protected function filterSlickModules()
    {
        $iterator = new \ArrayIterator($this->psr4Data);
        $modules = [];
        foreach ($iterator as $nameSpace => $path) {
            if (preg_match('/^Slick\\\[a-z_]*\\\$/i', $nameSpace)) {
                $modules[$nameSpace] = reset($path);
            }
        }
        return $modules;
    }