default ValueAndTimestamp<V> get(K key, long asOfTimestamp) {
        throw new UnsupportedOperationException("get(key, timestamp) is only supported for versioned stores");
    }
Returns the latest record version, associated with the provided key, with timestamp
not exceeding the provided timestamp bound. This method may only be called if
{@link #isVersioned()} is true.
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KTableValueGetter.java