docs: static UnionImpl initNewDirectInstance(
        final int lgNomLongs,
        final long seed,
        final float p,
        final ResizeFactor rf,
        final MemoryRequestServer memReqSvr,
        final WritableMemory dstMem) {
      final UpdateSketch gadget = new DirectQuickSelectSketch(
          lgNomLongs, seed, p, rf, memReqSvr, dstMem, true); //create with UNION family
      final UnionImpl unionImpl = new UnionImpl(gadget, seed);
      unionImpl.unionThetaLong_ = gadget.getThetaLong();
      unionImpl.unionEmpty_ = gadget.isEmpty();
      return unionImpl;
    }