this.allHandlers = new ConcurrentHashMap<>();
    }

    @Override
    public void onEvent(Object event) {
        if (event instanceof ExecutionEvent executionEvent) {
            if (executionEvent.getType() == ExecutionEvent.Type.SessionEnded) {
                allHandlers.clear();
            }
        }
    }

    @Override
    public ArtifactHandler getArtifactHandler(String id) {

        Object qualifier = key.getAnnotation() instanceof Named n ? n.value() : key.getAnnotation();
        org.apache.maven.di.Key<T> k =
                org.apache.maven.di.Key.ofType(key.getTypeLiteral().getType(), qualifier);
        return scope(k, unscoped::get)::get;
    }

    public static <T> Provider<T> seededKeyProvider(Class<? extends T> clazz) {
        return MojoExecutionScope.<T>seededKeySupplier(clazz)::get;
    }

 */
@Deprecated(since = "4.0.0")
public interface Toolchain {

    /**
     * get the type of toolchain.
     *
     * @return the toolchain type
     */
    String getType();

    /**
     * Gets the platform tool executable.
     *
     * @param toolName the tool platform independent tool name.
     * @return file representing the tool executable, or null if the tool can not be found

        return artifact.getGroupId();
    }

    @Override
    public String getArtifactId() {
        return artifact.getArtifactId();
    }

    @Override
    public String getType() {
        return artifact.getExtension();
    }

    @Override
    public String getClassifier() {
        return artifact.getClassifier();
    }

    @Override
    public String getVersion() {

        ForkedProjectSucceeded,
        ForkedProjectFailed,
    }

    /**
     * Gets the type of the event.
     *
     * @return The type of the event, never {@code null}.
     */
    Type getType();

    /**
     * Gets the session from which this event originates.
     *
     * @return The current session, never {@code null}.
     */
    MavenSession getSession();

    /**

        Object qualifier = key.getAnnotation() instanceof Named n ? n.value() : key.getAnnotation();
        org.apache.maven.di.Key<T> k =
                org.apache.maven.di.Key.ofType(key.getTypeLiteral().getType(), qualifier);
        return scope(k, unscoped::get)::get;
    }

    public static <T> Provider<T> seededKeyProvider(Class<? extends T> clazz) {
        return SessionScope.<T>seededKeySupplier(clazz)::get;
    }

            return null;
        }

        @Override
        @Nonnull
        public InputStream openStream() throws IOException {
            return new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8));
        }

        @Override
        @Nonnull
        public String getLocation() {
            return artifact.getId();
        }

        @Override
        @Nullable

    private String type = "jar";

    public TypeArtifactFilter(String type) {
        this.type = type;
    }

    @Override
    public boolean include(Artifact artifact) {
        return type.equals(artifact.getType());
    }

    @Override
    public int hashCode() {
        int hash = 17;
        hash = hash * 31 + type.hashCode();
        return hash;
    }

    @Override
    public boolean equals(Object obj) {

 */
public interface WorkspaceRepository extends Repository {

    /**
     * {@return the type of the repository, i.e. "workspace"}
     */
    @Nonnull
    @Override
    default String getType() {
        return "workspace";
    }

        this.parent = parent;
        this.parentImports = parentImports;
        this.foreignImports = foreignImports;
        this.constituents = constituents;
    }

    @Override
    public RealmType getType() {
        return type;
    }

    @Override
    public ClassLoader getParent() {
        return parent;
    }

    @Override
    public List<String> getImports() {
        return getParentImports();