src/helpers/Element.php
public static function flag($country, $options = [])
    {
        Ui::addCssClasses($options, ['flag', $country]);
        return Ui::tag('i', '', $options);
    }
public static function flag($country, $options = [])
    {
        Ui::addCssClasses($options, ['flag', $country]);
        return Ui::tag('i', '', $options);
    }
Renders a [flag](http://semantic-ui.com/elements/flag.html)

@param string $country the flag's country ISO code to render
@param array $options the tag options in terms of name-value pairs

@return string the generated flag tag