so I ported Memoizable into my app,
but I need a way to spec that certain methods have been memoized.
Is it a bad idea to add a :memoized_methods attribute to any memoized
class / object
will allow me to spec;
I'd prefer this rather than spec-ing
(I still don't get why it's not just an
"alias_method_chain :some_method, :memoization")