Review

class ReqExclScorer {
  public Explanation explain(int doc) throws IOException {
    Explanation res = new Explanation();
    if (exclDisi.advance(doc) == doc) {
      res.setDescription("excluded");
    } else {
      res.setDescription("not excluded");
      res.addDetail(reqScorer.explain(doc));
    }
    return res;
  }

}