public boolean isNamedTopology() {
        return topologyName != null;
    }
@return the DslStoreSuppliers if the value was explicitly configured (either by
        {@link StreamsConfig#DEFAULT_DSL_STORE} or {@link StreamsConfig#DSL_STORE_SUPPLIERS_CLASS_CONFIG})
streams/src/main/java/org/apache/kafka/streams/TopologyConfig.java