{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":")"}]}
    ) -> InterpResult<'tcx, Option<(AllocId, Size, M::ProvenanceExtra)>> {
        size: Size,
        let size = i64::try_from(size.bytes()).unwrap(); // it would be an error to even ask for more than isize::MAX bytes