{"ast_node_type":"function","tokens":[{"end":59,"kind":"keyword","start":0,"text":"fn"}]}
    fn visit_ty(&mut self, ty: &'v hir::Ty<'v, AmbigArg>) {
impl<'v> hir::intravisit::Visitor<'v> for TraitObjectVisitor<'v> {
        match ty.kind {