How to use storyManager method of net.serenitybdd.jbehave.embedders.ExtendedEmbedder class

...245        BatchFailures failures = new BatchFailures(configuredEmbedder.embedderControls().verboseFailures());246        PerformableTree performableTree = configuredEmbedder.performableTree();247        RunContext context = performableTree.newRunContext(getConfiguration(), candidateSteps,248                configuredEmbedder.embedderMonitor(), configuredEmbedder.metaFilter(), failures);249        performableTree.addStories(context, configuredEmbedder.storyManager().storiesOfPaths(storyPaths));250        return performableTree;251    }252    private void addSuite(List<Description> storyDescriptions, String name) {253        storyDescriptions.add(Description.createTestDescription(Object.class,254                name));255    }256    private boolean metaFiltersAreDefined() {257        String metaFilters = getMetafilterSetting();258        return !StringUtils.isEmpty(metaFilters);259    }260    private String getMetafilterSetting() {261        Optional<String> environmentMetafilters = getEnvironmentMetafilters();262        Optional<String> annotatedMetafilters = getAnnotatedMetafilters(testClass);263        Optional<String> thucAnnotatedMetafilters = getThucAnnotatedMetafilters(testClass);...

...117    public ExecutorService executorService() {118        return embedder.executorService();119    }120    @Override121    public StoryManager storyManager() {122        return embedder.storyManager();123    }124    @Override125    public List<String> metaFilters() {126        return embedder.metaFilters();127    }128    @Override129    public Map<String, MetaFilter.MetaMatcher> metaMatchers() {130        return embedder.metaMatchers();131    }132    @Override133    public MetaFilter metaFilter() {134        return embedder.metaFilter();135    }136    @Override...