[Bioc-devel] implementing interfaces

hi all, this will probably demonstrate my lack of knowledge concerning 
OOP in R, but I am hoping for some quick answers. This is a problem I 
have faced before.

I want to use the method bg.correct.mas, this method takes as its object 
an AffyBatch. I don't have an AffyBatch nor do I want to massage my data 
structures into such an object, so I want to implement the AffyBatch 
interface. However, I can see no way to determine the list of generics 
which have methods defined on AffyBatch (and superclasses). I understand 
that things are method-centric, however I assume that being 
method-centric still leaves room for a way to know the methods 
specialized for a class/interface so that I as a programmer can define 
the suitable methods on a new class without having to dig around all 
over the place determining what I need to define. My question is:

is there a function to determine all the methods that are specialized 
for a certain class? Also, would it be possible to write a function 
adheresTo(classA, classB), which tells me that classB satisfies the 
calling requirements of classA (forget for a moment that we have public 
member variables).

note, i don't want to make a subclass of AffyBatch.

thanks, jim