@Override
    public int throttleTimeMs() {
        return data.throttleTimeMs();
    }
Possible topic-level error codes:
 UnknownTopic (3)
 LeaderNotAvailable (5)
 InvalidTopic (17)
 TopicAuthorizationFailed (29)
Possible partition-level error codes:
 LeaderNotAvailable (5)
 ReplicaNotAvailable (9)
clients/src/main/java/org/apache/kafka/common/requests/MetadataResponse.java