Function librdkafka_sys::rd_kafka_conf_set_stats_cb

pub unsafe extern "C" fn rd_kafka_conf_set_stats_cb(
    conf: *mut rd_kafka_conf_t, 
    stats_cb: Option<unsafe extern "C" fn(_: *mut rd_kafka_t, _: *mut c_char, _: size_t, _: *mut c_void) -> c_int>
)