code: func (n *Network) AnchorsForChannel(chanName string) []*Peer {
  	anchors := []*Peer{}
  	for _, p := range n.Peers {
  		for _, pc := range p.Channels {
  			if pc.Name == chanName && pc.Anchor {
  				anchors = append(anchors, p)
  			}
  		}
  	}
  	return anchors
  }
docs: // AnchorsForChannel returns all Peer instances that are anchors for the
  // named channel.