code: func (os *OpenStack) NewNetworkV2() (*gophercloud.ServiceClient, error) {
  	network, err := openstack.NewNetworkV2(os.provider, gophercloud.EndpointOpts{
  		Region: os.region,
  	})
  	if err != nil {
  		glog.Warningf("Failed to find network v2 endpoint: %v", err)
  		return nil, err
  	}
  	return network, nil
  }
docs: // NewNetworkV2 creates a new Network V2 endpoint