code: func (g *Cloud) CreateGlobalBackendService(bg *compute.BackendService) error {
  	ctx, cancel := cloud.ContextWithCallTimeout()
  	defer cancel()
  
  	mc := newBackendServiceMetricContext("create", "")
  	return mc.Observe(g.c.BackendServices().Insert(ctx, meta.GlobalKey(bg.Name), bg))
  }
docs: // CreateGlobalBackendService creates the given BackendService.