public S3StreamsMetadataDelta getOrCreateStreamsMetadataDelta() {
        if (s3StreamsMetadataDelta == null) {
            s3StreamsMetadataDelta = new S3StreamsMetadataDelta(image.streamsMetadata());
        }
        return s3StreamsMetadataDelta;
    }
A change to the broker metadata image.
metadata/src/main/java/org/apache/kafka/image/MetadataDelta.java