{"ast_node_type":"variable","tokens":[{"end":94,"kind":"keyword","start":0,"text":"let"}]}
                            let niche_end_const = bx.cx().const_uint_big(tag_llty, niche_end);
                        if niche_start == tag_range.start {
                            bx.icmp(IntPredicate::IntSLE, tag, niche_end_const)