Handling deferred attributes automatically #118

orders = service.orders.get_entities()

for o in orders:
    do_some_stuff_with(o.Customers)  # This is an empty list right now so nothing will get done.

# The data must be reloaded as per the below for anything to happen.
orders = service.orders.get_entities().expand("Customers")

orders = service.orders.get_entities()

for o in orders:
   do_some_stuff_with(o.Customers)  # Request is automatically made using the `__deferred` attribute which transparently offers the missing data back to the class.