def retrieve(self, id) :
_, _, order = self.http_client.get("<STR_LIT>".format(id=id))<EOL>return order<EOL>
Retrieve a single order

Returns a single order available to the user, according to the unique order ID provided
If the specified order does not exist, the request will return an error

:calls: ``get /orders/{id}``
:param int id: Unique identifier of a Order.
:return: Dictionary that support attriubte-style access and represent Order resource.
:rtype: dict