code: func (os *OpenStack) NewComputeV2() (*gophercloud.ServiceClient, error) {
  	compute, err := openstack.NewComputeV2(os.provider, gophercloud.EndpointOpts{
  		Region: os.region,
  	})
  	if err != nil {
  		glog.Warningf("Failed to find compute v2 endpoint: %v", err)
  		return nil, err
  	}
  	return compute, nil
  }
docs: // NewComputeV2 creates a new Compute V2 endpoint