private function findIndexFiles()
 {
     $documentationDirectory = $this->documentationDirectory;
     $projectDocumentationDirectories = array_map(function ($directory) use($documentationDirectory) {
         return Path::directory($this->projectDirectory . $directory . $documentationDirectory);
     }, $this->libraryDirectories);
     $indexFiles = Finder::create()->in($projectDocumentationDirectories)->files()->name($this->indexFile);
     return $indexFiles;
 }
 public function __construct($linksDirectory, Filesystem $filesystem)
 {
     $this->filesystem = $filesystem;
     $this->linksDirectory = Path::directory($linksDirectory);
 }