private Map<String, Artifact> reportArtifactMap;

    private Set<Artifact> extensionArtifacts;

    private Map<String, Artifact> extensionArtifactMap;

    private Map<String, Artifact> managedVersionMap;

    private Map<String, MavenProject> projectReferences = new HashMap<>();

    private boolean executionRoot;

    private File parentFile;

    private Map<String, Object> context;

    private static final String PREFIX_PROJECT = "project.";
    private static final String PREFIX_POM = "pom.";
    private static final List<String> PROJECT_PREFIXES_3_1 = Arrays.asList(PREFIX_POM, PREFIX_PROJECT);
    private static final List<String> PROJECT_PREFIXES_4_0 = Collections.singletonList(PREFIX_PROJECT);

    private static final Collection<String> TRANSLATED_PATH_EXPRESSIONS;

    static {

    // groupId -> (artifactId -> (version -> project)))
    private Map<String, Map<String, Map<String, MavenProject>>> projects;
    private Map<String, Map<String, Map<String, MavenProject>>> allProjects;
    private Path projectLocalRepository;
    // projectId -> Deque<lifecycle>
    private final Map<String, Deque<String>> lifecycles = new ConcurrentHashMap<>();

    @Inject
    ReactorReader(MavenSession session) {

    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

        return Collections.unmodifiableList(artifacts);
    }

    private Map<String, ClassLoader> calcImports(MavenProject project, ClassLoader parent, List<String> imports) {
        Map<String, ClassLoader> foreignImports = new HashMap<>();

        ClassLoader projectRealm = project.getClassRealm();
        if (projectRealm != null) {

            return DEFAULT_VALIDATION_LEVEL;
        }
    }

    private String pluginKey(String groupId, String artifactId, String version) {
        return groupId + ":" + artifactId + ":" + version;
    }

    private String pluginKey(MojoDescriptor mojoDescriptor) {
        PluginDescriptor pd = mojoDescriptor.getPluginDescriptor();

/**
 */
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;

    /**

     *
     * @see org.apache.maven.api.services.ArtifactCoordinateFactory#create(Session, String, String, String, String, String, String)
     */
    @Nonnull
    ArtifactCoordinate createArtifactCoordinate(
            String groupId, String artifactId, String version, String classifier, String extension, String type);

    /**
     * Shortcut for {@code getService(ArtifactFactory.class).create(...)}.
     *

    }

    public Artifact createArtifact(String groupId, String artifactId, String version, String packaging) {
        return artifactFactory.createBuildArtifact(groupId, artifactId, version, packaging);
    }

    public Artifact createArtifactWithClassifier(
            String groupId, String artifactId, String version, String type, String classifier) {