{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"Err(OverlappingIndices)"}]}
            Err(OverlappingIndices) => {
            Ok([a, b, c]) => (a, b, c),
                panic!("Indices {ai:?}, {bi:?} and {ci:?} are not disjoint!")