docs: public List<Long> getSitesForPartitions(int[] partitions) {
          ArrayList<Long> all_sites = new ArrayList<Long>();
          for (int p : partitions) {
              List<Long> sites = getSitesForPartition(p);
              for (long site : sites)
              {
                  all_sites.add(site);
              }
          }
          return all_sites;
      }