lib/Sirel/Visitor/ToSql.php
protected function visitSirelNodeOrder(Node\Order $order)
    {
        return $this->visit($order->getExpression()) . " "
            . ($order->isAscending() ? "ASC" : "DESC");
    }
protected function visitSirelNodeOrder(Node\Order $order)
    {
        return $this->visit($order->getExpression()) . " "
            . ($order->isAscending() ? "ASC" : "DESC");
    }
protected function visitSirelNodeOrder ( Node \ Order $ order ) { return $ this -> visit ( $ order -> getExpression ( ) ) . " " . ( $ order -> isAscending ( ) ? "ASC" : "DESC" ) ; }
Create an ORDER Expression

@param  Node\Order $order
@return string
Create an ORDER Expression