code: public static ZoneTransferIn
  newAXFR(Name zone, SocketAddress address, TSIG key) {
  	return new ZoneTransferIn(zone, Type.AXFR, 0, false, address, key);
  }
docs: Instantiates a ZoneTransferIn object to do an AXFR (full zone transfer).
  @param zone The zone to transfer.
  @param address The host/port from which to transfer the zone.
  @param key The TSIG key used to authenticate the transfer, or null.
  @return The ZoneTransferIn object.