public static ZoneTransferIn
newAXFR(Name zone, SocketAddress address, TSIG key) {
	return new ZoneTransferIn(zone, Type.AXFR, 0, false, address, key);
}
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.
src/main/java/core/org/xbill/DNS/ZoneTransferIn.java