{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"impl<'rt,"}]}
impl<'rt, 'tcx, M: Machine<'tcx>> ValidityVisitor<'rt, 'tcx, M> {
    fn aggregate_field_path_elem(&mut self, layout: TyAndLayout<'tcx>, field: usize) -> PathElem {