Passing functions addresses to tolua classes

["jose_marin2 <jose_marin2@...>" <jose_marin2@...>]

Hi!

Is there some way of do this?
Later, I will call the function inside the method "doDomething". How 
to store the function to call it later? I know how to do using 
lua_ref, but how to do this with tolua "classes"?

function someFunc()
...
end

function someOtherFunc()
...
end

theClass = MyClass:new()

theClass:SetFunc(someFunc)

theClass:doDomething()


theClass:SetFunc(someOtherFunc)

theClass:doDomething()