Artifact artifact = new DefaultArtifact(
                groupId, artifactId, VersionRange.createFromVersion("5.0"), scope, type, classifier, artifactHandler);
        assertTrue(artifact.compareTo(artifact1) == 0);
        assertTrue(artifact1.compareTo(artifact) == 0);
    }

    @Test
    void testNonResolvedVersionRangeConsistentlyYieldsNullVersions() throws Exception {

        Artifact artifact2 = mock(Artifact.class);
        when(artifact2.getFile()).thenReturn(null);
        when(artifact2.getGroupId()).thenReturn("group1");
        when(artifact2.getArtifactId()).thenReturn("artifact2");
        when(artifact2.getExtension()).thenReturn("ext");
        when(artifact2.getClassifier()).thenReturn("classifier1");
        when(artifact2.getVersion()).thenReturn("1");
        artifacts.add(artifact2);

    }

    public static Map<String, Artifact> artifactMapByVersionlessId(Collection<Artifact> artifacts) {
        Map<String, Artifact> artifactMap = new LinkedHashMap<>();

        if (artifacts != null) {
            for (Artifact artifact : artifacts) {
                artifactMap.put(versionlessKey(artifact), artifact);
            }
        }

        return artifactMap;
    }

     * @param artifact the artifact for which to get a path
     * @return path associated to the given artifact
     *
     * @see org.apache.maven.api.services.ArtifactManager#getPath(Artifact)
     */
    @Nonnull
    Optional<Path> getArtifactPath(@Nonnull Artifact artifact);

    /**
     * Gets the relative path for a locally installed artifact. Note that the artifact need not actually exist yet at

        String groupId = artifact.getGroupId();
        String artifactId = artifact.getArtifactId();
        String version = artifact.getBaseVersion();
        String classifier = artifact.getClassifier();
        String extension = artifact.getExtension();
        Path repo = getProjectLocalRepo();
        return repo.resolve(groupId)
                .resolve(artifactId)

    }

    /**
     * The groupId of the artifact.
     *
     * @return the groupId
     */
    @Nonnull
    String getGroupId();

    /**
     * The artifactId of the artifact.
     *
     * @return the artifactId
     */
    @Nonnull
    String getArtifactId();

    /**
     * The version of the artifact.
     *
     * @return the version
     */
    @Nonnull

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.artifact.factory.ArtifactFactory;
import org.apache.maven.artifact.handler.ArtifactHandler;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.filter.ArtifactFilter;

        return Metadata.newBuilder()
                .modelVersion("1.1.0")
                .groupId(artifact.getGroupId())
                .artifactId(artifact.getArtifactId())
                .version(artifact.getBaseVersion())
                .build();
    }

    public void bind(Artifact artifact) {
        artifacts.add(artifact);
    }

    public Object getKey() {

        Map artifactMap = project.getArtifactMap();

        assertNotNull( artifactMap, "artifact-map should not be null." );
        assertEquals( 1, artifactMap.size(), "artifact-map should contain 1 element." );

        Artifact artifact = (Artifact) artifactMap.get( key );

        assertNotNull( artifact, "dependency artifact not found in map." );

            @Nonnull Session session, @Nonnull RemoteRepository repository, @Nonnull Collection<Artifact> artifacts) {
        return builder()
                .session(nonNull(session, "session cannot be null"))
                .repository(nonNull(repository, "repository cannot be null"))
                .artifacts(nonNull(artifacts, "artifacts cannot be null"))
                .build();
    }

    class ArtifactDeployerRequestBuilder {