- pce_to_method(+Spec, -Object) is semidet
- Object is the XPCE object described by Spec. Spec is one of
- send(Receiver, Selector)
- Receiver -> Selector
- Find a send-method on Receiver
- get(Receiver, Selector)
- <-(Receiver, Selector)
- Find a get-method on Receiver
- Receiver - Selector
- Find an instance variable (slot) on Receiver
- ClassName
- Find a class from its name