCloser struct {
	io.Reader
}

func (d dummyCloser) Close() error { return nil }

			})
			replLogOnceIf(ctx, fmt.Errorf("unable to read source object %s/%s(%s): %w", bucket, object, objInfo.VersionID, err), object+":"+objInfo.VersionID)
		}
		return
	}
	defer gr.Close()

	objInfo := gr.ObjInfo

	// make sure we have the latest metadata for metrics calculation
	rinfo.PrevReplicationStatus = objInfo.TargetReplicationStatus(tgt.ARN)

L'idée de code **asynchrone** décrite ci-dessus est parfois aussi appelée **"concurrence"**. Ce qui est différent du **"parallélisme"**.

La **concurrence** et le **parallélisme** sont tous deux liés à l'idée de "différentes choses arrivant plus ou moins au même moment".

Mais les détails entre la **concurrence** et le **parallélisme** diffèrent sur de nombreux points.

Pour expliquer la différence, voici une histoire de burgers :

                        try {
                            token = nctx.initSecContext(token, 0, token.length);
                        } catch (final SmbException se) {
                            /* We must close the transport or the server will be expecting a
                             * Type3Message. Otherwise, when we send a Type1Message it will return
                             * "Invalid parameter".
                             */