void SubscriberImpl::unsubscribe(const std::string& topic, const std::string& subscriberId) {
SyncOperationCallback* cb = new SyncOperationCallback(client->getConfiguration().getInt(Configuration::SYNC_REQUEST_TIMEOUT,
DEFAULT_SYNC_REQUEST_TIMEOUT));
OperationCallbackPtr callback(cb);
asyncUnsubscribe(topic, subscriberId, callback);
cb->wait();
cb->throwExceptionIfNeeded();
}
void SubscriberImpl::subscribe(const std::string& topic, const std::string& subscriberId, const SubscriptionOptions& options) {
SyncOperationCallback* cb = new SyncOperationCallback(
channelManager->getConfiguration().getInt(Configuration::SYNC_REQUEST_TIMEOUT,
DEFAULT_SYNC_REQUEST_TIMEOUT));
OperationCallbackPtr callback(cb);
asyncSubscribe(topic, subscriberId, options, callback);
cb->wait();
cb->throwExceptionIfNeeded();
}