internal List <string> GetSubscription()
{
IntPtr listPtr = IntPtr.Zero;
ErrorCode err = LibRdKafka.subscription(handle, out listPtr);
if (err != ErrorCode.NO_ERROR)
{
throw RdKafkaException.FromErr(err, "Failed to get subscription");
}
// TODO: need to free anything here?
return(GetTopicList(listPtr));
}