}

func ExtractListener(name string, ll []*listener.Listener) *listener.Listener {
	for _, l := range ll {
		if l.Name == name {
			return l
		}
	}
	return nil
}

func ExtractVirtualHosts(rc *route.RouteConfiguration) map[string][]string {
	res := map[string][]string{}
	for _, vh := range rc.GetVirtualHosts() {
		var dests []string
		for _, r := range vh.Routes {

						exp = tt.expectedGateway
					}
					if vh == nil && exp != nil {
						t.Fatalf("route %q not found, have %v", tt.routeName, xdstest.MapKeys(r))
					}
					gotHosts := xdstest.ExtractVirtualHosts(vh)
					for wk, wv := range exp {
						got := gotHosts[wk]
						if !reflect.DeepEqual(wv, got) {
							t.Errorf("%q: wanted %v, got %v (had %v)", wk, wv, got, xdstest.MapKeys(gotHosts))
						}