if (testTransferListener != null) {
            testTransferListener.addTransfer(resourceName);
        }
    }

    public boolean getIfNewer(String resourceName, File destination, long timestamp)
            throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException {
        if (!insideGet) {
            addTransfer("getIfNewer " + resourceName);
        }

	// since the IP is normally the same), we SNAT identified host probes in the host netns to a fixed
	// APIPA/"link-local" IP.
	//
	// It doesn't matter what this IP is, so long as it's not routable and doesn't collide with anything else.
	//
	// IPv6 link local ranges are designed to be collision-resistant by default, and so probably never need to be overridden
	DefaultHostProbeSNATIP   = "169.254.7.127"