class StoreChangeLogger {

    void logChange(final K key,
                   final V value) {
        logChange(key, value, context.timestamp());
    }

      StoreChangeLogger(final String storeName,
                      final ProcessorContext context,
                      final StateSerdes<K, V> serialization);
    private  StoreChangeLogger(final String storeName,
                              final ProcessorContext context,
                              final int partition,
                              final StateSerdes<K, V> serialization);

}