Session getSession();

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    String getCoordinateString();

    @Nonnull
    static ArtifactCoordinateFactoryRequest build(
            @Nonnull Session session, String groupId, String artifactId, String version, String extension) {

import java.util.Set;

class PropertiesAsMap extends AbstractMap<String, String> {

    private final Map<Object, Object> properties;

    PropertiesAsMap(Map<Object, Object> properties) {
        this.properties = properties;
    }

    @Override
    public Set<Entry<String, String>> entrySet() {
        return new AbstractSet<Entry<String, String>>() {
            @Override

/**
 */
public class DefaultArtifactHandler implements ArtifactHandler {
    private final String type;

    private String extension;

    private String classifier;

    private String directory;

    private String packaging;

    private boolean includesDependencies;

    private String language;

    @Deprecated
    private boolean addedToClasspath;

    /**

    private enum DfsState {
        VISITING,
        VISITED
    }

    private static List<String> visitCycle(
            Map<String, Set<String>> graph,
            Collection<String> children,
            Map<String, DfsState> stateMap,
            LinkedList<String> cycle) {
        if (children != null) {
            for (String v : children) {
                DfsState state = stateMap.putIfAbsent(v, DfsState.VISITING);

public interface ArtifactRepositoryFactory {
    String ROLE = ArtifactRepositoryFactory.class.getName();

    String DEFAULT_LAYOUT_ID = "default";

    String LOCAL_REPOSITORY_ID = "local";

    @Deprecated
    ArtifactRepositoryLayout getLayout(String layoutId) throws UnknownRepositoryLayoutException;

    @Deprecated
    ArtifactRepository createDeploymentArtifactRepository(String id, String url, String layoutId, boolean uniqueVersion)

public class ArtifactRepositoryPolicy {
    public static final String UPDATE_POLICY_NEVER = "never";

    public static final String UPDATE_POLICY_ALWAYS = "always";

    public static final String UPDATE_POLICY_DAILY = "daily";

    public static final String UPDATE_POLICY_INTERVAL = "interval";

    public static final String CHECKSUM_POLICY_FAIL = "fail";

    public static final String CHECKSUM_POLICY_WARN = "warn";

        return file;
    }

    public String getFileContents(File file, String encoding) throws IOException {
        return FileUtils.fileRead(file, encoding);
    }

    protected void finalize() throws Throwable {
        maybeWarnAboutCleanUp();

        super.finalize();
    }

    public File createFile(String filename, String content, String encoding) throws IOException {

 * 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;

    private final XmlNode configuration;

    private enum DfsState {
        VISITING,
        VISITED
    }

    final Map<String, Vertex> vertices = new LinkedHashMap<>();

    public Vertex getVertex(String id) {
        return vertices.get(id);
    }

    public Collection<Vertex> getVertices() {
        return vertices.values();
    }

    Vertex addVertex(String label) {
        return vertices.computeIfAbsent(label, Vertex::new);
    }

    private static final String FAMILY_DOS = "dos";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_MAC = "mac";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_TANDEM = "tandem";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_UNIX = "unix";

    /**