private static function __doubleUnderlineBorder($string)
    {
        $border          = new Border(Border::TYPE_UNDERLINE, '=');
        $borderedElement = new BorderedElement($string, $border);

        return $borderedElement->render();
    }
private static function __doubleUnderlineBorder($string)
    {
        $border          = new Border(Border::TYPE_UNDERLINE, '=');
        $borderedElement = new BorderedElement($string, $border);

        return $borderedElement->render();
    }
private static function __doubleUnderlineBorder ( $ string ) { $ border = new Border ( Border :: TYPE_UNDERLINE , '=' ) ; $ borderedElement = new BorderedElement ( $ string , $ border ) ; return $ borderedElement -> render ( ) ; }
Underline a string with '='

Be careful, this adds two end-of-line

@param string $string

@return string
Underline a string with =