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

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

     * @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;

        this.usedTypes = new ConcurrentHashMap<>();
        this.manager = requireNonNull(manager, "artifactHandlerManager cannot be null");
    }

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

    assertThat(callbacks).isEmpty()
  }

  private fun consumeEvents(source: String) {
    val callback: ServerSentEventReader.Callback =
      object : ServerSentEventReader.Callback {
        override fun onEvent(
          id: String?,
          type: String?,
          data: String,
        ) {
          callbacks.add(Event(id, type, data))
        }

        override fun onRetryChange(timeMs: Long) {

        orderedEventSpyDispatcherMock
                .verify(eventSpyDispatcherMock, times(1))
                .onEvent(any(ToolchainsBuildingRequest.class));
        orderedEventSpyDispatcherMock
                .verify(eventSpyDispatcherMock, times(1))
                .onEvent(any(ToolchainsBuildingResult.class));
    }

    @Test
    void resumeFromSelectorIsSuggestedWithoutGroupId() {

        ReactorReaderSpy(Lookup lookup) {
            this.lookup = lookup;
        }

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

        @Override
        public void onEvent(Object event) throws Exception {
            if (event instanceof ExecutionEvent executionEvent) {
                ReactorReader reactorReader = lookup.lookup(ReactorReader.class);

        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);

    protected int doExecute(MavenContext context, MavenExecutionRequest request) throws Exception {
        context.eventSpyDispatcher.onEvent(request);

        MavenExecutionResult result;
        try {
            result = context.maven.execute(request);
            context.eventSpyDispatcher.onEvent(result);
        } finally {
            context.eventSpyDispatcher.close();
        }

        if (result.hasExceptions()) {

            cliRequest.request.setRepositoryCache(new DefaultRepositoryCache());
        }

        eventSpyDispatcher.onEvent(request);

        MavenExecutionResult result = maven.execute(request);

        eventSpyDispatcher.onEvent(result);

        eventSpyDispatcher.close();

        if (result.hasExceptions()) {

                .build();

        customizeSettingsRequest(context, settingsRequest);
        if (context.eventSpyDispatcher != null) {
            context.eventSpyDispatcher.onEvent(settingsRequest);
        }

        context.logger.debug("Reading installation settings from '" + installationSettingsFile + "'");
        context.logger.debug("Reading project settings from '" + projectSettingsFile + "'");