Todaymade\Daux\Tree\Builder::build PHP Method

    public static function build($node, $ignore)
    {
        if (($it = new \FilesystemIterator($node->getPath())) == false) {
            return;
        }
        if ($node instanceof Root) {
            // Ignore config.json in the root directory
            $ignore['files'][] = 'config.json';
        }
        /** @var \SplFileInfo $file */
        foreach ($it as $file) {
            if (static::isIgnored($file, $ignore)) {
                continue;
            }
            if ($file->isDir()) {
                $new = new Directory($node, static::removeSortingInformations($file->getFilename()), $file);
                $new->setName(static::getName($file->getPathName()));
                $new->setTitle(str_replace('_', ' ', static::removeSortingInformations($new->getName())));
                static::build($new, $ignore);
            } else {
                static::createContent($node, $file);
            }
        }
        $node->sort();
    }

 protected function getTree(Config $config)
 {
     $structure = ['Content' => ['Page.md' => 'some text content'], 'Widgets' => ['Page.md' => 'another page', 'Button.md' => 'another page']];
     $root = vfsStream::setup('root', null, $structure);
     $config->setDocumentationDirectory($root->url());
     $config['valid_content_extensions'] = ['md'];
     $config['mode'] = Daux::STATIC_MODE;
     $config['index_key'] = 'index.html';
     $tree = new Root($config);
     Builder::build($tree, []);
     return $tree;
 }