code: public Page<RecordSet> listRecordSets(Dns.RecordSetListOption... options) {
      return dns.listRecordSets(getName(), options);
    }
docs: Lists all {@link RecordSet}s associated with this zone. The method searches for zone by name.
  
  @param options optional restriction on listing and fields of {@link RecordSet}s returned
  @return a page of record sets
  @throws DnsException upon failure or if the zone is not found