*/
    static boolean isInScope(Artifact artifact, Artifact nodeArtifact) {
        return Objects.equals(artifact.getGroupId(), nodeArtifact.getGroupId())
                && Objects.equals(artifact.getArtifactId(), nodeArtifact.getArtifactId())
                && Objects.equals(artifact.getVersion(), nodeArtifact.getVersion());
    }

    public PluginNotFoundException(Plugin plugin, ArtifactNotFoundException e) {
        super(
                "Plugin could not be found - check that the goal name is correct: " + e.getMessage(),
                e.getGroupId(),
                e.getArtifactId(),
                e.getVersion(),
                "maven-plugin",
                null,
                e.getRemoteRepositories(),
                null,

            Plugin plugin, RepositorySystemSession session, List<RemoteRepository> repositories) {
        setGroupId(plugin.getGroupId());
        setArtifactId(plugin.getArtifactId());

        setRepositorySession(session);

        setRepositories(repositories);
    }

    public String getGroupId() {
        return groupId;
    }

    public DefaultPluginVersionRequest setGroupId(String groupId) {

                    session,
                    new org.eclipse.aether.graph.Dependency(
                            new org.eclipse.aether.artifact.DefaultArtifact(
                                    request.getGroupId(),
                                    request.getArtifactId(),
                                    request.getClassifier(),
                                    request.getExtension(),

     * The identifier is composed of groupId, artifactId, extension, classifier, and version.
     *
     * @return the unique identifier
     */
    @Nonnull
    default String key() {
        return getGroupId()
                + ':'
                + getArtifactId()
                + ':'
                + getExtension()
                + (getClassifier().isEmpty() ? "" : ":" + getClassifier())
                + ':'

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

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

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

    /**
     * The classifier of the artifact.
     *

                    "parent.groupId", problems, Severity.FATAL, Version.BASE, parent.getGroupId(), parent);

            validateStringNotEmpty(
                    "parent.artifactId", problems, Severity.FATAL, Version.BASE, parent.getArtifactId(), parent);

            if (equals(parent.getGroupId(), m.getGroupId()) && equals(parent.getArtifactId(), m.getArtifactId())) {
                addViolation(

        return repository.getId();
    }

    private String getPath(Metadata metadata, String repositoryKey) {
        StringBuilder path = new StringBuilder(128);

        if (!metadata.getGroupId().isEmpty()) {
            path.append(metadata.getGroupId().replace('.', '/')).append('/');

            if (!metadata.getArtifactId().isEmpty()) {
                path.append(metadata.getArtifactId()).append('/');

    // ----------------------------------------------------------------------

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        if (getGroupId() != null) {
            sb.append(getGroupId());
            sb.append(':');
        }
        appendArtifactTypeClassifierString(sb);
        sb.append(':');
        if (getBaseVersionInternal() != null) {

                }
                Artifact result = new RelocatedArtifact(
                        original,
                        isAny(relocation.target.getGroupId()) ? null : relocation.target.getGroupId(),
                        isAny(relocation.target.getArtifactId()) ? null : relocation.target.getArtifactId(),