}
    }

    public Object getKey() {
        return getGroupId() + ':' + getArtifactId();
    }

    public static Object getKey(Artifact artifact) {
        return artifact.getGroupId() + ':' + artifact.getArtifactId();
    }

    @Deprecated
    @Override
    public MavenMetadata setFile(File file) {

                        original,
                        isAny(relocation.target.getGroupId()) ? null : relocation.target.getGroupId(),
                        isAny(relocation.target.getArtifactId()) ? null : relocation.target.getArtifactId(),
                        isAny(relocation.target.getClassifier()) ? null : relocation.target.getClassifier(),

    transient Object datum;

    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }

    public String getArtifactId() {
        return artifactId;
    }

    public void setArtifactId(String artifactId) {
        this.artifactId = artifactId;
    }

    public String getVersion() {
        return version;
    }

 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactCoordinatesFactoryRequest {

    @Nonnull
    Session getSession();

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    String getCoordinatesString();

    @Nonnull

    }

    public ArtifactNotFoundException(String message, Artifact artifact) {
        this(
                message,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),
                artifact.getClassifier(),
                null,
                artifact.getDownloadUrl(),

    }

    private CoreExtensionEntry createExtension(CoreExtension extension, List<Artifact> artifacts) throws Exception {
        String realmId = "coreExtension>" + extension.getGroupId() + ":" + extension.getArtifactId() + ":"
                + extension.getVersion();
        final ClassRealm realm = classWorld.newRealm(realmId, null);
        Set<String> providedArtifacts = Collections.emptySet();

            throws ArtifactMetadataRetrievalException {
        Set<Artifact> dependencies = new HashSet<>();

        if ("g".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {
                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {

            for (Dependency dep : getDependencies()) {
                ret.put(dep.getArtifactId(), dep);
            }
            return ret;
        }

        // ${project.artifactMap(g:a:v)}
        public void addArtifact(Artifact a) {
            artifactMap.put(a.getGroupId() + ":" + a.getArtifactId() + ":" + a.getClassifier(), a);
        }

        public Map<String, Artifact> getArtifactMap() {

    /**
     * {@return the group identifier of the artifact}
     */
    @Nonnull
    String getGroupId();

    /**
     * {@return the identifier of the artifact}
     */
    @Nonnull
    String getArtifactId();

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     */
    @Nonnull
    String getClassifier();

    /**

                    + execution.getArtifactId()
                    + ':'
                    + execution.getVersion()
                    + ':'
                    + execution.getGoal());
            buffer.a(' ').strong('(' + execution.getExecutionId() + ')');
        }

        if (project != null) {
            buffer.a(" on project ");
            buffer.project(project.getArtifactId());
        }