code: private static Family findFamily(final FamS fams) {
          if (!fams.isSet()) {
              return new Family();
          }
          final Family foundFamily = (Family) fams.find(fams.getToString());
          if (foundFamily == null) {
              return new Family();
          }
          return foundFamily;
      }
docs: Get the family for this fams to build the navigator with.
  
  @param fams the fams
  @return the family