{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"type"}]}
                        type Result = ControlFlow<Span>;
                    impl<'v> intravisit::Visitor<'v> for Visitor {
                        fn visit_ty(&mut self, ty: &'v hir::Ty<'v, AmbigArg>) -> Self::Result {