/**
  * @param statType
  * @param statisticsStorage
  * @return Multiset<Integer> containing experiment counts across all efo attributes
  */
 public static Multiset<Integer> getScoresAcrossAllEfos(
     final StatisticsType statType, final StatisticsStorage statisticsStorage) {
   List<Attribute> efoAttrs = new ArrayList<Attribute>();
   for (String efo : statisticsStorage.getEfos()) {
     efoAttrs.add(new EfoAttribute(efo));
   }
   StatisticsQueryCondition statsQuery = new StatisticsQueryCondition(statType);
   statsQuery.and(getStatisticsOrQuery(efoAttrs, statType, 1, statisticsStorage));
   return getExperimentCounts(statsQuery, statisticsStorage, null);
 }