public static extern void rd_kafka_conf_set_dr_msg_cb(IntPtr conf, DeliveryReportCallback dr_cb);
internal static void conf_set_dr_msg_cb(IntPtr conf, DeliveryReportCallback dr_msg_cb) => _conf_set_dr_msg_cb(conf, dr_msg_cb);
internal static extern void rd_kafka_conf_set_dr_msg_cb( IntPtr conf, DeliveryReportCallback dr_msg_cb);