docs: public Entry<K,V> insertWithinLock(Entry<K,V> e, int _hash, int _keyValue) {
      K key = e.getKeyObj();
      int si = _hash & LOCK_MASK;
      Entry<K,V> f; Object ek; Entry<K,V>[] tab = entries;
      if (tab == null) {
        throw new CacheClosedException(cache);
      }
      int n = tab.length, _mask = n - 1, idx = _hash & (_mask);
      f = tab[idx];
      while (f != null) {
        if (f.hashCode == _keyValue && ((ek = f.getKeyObj()) == key || (ek.equals(key)))) {
          return f;
        }
        f = f.another;
      }
      e.another = tab[idx];
      tab[idx] = e;
      segmentSize[si].incrementAndGet();
      return e;
    }