docs: static DirectQuickSelectSketch fastWritableWrap(final WritableMemory srcMem, final long seed) {
      final int lgNomLongs = extractLgNomLongs(srcMem);                   //byte 3
      final int lgArrLongs = extractLgArrLongs(srcMem);                   //byte 4
  
      final DirectQuickSelectSketch dqss =
          new DirectQuickSelectSketch(seed, srcMem);
      dqss.hashTableThreshold_ = setHashTableThreshold(lgNomLongs, lgArrLongs);
      return dqss;
    }