@property<EOL><INDENT>def order_id(self):<DEDENT>
return self._order_id<EOL>
Gets the order_id of this ChargeRequest.
The ID of the order to associate with this transaction.  If you provide this value, the `amount_money` value of your request must __exactly match__ the value of the order's `total_money` field.

:return: The order_id of this ChargeRequest.
:rtype: str