public function getDesignModules()
    {
        $iterator = $this->createFinder()
            ->in($this->getAbsoluteDesignFolder())
            ->directories();

        $modules = [];
        foreach ($iterator as $file) {
        	if(file_exists($file->getRealPath().'/index.ss')) {
            	$modules[] = new DesignModule($file->getRealPath());
        	}
        }

        return $modules;
    }