void addSubscribedTopicsFromAssignment(final Set<TopicPartition> partitions, final String logPrefix) {
        applyToEachBuilder(b -> b.addSubscribedTopicsFromAssignment(partitions, logPrefix));
    }
@return    map from topology to its subtopologies and their topics info
streams/src/main/java/org/apache/kafka/streams/processor/internals/TopologyMetadata.java