public function printStyles()
    {
        foreach ($this->styles as $key => $options) {
            $href = (is_string($options['src'])) ? $options['src'] : $this->getStyleLink($key);
            if ($options['with_version']) {
                $href = call_user_func_array($this->assetInsertMethod, [$href, $this->assetVersion]);
            }
            echo "<link rel='stylesheet'  href='" . $href . "' type='text/css' media='" . $options["media"] . "' />\n";
        }
    }