code: public Set<Classification> getChildClassifications()
          throws CacheReloadException
      {
          final Set<Classification> ret = new HashSet<>();
          for (final Long id : this.children) {
              final Classification child = Classification.get(id);
              ret.add(child);
          }
          return Collections.unmodifiableSet(ret);
      }
docs: Getter method for instance variable {@link #childs}.
  @return value of instance variable {@link #childs}
  @throws CacheReloadException on error