@Override
        public KeyValueIterator<Windowed<K>, V> fetchAll(final long timeFrom,
                                                         final long timeTo) {
            return fetchAll(Instant.ofEpochMilli(timeFrom), Instant.ofEpochMilli(timeTo));
        }
Close the driver, its topology, and all processors.
streams/test-utils/src/main/java/org/apache/kafka/streams/TopologyTestDriver.java