message: manual loop, use std::move
  Summary: As in the title, no need to copy.
diff: @@ -172,12 +172,18 @@ void MethodSimilarityOrderer::compute_score() {
  }
  }
  + if (!score_map.empty()) {
  + std::map<ScoreValue, boost::dynamic_bitset<>,
  + std::greater<ScoreValue>>
  + map;
  // Mapping from score value (key) to Method Ids. The key is in a
  // decreasing score order. Becuase it iterates Method Id in order,
  // the vector is already sorted by Method index (source order).
  - std::map<ScoreValue, boost::dynamic_bitset<>, std::greater<ScoreValue>>
  - map(score_map.begin(), score_map.end());
  + for (auto&& [score_value, method_ids] : score_map) {
  + map[score_value] = std::move(method_ids);
  + }
  m_score_map[i] = std::move(map);
  + }
  },
  indices);
  }
  