code: func (gce *Cloud) CreateBackendService(bg *compute.BackendService) error {
  	op, err := gce.service.BackendServices.Insert(gce.projectID, bg).Do()
  	if err != nil {
  		return err
  	}
  	return gce.waitForGlobalOp(op)
  }
docs: // CreateBackendService creates the given BackendService.