code: private static List<Field> findFields() {
          List<Field> result = new ArrayList<Field>();
          for (Field f : LoadStatistics.class.getFields()) {
              if (Modifier.isPublic(f.getModifiers()) && MultiStageTimeSeries.class.isAssignableFrom(f.getType())
                      && f.getAnnotation(Deprecated.class) == null) {
                  result.add(f);
              }
          }
          return result;
      }
docs: The fields that a {@link LoadStatistics} has change as you move from pre-1.607 to post 1.607, so better to
  just look and see what there is rather than hard-code.
  
  @return the fields that correspond to {@link MultiStageTimeSeries}