* @see #getTopDirectory()
     * @since 4.0.0
     */
    Path getRootDirectory();

    /**
     * @since 3.3.0
     */
    MavenExecutionRequest setEventSpyDispatcher(EventSpyDispatcher eventSpyDispatcher);

    /**
     * @since 3.3.0
     */
    EventSpyDispatcher getEventSpyDispatcher();

    /**
     * @since 3.3.0
     */

    public MavenExecutionRequest setTopDirectory(Path topDirectory) {
        this.topDirectory = topDirectory;
        return this;
    }

    @Override
    public MavenExecutionRequest setEventSpyDispatcher(EventSpyDispatcher eventSpyDispatcher) {
        this.eventSpyDispatcher = eventSpyDispatcher;
        return this;
    }

    @Override
    public EventSpyDispatcher getEventSpyDispatcher() {

        // needs to be supported so the EventSpyDispatcher needs to be put in the CliRequest so that
        // it can be accessed by configuration processors.
        //
        cliRequest.request.setEventSpyDispatcher(eventSpyDispatcher);

        //
        // We expect at most 2 implementations to be available. The SettingsXmlConfigurationProcessor implementation