public Collection<String> sourceTopicsForStore(final String storeName, final String topologyName) {
        return lookupBuilderForNamedTopology(topologyName).sourceTopicsForStore(storeName);
    }
@param storeName       the name of the state store
@param topologyName    the name of the topology to search for stores within
@return topics subscribed from source processors that are connected to these state stores
streams/src/main/java/org/apache/kafka/streams/processor/internals/TopologyMetadata.java