[throwaway313373]

It is unclear what is the condition of automatic folding of the second level and below.

If you are using "Go to..." a struct declaration or impl in Rust (or a class in other languages) it actually makes a lot of sense. If I'm going to a struct/impl/class I don't know yet which method do I won't to see. If you are just opening a file that you haven't open before though... I'm not so sure.