code: func (oc *OrdererClient) Broadcast() (ab.AtomicBroadcast_BroadcastClient, error) {
  	conn, err := oc.commonClient.NewConnection(oc.address, oc.sn)
  	if err != nil {
  		return nil, errors.WithMessage(err, fmt.Sprintf("orderer client failed to connect to %s", oc.address))
  	}
  	// TODO: check to see if we should actually handle error before returning
  	return ab.NewAtomicBroadcastClient(conn).Broadcast(context.TODO())
  }
docs: // Broadcast returns a broadcast client for the AtomicBroadcast service