{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
                        // this up to the trait, at least before this becomes real syntax.
                        // FIXME(compiler-errors): this could be improved by suggesting lifting
                        // e.g. `Trait<for<'a> Assoc = Ty>` -> `for<'a> Trait<Assoc = Ty>`