code: @Override
    public Iterator<ResourceRecordSet<?>> iterateByName(String name) {
      Filter<ResourceRecordSet<?>> filter = andNotAlias(nameEqualTo(name));
      return lazyIterateRRSets(api.listResourceRecordSets(zoneId, name), filter);
    }
docs: lists and lazily transforms all record sets for a name which are not aliases into denominator
  format.