SubscriptionHandle {{ subscribe }}(const struct {{ class_name }} *handle);
{{ pop_batch_decl }}
int32_t {{ wait }}(SubscriptionHandle sub, uint32_t timeout_milliseconds);
void {{ poll }}(SubscriptionHandle sub, uint64_t callback_data, StreamContinuationCallback callback);
void {{ unsubscribe }}(SubscriptionHandle sub);
void {{ free }}(SubscriptionHandle sub);
