func pickMatchingGatewayHosts(gatewayServerHosts sets.Set[host.Name], virtualService config.Config) map[string]host.Name {
	matchingHosts := make(map[string]host.Name)
	virtualServiceHosts := virtualService.Spec.(*networking.VirtualService).Hosts
	for _, vsvcHost := range virtualServiceHosts {
		for gatewayHost := range gatewayServerHosts {
			gwHostnameForMatching := gatewayHost
			if strings.Contains(string(gwHostnameForMatching), "/") {

		if len(virtualHostWrapper.Routes) == 0 {
			continue
		}
		virtualHosts := make([]*route.VirtualHost, 0, len(virtualHostWrapper.VirtualServiceHosts)+len(virtualHostWrapper.Services))

		for _, hostname := range virtualHostWrapper.VirtualServiceHosts {
			if vhost := buildVirtualHost(hostname, virtualHostWrapper, nil); vhost != nil {
				virtualHosts = append(virtualHosts, vhost)
			}
		}