Function librdkafka_sys::rd_kafka_consume_callback

pub unsafe extern "C" fn rd_kafka_consume_callback(
    rkt: *mut rd_kafka_topic_t, 
    partition: int32_t, 
    timeout_ms: c_int, 
    consume_cb: Option<unsafe extern "C" fn(_: *mut rd_kafka_message_t, _: *mut c_void)>, 
    opaque: *mut c_void
) -> c_int