<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_order(self, order_id):
 """Lookup an order based on the order id returned from one of the order functions. Parameters order_id : str The unique identifier for the order. Returns ------- order : Order The order object. """

        if order_id in self.blotter.orders:
            return self.blotter.orders[order_id].to_api_obj()