session, groupId, artifactId, version, classifier, extension, type));
    }

    @Nonnull
    default ArtifactCoordinate create(@Nonnull Session session, Artifact artifact) {
        return create(ArtifactCoordinateFactoryRequest.build(
                session,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion().asString(),

            this.groupId = groupId;
            return this;
        }

        public ArtifactFactoryRequestBuilder artifactId(String artifactId) {
            this.artifactId = artifactId;
            return this;
        }

        public ArtifactFactoryRequestBuilder version(String version) {
            this.version = version;
            return this;

        super(message, artifact, remoteRepositories);
    }

    public ArtifactResolutionException(String message, Artifact artifact, Throwable cause) {
        super(message, artifact, null, cause);
    }

    public ArtifactResolutionException(
            String message, Artifact artifact, List<ArtifactRepository> remoteRepositories, Throwable cause) {

    /**
     * Creates an artifact.
     *
     * @param request the request holding artifact creation parameters
     * @return an {@code Artifact}, never {@code null}
     * @throws IllegalArgumentException if {@code request} is null or {@code request.session} is null or invalid
     */
    @Nonnull
    Artifact create(@Nonnull ArtifactFactoryRequest request);

    @Nonnull
    default Artifact create(

        this.artifactId = artifactId;
        this.repository = repository;
    }

    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;
    }

import org.codehaus.plexus.classworlds.realm.ClassRealm;

/**
 * Provides information about artifacts (identified by groupId:artifactId string key) and classpath elements exported by
 * Maven core itself or a Maven core extension.
 *
 * @since 3.3.0
 */
public class CoreExtensionEntry {
    private final ClassRealm realm;

    private final Set<String> artifacts;

    private final Set<String> packages;

    private final String key;

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }

    @Override
    public Artifact transformArtifact(Artifact artifact) {
        return artifact;
    }

    @Override
    public Collection<? extends Metadata> finish(Collection<? extends Artifact> artifacts) {
        LinkedHashMap<String, PluginsMetadata> plugins = new LinkedHashMap<>();

     * Returns a filter for only the core artifacts.
     *
     * @return the artifact filter
     */
    ArtifactFilter getCoreArtifactFilter();

    /**
     * Exclude an extension artifact (doesn't affect getArtifactFilter's result, only getExtensionArtifactFilter).
     *
     * @param artifactId an artifact id
     * @deprecated use {@code META-INF/maven/extension.xml} to define artifacts exported by Maven core and plugin

            this.groupId = groupId;
            this.artifactId = artifactId;
            this.hashCode = Objects.hash(groupId, artifactId);
        }

        @Override
        public int hashCode() {
            return hashCode;
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) {
                return true;
            }

    private final String groupId;

    private final String artifactId;

    public PluginVersionNotFoundException(String groupId, String artifactId) {
        super("The plugin '" + groupId + ":" + artifactId + "' does not exist or no valid version could be found");

        this.groupId = groupId;
        this.artifactId = artifactId;
    }

    public String getGroupId() {
        return groupId;
    }