break;

                case SessionStarted:
                    listener.sessionStarted(event);
                    break;
                case SessionEnded:
                    listener.sessionEnded(event);
                    break;

                case ProjectSkipped:
                    listener.projectSkipped(event);
                    break;
                case ProjectStarted:

        // default does nothing
    }

    @Override
    public void sessionStarted(ExecutionEvent event) {
        // default does nothing
    }

    @Override
    public void sessionEnded(ExecutionEvent event) {
        // default does nothing
    }

    @Override
    public void projectSkipped(ExecutionEvent event) {
        // default does nothing
    }

    @Override

     * {@link org.apache.maven.api.EventType} have same elements in same order.
     */
    enum Type {
        ProjectDiscoveryStarted,
        SessionStarted,
        SessionEnded,
        ProjectSkipped,
        ProjectStarted,
        ProjectSucceeded,
        ProjectFailed,
        MojoSkipped,
        MojoStarted,
        MojoSucceeded,
        MojoFailed,
        ForkStarted,

    public void sessionStarted(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.sessionStarted(event);
    }

    @Override
    public void sessionEnded(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.sessionEnded(event);
    }

    @Override
    public void projectSkipped(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.projectSkipped(event);
    }

 *
 */
public interface ExecutionListener {

    void projectDiscoveryStarted(ExecutionEvent event);

    void sessionStarted(ExecutionEvent event);

    void sessionEnded(ExecutionEvent event);

    void projectSkipped(ExecutionEvent event);

    void projectStarted(ExecutionEvent event);

    void projectSucceeded(ExecutionEvent event);

        setMdc(event);
        buildEventListener.sessionStarted(event);
        delegate.sessionStarted(event);
    }

    @Override
    public void sessionEnded(ExecutionEvent event) {
        setMdc(event);
        delegate.sessionEnded(event);
    }

    @Override
    public void projectStarted(ExecutionEvent event) {
        setMdc(event);

            currentVisitedProjectCount = allProjects.size() - projects.size();
            totalProjects = allProjects.size();
        }
    }

    @Override
    public void sessionEnded(ExecutionEvent event) {
        if (logger.isInfoEnabled()) {
            init();
            if (event.getSession().getProjects().size() > 1) {
                logReactorSummary(event.getSession());
            }

            currentVisitedProjectCount = allProjects.size() - projects.size();
            totalProjects = allProjects.size();
        }
    }

    @Override
    public void sessionEnded(ExecutionEvent event) {
        if (logger.isInfoEnabled()) {
            init();
            if (event.getSession().getProjects().size() > 1) {
                logReactorSummary(event.getSession());
            }

    }

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

    public ArtifactHandler getArtifactHandler(String type) {
        requireNonNull(type, "null type");

    }

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

    @Override
    public Optional<Type> lookup(String id) {
        return Optional.of(require(id));
    }

    @Override