Class add_tracking_data_t

object --+            
         |            
 gxml.Node --+        
             |        
 gxml.Document --+    
                 |    
  abstract_order_t --+
                     |
                    add_tracking_data_t

>>> test_document(
...     add_tracking_data_t(
...         google_order_number = '841171949013218',
...         tracking_data = tracking_data_t(
...             carrier = 'UPS',
...             tracking_number = 'Z9842W69871281267'
...         )
...     )
... ,
...     '''
...     <add-tracking-data xmlns="http://checkout.google.com/schema/2"
...                        google-order-number="841171949013218">
...       <tracking-data>
...         <tracking-number>Z9842W69871281267</tracking-number>
...         <carrier>UPS</carrier>
...       </tracking-data>
...     </add-tracking-data>
...     '''
... )