code: func (gce *Cloud) SetURLMapForTargetHTTPSProxy(proxy *compute.TargetHttpsProxy, urlMap *compute.UrlMap) error {
  	op, err := gce.service.TargetHttpsProxies.SetUrlMap(gce.projectID, proxy.Name, &compute.UrlMapReference{UrlMap: urlMap.SelfLink}).Do()
  	if err != nil {
  		return err
  	}
  	return gce.waitForGlobalOp(op)
  }
docs: // SetURLMapForTargetHTTPSProxy sets the given URLMap for the given TargetHTTPSProxy.