Function rd_kafka_produce

pub unsafe extern "C" fn rd_kafka_produce(
    rkt: *mut rd_kafka_topic_t,
    partition: i32,
    msgflags: c_int,
    payload: *mut c_void,
    len: usize,
    key: *const c_void,
    keylen: usize,
    msg_opaque: *mut c_void,
) -> c_int