dispatcher.onEvent(event);
        delegate.projectDiscoveryStarted(event);
    }

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

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

        dispatcher.onEvent(event);
        delegate.artifactDeployed(event);
    }

    @Override
    public void artifactDeploying(RepositoryEvent event) {
        dispatcher.onEvent(event);
        delegate.artifactDeploying(event);
    }

    @Override
    public void artifactDescriptorInvalid(RepositoryEvent event) {
        dispatcher.onEvent(event);

                logError("initialize", e, eventSpy);
            }
        }
    }

    public void onEvent(Object event) {
        if (eventSpies.isEmpty()) {
            return;
        }
        for (EventSpy eventSpy : eventSpies) {
            try {
                eventSpy.onEvent(event);
            } catch (Exception | LinkageError e) {
                logError("notify", e, eventSpy);
            }

    EventSpyImpl(DefaultSessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @Override
    public void init(Context context) throws Exception {}

    @Override
    public void onEvent(Object arg) throws Exception {
        if (arg instanceof ExecutionEvent) {
            ExecutionEvent ee = (ExecutionEvent) arg;
            InternalMavenSession session =

            context.eventSpyDispatcher.onEvent(settingsBuilderRequest);
        }
    }

    @Override
    protected void customizeSettingsResult(C context, SettingsBuilderResult settingsBuilderResult) throws Exception {
        if (context.eventSpyDispatcher != null) {
            context.eventSpyDispatcher.onEvent(settingsBuilderResult);
        }
    }

 * @since 3.0.2
 */
public abstract class AbstractEventSpy implements EventSpy {

    public void init(Context context) throws Exception {}

    public void onEvent(Object event) throws Exception {}

    public void close() throws Exception {}

        this.typeRegistry = requireNonNull(typeRegistry, "null typeRegistry");
        this.allHandlers = new ConcurrentHashMap<>();
    }

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

        }
        settingsRequest.setUserProperties(props);

        if (request.getEventSpyDispatcher() != null) {
            request.getEventSpyDispatcher().onEvent(settingsRequest);
        }

        LOGGER.debug(
                "Reading installation settings from '{}'",

     * @see org.apache.maven.project.DependencyResolutionResult
     * @see org.apache.maven.execution.ExecutionEvent
     * @see org.eclipse.aether.RepositoryEvent
     */
    void onEvent(Object event) throws Exception;

    /**
     * Notifies the spy of Maven's termination, allowing it to free any resources allocated by it.
     */
    void close() throws Exception;

    @Inject
    public LegacyArtifactHandlerManager(Map<String, ArtifactHandler> artifactHandlers) {
        this.artifactHandlers = requireNonNull(artifactHandlers);
    }

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