func (env *azureEnviron) deleteInternalSubnet() error { client := network.SubnetsClient{env.network} subnetName := env.resourceGroup result, err := client.Delete( env.controllerResourceGroup, internalNetworkName, subnetName, ) if err != nil { if result.Response == nil || result.StatusCode != http.StatusNotFound { return errors.Annotatef(err, "deleting subnet %q", subnetName) } } return nil }