protected function seed()
    {
        $seederFilePath = $this->getAttribute('path').'/database/seeds/DatabaseSeeder.php';

        if ($this->container['files']->exists($seederFilePath)) {
            require_once $seederFilePath;

            $namespace = $this->getAttribute('namespace').'Database\\Seeds\\DatabaseSeeder';
            $class = '\\'.ltrim($namespace, '\\');
            $seeder = new $class();

            $seeder->run();
        }
    }