{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
                // we normalize it, as otherwise types like `<&'a &'b () as Trait>::Assoc`
                // IMPORTANT: We have to prove well formed for the function signature before
                // get normalized away, causing us to ignore the `'b: 'a` bound used by the function.