{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
            // FIXME(ZuseZ4): We should add support for Vec here too, but it's less urgent since
            let next_outer_ty = cx.val_ty(next_outer_arg);
            // vectors behind references (&Vec<T>) are already supported. Users can not pass a