async def read_items():
    return [{"name": "Foo", "price": 42}]


@app.get("/users/", tags=["users"])
async def read_users():
    return [{"username": "johndoe"}]


@app.get("/elements/", tags=["items"], deprecated=True)
async def read_elements():

## Déprécier des paramètres { #deprecating-parameters }

Disons que vous n’aimez plus ce paramètre.

Vous devez le laisser là quelque temps car des clients l’utilisent, mais vous voulez que les documents l’affichent clairement comme <dfn title="obsolète, il est recommandé de ne pas l’utiliser">déprécié</dfn>.

Passez alors le paramètre `deprecated=True` à `Query` :

     * @throws DuplicateProjectException
     * @throws CycleDetectedException
     * @since 3.5.0
     * @deprecated Use {@link #DefaultProjectDependencyGraph(Collection, Collection)} instead.
     */
    @Deprecated
    public DefaultProjectDependencyGraph(List<MavenProject> allProjects, Collection<MavenProject> projects)
            throws CycleDetectedException, DuplicateProjectException {

import org.apache.maven.model.merge.MavenModelMerger;

/**
 * Handles profile injection into the model.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
@SuppressWarnings({"checkstyle:methodname"})
public class DefaultProfileInjector implements ProfileInjector {

     *
     * @return The resolved instance of the inbound Model. This is a different instance!
     *
     * @deprecated Use {@link ModelInterpolator#interpolate(Model, File, ProjectBuilderConfiguration, boolean)} instead.
     */
    @Deprecated
    @Override
    public Model interpolate(Model model, Map<String, ?> context, boolean strict) throws ModelInterpolationException {

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.metadata.RepositoryMetadata;

/**
 * UpdateCheckManager
 */
@Deprecated
public interface UpdateCheckManager {

    boolean isUpdateRequired(Artifact artifact, ArtifactRepository repository);

    void touch(Artifact artifact, ArtifactRepository repository, String error);

import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

/**
 * ResolutionGroup
 */
@Deprecated
public class ResolutionGroup extends org.apache.maven.repository.legacy.metadata.ResolutionGroup {

    public ResolutionGroup(

 * under the License.
 */
package org.apache.maven.settings;

import java.io.File;

/**
 * To handle runtime informations like local repository or profiles.
 *
 */
@Deprecated
public class RuntimeInfo {
    @SuppressWarnings("checkstyle:constantname")
    public static final String userHome = System.getProperty("user.home");

    @SuppressWarnings("checkstyle:constantname")

## Declarar parámetros obsoletos { #deprecating-parameters }

Ahora digamos que ya no te gusta este parámetro.

Tienes que dejarlo allí por un tiempo porque hay clientes usándolo, pero quieres que la documentación lo muestre claramente como <dfn title="obsoleto, se recomienda no usarlo">obsoleto</dfn>.

Luego pasa el parámetro `deprecated=True` a `Query`:

      return new ImmutableSet[length];
    }
  }

  /**
   * Useless constructor for a class of static utility methods.
   *
   * @deprecated Do not instantiate this utility class.
   */
  @Deprecated
  public MapGenerators() {}