* and downloads the artifact in the local repository.  This operation returns a {@link DownloadedArtifact}.
 * </p>
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Artifact {
    /**
     * {@return a unique identifier for this artifact}.
     * The identifier is composed of groupId, artifactId, extension, classifier, and version.
     *

        Artifact artifact = new Artifact("test", "1.0.0");
        assertEquals("test", artifact.getName());
        assertEquals("1.0.0", artifact.getVersion());
        assertNull(artifact.getUrl());
        assertEquals("test-1.0.0.jar", artifact.getFileName());
    }

    @Test
    public void test_Artifact_toString() {
        Artifact artifact = new Artifact("test", "1.0.0");

            LOGGER.error("Error while copying artifact " + artifact + " to project local repository.", e);
        }
    }

    private Path getArtifactPath(Artifact artifact) {
        String groupId = artifact.getGroupId();
        String artifactId = artifact.getArtifactId();
        String version = artifact.getBaseVersion();
        String classifier = artifact.getClassifier();

     *
     * @param artifact the artifact for which to get a local path
     * @return local path associated to the given artifact, or {@code null} if none
     *
     * @see org.apache.maven.api.services.LocalRepositoryManager#getPathForLocalArtifact(Session, LocalRepository, Artifact)
     */
    Path getPathForLocalArtifact(@Nonnull Artifact artifact);

    /**
     * Gets the relative path for an artifact cached from a remote repository.

    }

    /**
     * Installs a theme from the given artifact.
     * Extracts theme files from the JAR and deploys them to appropriate directories.
     *
     * @param artifact the theme artifact to install
     * @throws ThemeException if installation fails
     */
    public void install(final Artifact artifact) {
        final Path jarPath = getJarFile(artifact);
        final String themeName = getThemeName(artifact);

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

        result.setFile(artifact.getFile());

    }

    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);

            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);
                }
            }
        }

            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) {

     * Also removes any previously installed versions of the same plugin.
     *
     * @param artifact the artifact to install
     */
    public static void installArtifact(final Artifact artifact) {
        new Thread(() -> {
            final PluginHelper pluginHelper = ComponentUtil.getPluginHelper();
            final Artifact[] artifacts = pluginHelper.getInstalledArtifacts(artifact.getType());