private function getFileResources()
    {
        $paths = array();

        foreach ($this->directories as $directory) {
            foreach ($directory as $file) {
                $relative = $this->getRelativeName($file, $directory);

                if (!isset($paths[$relative])) {
                    $paths[$relative] = $file;
                }
            }
        }

        return array_values($paths);
    }