'invoke-after-get' => sub {
        my($robot, $hook, $url, $response) = @_;
        
        if (DEBUG) {
            print "ORIG_URL: $url\n";
            print "URL: "; for($response->header_field_names) { print "$_\n"; }  print "\n";
            print "RESPONSE: ". $response->code ."\n";
            print "\n";
        }