ArgumentCaptor<String> hostCap = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<String> domCap = ArgumentCaptor.forClass(String.class);
        ArgumentCaptor<Integer> rnCap = ArgumentCaptor.forClass(Integer.class);

        verify(transport).getDfsReferrals(eq(ctx), nameCap.capture(), hostCap.capture(), domCap.capture(), rnCap.capture());

	hosts := strings.Split(r.Form.Get("hosts"), ",")
	byHost := strings.EqualFold(r.Form.Get("by-host"), "true")
	var hostMap map[string]struct{}
	if len(hosts) > 0 && hosts[0] != "" {
		hostMap = make(map[string]struct{}, len(hosts))
		for _, k := range hosts {
			if k != "" {
				hostMap[k] = struct{}{}
			}
		}
	}
	dID := r.Form.Get("by-depID")
	done := ctx.Done()
	ticker := time.NewTicker(interval)