code: func (g *Cloud) DeleteRegionBackendService(name, region string) error {
  	ctx, cancel := cloud.ContextWithCallTimeout()
  	defer cancel()
  
  	mc := newBackendServiceMetricContext("delete", region)
  	return mc.Observe(g.c.RegionBackendServices().Delete(ctx, meta.RegionalKey(name, region)))
  }
docs: // DeleteRegionBackendService deletes the given BackendService by name.