artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                null,
                artifact.getProperty(ArtifactProperties.TYPE, artifact.getExtension()),
                nullify(artifact.getClassifier()),
                handler);

        result.setFile(artifact.getFile());

    }

    /**
     * Gets the artifacts that make up the plugin's class realm, excluding artifacts shadowed by the Maven core realm
     * like {@code maven-project}.
     *
     * @return The plugin artifacts, never {@code null}.
     */
    public List<Artifact> getArtifacts() {
        return artifacts;
    }

    public void setArtifacts(List<Artifact> artifacts) {
        this.artifacts = artifacts;

        snapshots = new LinkedHashMap<>();
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        for (Artifact artifact : artifacts) {
            if (artifact.isSnapshot()) {
                Object key = LocalSnapshotMetadata.getKey(artifact);
                LocalSnapshotMetadata snapshotMetadata = snapshots.get(key);
                if (snapshotMetadata == null) {

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.InvalidRepositoryException;
import org.apache.maven.artifact.factory.ArtifactFactory;
import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.metadata.ResolutionGroup;
import org.apache.maven.artifact.repository.ArtifactRepository;

        List<Artifact> artifacts = (List<Artifact>) value;

        assertEquals(1, artifacts.size());

        Artifact result = artifacts.get(0);

        assertEquals("testGroup", result.getGroupId());
    }

    @Test
    void testRootDirectoryNotPrefixed() throws Exception {
        ExpressionEvaluator ee = createExpressionEvaluator(createDefaultProject(), null, new Properties());

                artifact.getType(),
                artifact.getClassifier(),
                remoteRepositories,
                artifact.getDependencyTrail(),
                t);
        this.artifact = artifact;
    }

    public Artifact getArtifact() {
        return artifact;
    }

    public String getGroupId() {
        return groupId;
    }

    }

    File getTouchfile(Artifact artifact) {
        StringBuilder sb = new StringBuilder(128);
        sb.append(artifact.getArtifactId());
        sb.append('-').append(artifact.getBaseVersion());
        if (artifact.getClassifier() != null) {
            sb.append('-').append(artifact.getClassifier());
        }
        sb.append('.').append(artifact.getType()).append(LAST_UPDATE_TAG);

            ComponentUtil.getThemeHelper().install(artifact);
            break;
        default:
            install(artifact);
            break;
        }
    }

    /**
     * Installs an artifact by downloading it from its URL.
     *
     * @param artifact the artifact to install
     * @throws PluginException if installation fails
     */
    protected void install(final Artifact artifact) {

    public ResolutionGroup(
            Artifact pomArtifact, Set<Artifact> artifacts, List<ArtifactRepository> resolutionRepositories) {
        super(pomArtifact, artifacts, resolutionRepositories);
    }

    public ResolutionGroup(
            Artifact pomArtifact,
            Artifact relocatedArtifact,
            Set<Artifact> artifacts,
            Map<String, Artifact> managedVersions,

            if ("pom".equals(artifact.getExtension()) || artifact.getExtension().startsWith("pom.")) {
                if (CONSUMER_POM_CLASSIFIER.equals(artifact.getClassifier())) {
                    consumers.add(artifact);
                } else if ("".equals(artifact.getClassifier())) {
                    mains.add(artifact);
                }
            }
        }