apart joking ... I have one real reason why to stub get_string. I need to work directly with ```LanItems``` and ```@Items```. As it is referenced in the code ... so I cannot use ```duplicate```. And whenever I set ```@Items``` at some value, I need to unset it at the end of the test otherwise other tests are influenced too. When I use stubbing it is handled by rspec.

I need to do some investigation on this topic.