{* ../../docs_src/dataclasses_/tutorial002_py310.py hl[1,6:12,18] *}

A dataclass será automaticamente convertida para uma dataclass Pydantic.

Dessa forma, seu esquema aparecerá na interface de documentação da API:

<img src="/img/tutorial/dataclasses/image01.png">

## Dataclasses em Estruturas de Dados Aninhadas { #dataclasses-in-nested-data-structures }

En esta sección veremos cómo usar otros middlewares.

## Agregando middlewares ASGI { #adding-asgi-middlewares }

Como **FastAPI** está basado en Starlette e implementa la especificación <abbr title="Asynchronous Server Gateway Interface – Interfaz de puerta de enlace de servidor asíncrona">ASGI</abbr>, puedes usar cualquier middleware ASGI.

Un middleware no tiene que estar hecho para FastAPI o Starlette para funcionar, siempre que siga la especificación ASGI.

import static java.util.Objects.requireNonNull;

/**
 * Represents a request to parse Maven command-line arguments.
 * This interface encapsulates all the necessary information needed to parse
 * Maven commands and arguments into an {@link InvokerRequest}.
 *
 * @since 4.0.0
 */
@Immutable
@Experimental
public interface ParserRequest {
    /**

	if err != nil {
		logger.FatalIf(err, "Unable to split host port %s", hostPort)
	}
	return xh.Name, xh.Port.String()
}

// mustGetLocalIPs returns IPs of local interface
func mustGetLocalIPs() (ipList []net.IP) {
	ifs, err := net.Interfaces()
	logger.FatalIf(err, "Unable to get IP addresses of this host")

	for _, interf := range ifs {
		addrs, err := interf.Addrs()
		if err != nil {
			continue
		}

import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.project.MavenProject;

/**
 * Lifecycle mapping delegate component interface. Calculates project build execution plan given {@link Lifecycle} and
 * lifecycle phase. Standard lifecycles use plugin execution {@code <phase>} or mojo default lifecycle phase to

import org.eclipse.aether.RepositorySystemSession;

/**
 * @since 3.0-alpha
 * @deprecated Use {@link MavenRepositorySystem} if needed, or maven-resolver directly, until maven 4.x api is out
 */
@Deprecated
public interface RepositorySystem {
    String DEFAULT_LOCAL_REPO_ID = MavenRepositorySystem.DEFAULT_LOCAL_REPO_ID;

    @SuppressWarnings("checkstyle:constantname")
    String userHome = System.getProperty("user.home");

import org.apache.maven.api.annotations.Nullable;

import static java.util.Objects.requireNonNull;

/**
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface DependencyCoordinatesFactoryRequest extends ArtifactCoordinatesFactoryRequest {

    String getScope();

    boolean isOptional();

    @Nonnull
    Collection<Exclusion> getExclusions();

    @Nonnull

import org.eclipse.aether.RepositorySystemSession;

/**
 * ProjectBuildingRequest
 *
 * @deprecated use {@code org.apache.maven.api.services.ProjectBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ProjectBuildingRequest {

    ProjectBuildingRequest setLocalRepository(ArtifactRepository localRepository);

    ArtifactRepository getLocalRepository();

 * It allows for the replacement of placeholders (e.g., ${variable}) with their corresponding values.
 *
 * @since 4.0.0
 */
@Experimental
public interface Interpolator extends Service {

    /**
     * Interpolates the values in the given map using the provided callback function.
     * This method defaults to setting empty strings for unresolved placeholders.
     *

import org.apache.maven.api.Constants;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Message builder that supports configurable styling.
 *
 * @since 4.0.0
 * @see MessageBuilderFactory
 */
public interface MessageBuilder extends Appendable {

    /**
     * Append message content in trace style.
     * By default, bold magenta
     *
     * @param message the message to append
     * @return the current builder