code: public ValueHolder<V> resolve(ServerStoreProxy.ChainEntry entry, K key, long now) {
      return resolve(entry, key, now, 0);
    }
docs: Resolves the given key within the given chain entry to its current value.
  <p>
  This is exactly equivalent to calling {@link #resolve(ServerStoreProxy.ChainEntry, Object, long, int)} with a zero
  compaction threshold.
  
  @param entry target chain entry
  @param key target key
  @param now current time
  @return the current value