default KeyValueIterator<Windowed<K>, V> backwardFetchAll(final long timeFrom, final long timeTo) {
        throw new UnsupportedOperationException();
    }
Gets all the key-value pairs that belong to the windows within in the given time range.

@param timeFrom the beginning of the time slot from which to search (inclusive)
@param timeTo   the end of the time slot from which to search (inclusive)
@return an iterator over windowed key-value pairs {@code <Windowed<K>, value>}
@throws InvalidStateStoreException if the store is not initialized
streams/src/main/java/org/apache/kafka/streams/state/WindowStore.java