@Nonnull
    List<Node> getChildren();

    /**
     * @return repositories of this node
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**
     * The repository where this artifact has been downloaded from.
     */
    @Nonnull
    Optional<RemoteRepository> getRepository();

    /**
     * Traverses this node and potentially its children using the specified visitor.
     *

        return artifact.getMetadataList();
    }

    /** {@inheritDoc} */
    @Override
    public void setRepository(ArtifactRepository remoteRepository) {
        artifact.setRepository(remoteRepository);
    }

    /** {@inheritDoc} */
    @Override
    public ArtifactRepository getRepository() {
        return artifact.getRepository();
    }

        Artifact l = createRemoteArtifact("l", "1.0-SNAPSHOT");
        deleteLocalArtifact(l);

        List<ArtifactRepository> repositories = new ArrayList<>();
        repositories.add(remoteRepository());
        repositories.add(badRemoteRepository());

        artifactResolver.resolve(l, repositories, localRepository());

        assertLocalArtifactPresent(l);
    }

    @Test

import java.util.stream.Stream;

import org.apache.maven.api.Language;
import org.apache.maven.api.ProducedArtifact;
import org.apache.maven.api.Project;
import org.apache.maven.api.ProjectScope;
import org.apache.maven.api.RemoteRepository;
import org.apache.maven.api.Service;
import org.apache.maven.api.Session;
import org.apache.maven.api.SourceRoot;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

        // metadata is added via addPluginArtifactMetadata
    }

    @Override
    public void transformForDeployment(
            Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository) {
        // metadata is added via addPluginArtifactMetadata
    }

    @Override
    protected String constructVersion(Versioning versioning, String baseVersion) {

 * <ul>
 *   <li>Access to the current {@link org.apache.maven.api.Project}</li>
 *   <li>Access to the {@link org.apache.maven.api.LocalRepository} and {@link org.apache.maven.api.RemoteRepository} configurations</li>
 *   <li>Access to Maven services through {@link org.apache.maven.api.Session#getService(Class)}</li>
 *   <li>Build configuration and settings</li>
 * </ul>
 *
 * <h3>Dependency management</h3>

        ArtifactMetadata metadata = createMetadata(artifact);

        artifact.addMetadata(metadata);
    }

    @Override
    public void transformForDeployment(
            Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository) {
        ArtifactMetadata metadata = createMetadata(artifact);

        artifact.addMetadata(metadata);
    }

    private ArtifactMetadata createMetadata(Artifact artifact) {

            throws RepositoryMetadataResolutionException;

    void resolveAlways(
            RepositoryMetadata metadata, ArtifactRepository localRepository, ArtifactRepository remoteRepository)
            throws RepositoryMetadataResolutionException;

    /**
     * Deploy metadata to the remote repository.
     *
     * @param metadata             the metadata to deploy

    @Override
    List<ArtifactVersion> retrieveAvailableVersionsFromDeploymentRepository(
            Artifact artifact, ArtifactRepository localRepository, ArtifactRepository remoteRepository)
            throws ArtifactMetadataRetrievalException;

    }

    @Override
    public List<ArtifactVersion> retrieveAvailableVersionsFromDeploymentRepository(
            Artifact artifact, ArtifactRepository localRepository, ArtifactRepository remoteRepository) {
        return Collections.singletonList(new DefaultArtifactVersion("10.1.3"));
    }

    @Override
    public ResolutionGroup retrieve(MetadataResolutionRequest request) {