public function quoteExpression($expression)
    {
        if ($expression instanceof FieldInterface) {
            $this->_quoteComparison($expression);

            return;
        }

        if ($expression instanceof OrderByExpression) {
            $this->_quoteOrderBy($expression);

            return;
        }

        if ($expression instanceof IdentifierExpression) {
            $this->_quoteIdentifierExpression($expression);

            return;
        }
    }