{"ast_node_type":"function","tokens":[{"end":67,"kind":"keyword","start":0,"text":"fn"}]}
            fn visit_ty(&mut self, ty: &'_ hir::Ty<'_, AmbigArg>) {
        impl<'tcx> hir::intravisit::Visitor<'_> for FnPtrFinder<'tcx> {
                debug!(?ty);