}
	// just check if any of the required fields are set
	optsSpecified := c.opts.Port.Name != "" || c.opts.Port.Protocol != "" || c.opts.Scheme != ""
	if optsSpecified && len(c.children) > 0 {
		t.Fatal("TrafficTestCase: must not specify both opts and children")
	}
	if !optsSpecified && len(c.children) == 0 {
		t.Fatal("TrafficTestCase: must specify either opts or children")
	}