* This interface provides common functionality for requests that need to specify
 * and validate remote repositories for artifact resolution, dependency collection,
 * model building, and other Maven operations.
 *
 * <p>Implementations of this interface can specify a list of remote repositories
 * to be used during the operation. If no repositories are specified (null),

    public Collection<ToolchainModel> getToolchains() {
        return getMavenSession().getRequest().getToolchains().values().stream()
                .flatMap(Collection::stream)
                .map(org.apache.maven.toolchain.model.ToolchainModel::getDelegate)
                .toList();
    }

    @Nonnull
    @Override
    public Map<String, String> getUserProperties() {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import java.util.List;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.project.MavenProject;
import org.eclipse.aether.RepositorySystemSession;

        MavenProject p1 = new MavenProject();
        p1.setGroupId("g");
        p1.setArtifactId("p1");
        p1.getBuild().getPlugins().add(new Plugin(org.apache.maven.api.model.Plugin.newBuilder()
                .groupId("g").artifactId("p2")
                .
                .build()))
        MavenProject p2 = new MavenProject();
        p2.setGroupId("g");

    * Convert Python types (`str`, `int`, `float`, `bool`, `list`, etc).
    * `datetime` objects.
    * `UUID` objects.
    * Database models.
    * ...and many more.
* Automatic interactive API documentation, including 2 alternative user interfaces:
    * Swagger UI.
    * ReDoc.

---

Coming back to the previous code example, **FastAPI** will:

Wenn Sie diese Sichtweise (des *externen Entwicklers*) vorübergehend übernehmen, wird es offensichtlicher, wo die Parameter, das Pydantic-Modell für den Body, die Response, usw. für diese *externe API* hingehören.

///

### Einen Callback-`APIRouter` erstellen { #create-a-callback-apirouter }

Perceba que isso significa que "`one_person` é uma **instância** da classe `Person`".

Isso não significa que "`one_person` é a **classe** chamada `Person`".

## Modelos Pydantic { #pydantic-models }

O <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> é uma biblioteca Python para executar a validação de dados.

Você declara a "forma" dos dados como classes com atributos.

<img src="/img/python-types/image06.png">

Nota que esto significa "`one_person` es una **instance** de la clase `Person`".

No significa "`one_person` es la **clase** llamada `Person`".

## Modelos Pydantic { #pydantic-models }

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> es un paquete de Python para realizar la validación de datos.

Declaras la "forma" de los datos como clases con atributos.

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.profile;

import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import static java.util.stream.Collectors.collectingAndThen;

            return null;
        }
    }

    /**
     * Implementation of {@link ModelSource} that extends {@link PathSource} with model-specific
     * functionality. This implementation uses request-scoped caching ({@link CacheRetention#REQUEST_SCOPED})
     * since it represents a POM file that is actively being built and may change during the build process.