{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"format_to!(label,"}]}
                    format_to!(label, "niches = 2{} + 1, ", pwr2_to_exponent(niches - 1));
                } else if is_pwr2plus1(niches) {
                } else if is_pwr2minus1(niches) {