assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        Iterator iter = set.iterator();
        assertTrue(set.size() == 4, "Set size should be 4, is " + set.size());

        while (iter.hasNext()) {
            Artifact artifact = (Artifact) iter.next();
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()

    /**
     * Creates an artifact.
     *
     * @param request the request holding artifact creation parameters
     * @return an {@code Artifact}, never {@code null}
     * @throws IllegalArgumentException if {@code request} is null or {@code request.session} is null or invalid
     */
    @Nonnull
    Artifact create(@Nonnull ArtifactFactoryRequest request);

    @Nonnull
    default Artifact create(

    /**
     * Retrieves the file system path associated with a specific artifact.
     *
     * @param artifact The {@link Artifact} whose path is to be retrieved.
     * @return The {@link Path} to the artifact, or {@code null} if unavailable.
     */
    @Nullable
    Path getPath(@Nonnull Artifact artifact);

    /**
     * Returns a mapping of artifact coordinates to their corresponding resolution results.
     *

import java.io.File;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.InvalidRepositoryException;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;

        checkScopeUpdate(Artifact.SCOPE_RUNTIME, Artifact.SCOPE_PROVIDED, Artifact.SCOPE_RUNTIME);
        checkScopeUpdate(Artifact.SCOPE_RUNTIME, Artifact.SCOPE_RUNTIME, Artifact.SCOPE_RUNTIME);
        checkScopeUpdate(Artifact.SCOPE_RUNTIME, Artifact.SCOPE_SYSTEM, Artifact.SCOPE_SYSTEM);
        checkScopeUpdate(Artifact.SCOPE_RUNTIME, Artifact.SCOPE_TEST, Artifact.SCOPE_RUNTIME);

        return Collections.emptyList();
    }

    @Override
    public Artifact transformArtifact(Artifact artifact) {
        return artifact;
    }

    @Override
    public Collection<? extends Metadata> finish(Collection<? extends Artifact> artifacts) {
        for (Artifact artifact : artifacts) {

                    "  ",
                    artifact.getGroupId(),
                    artifact.getArtifactId(),
                    artifact.getVersion(),
                    artifact.getType(),
                    artifact.getClassifier(),
                    artifact.getDownloadUrl(),
                    artifact.getDependencyTrail()));
        }

        buffer.append("----------").append(LS);

        Key(RepositorySystemSession session, VersionRequest request) {
            Artifact artifact = request.getArtifact();
            groupId = artifact.getGroupId();
            artifactId = artifact.getArtifactId();
            classifier = artifact.getClassifier();
            extension = artifact.getExtension();
            version = artifact.getVersion();
            localRepo = session.getLocalRepository().getBasePath();

        return fmt.format(date);
    }

    private static Metadata createMetadataFromArtifact(Artifact artifact) {
        Metadata metadata = new Metadata();
        metadata.setArtifactId(artifact.getArtifactId());
        metadata.setGroupId(artifact.getGroupId());
        metadata.setVersion(artifact.getVersion());
        metadata.setVersioning(new Versioning());
        return metadata;
    }

                + ":" + artifact.getArtifactId()
                + ":" + artifact.getArtifactHandler().getExtension()
                + (artifact.getClassifier() == null || artifact.getClassifier().isEmpty()
                        ? ""
                        : ":" + artifact.getClassifier())
                + ":" + artifact.getVersion();
    }

    private String id(Artifact artifact) {
        return artifact.key();
    }