Function rdkafka_sys::bindings::rd_kafka_conf_set_dr_cb

pub unsafe extern "C" fn rd_kafka_conf_set_dr_cb(
    conf: *mut rd_kafka_conf_t, 
    dr_cb: Option<unsafe extern "C" fn(rk: *mut rd_kafka_t, payload: *mut c_void, len: size_t, err: rd_kafka_resp_err_t, opaque: *mut c_void, msg_opaque: *mut c_void)>
)