{"ast_node_type":"variable","tokens":[{"end":25,"kind":"keyword","start":0,"text":"let"}]}
    let infer_lifetimes =
    let named_const_param_count = param_counts.consts - synth_const_param_count;
        (gen_pos != GenericArgPosition::Type || seg.infer_args) && !gen_args.has_lifetime_params();