{"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"impl<'tcx>"}]}
        impl<'tcx> TyCtxt<'tcx> {
    ($($field:ident: $vis:vis $method:ident($ty:ty)),+ $(,)?) => (
            $($vis fn $method(self, v: &[$ty]) -> &'tcx List<$ty> {