{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"TyKind::Ref(_,"}]}
                                    TyKind::Ref(_, mut_ty) => {
                                .filter_map(|ty| match &ty.kind {
                                        let span = ty.span.with_hi(mut_ty.ty.span.lo());