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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _handle_order_args(self, rison_args):
 """ Help function to handle rison order arguments :param rison_args: :return: """

        order_column = rison_args.get(API_ORDER_COLUMN_RIS_KEY, "")
        order_direction = rison_args.get(API_ORDER_DIRECTION_RIS_KEY, "")
        if not order_column and self.base_order:
            order_column, order_direction = self.base_order
        if order_column not in self.order_columns:
            return "", ""
        return order_column, order_direction