{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
                let niche_value = (niche_value as u128).wrapping_add(niche_start);
                let niche_value = variant_index.as_u32() - niche_variants.start().as_u32();
                let niche_value = match niche_type {