code: func (n *Network) CreateAndJoinChannels(o *Orderer) {
  	for _, c := range n.Channels {
  		n.CreateAndJoinChannel(o, c.Name)
  	}
  }
docs: // CreateAndJoinChannels will create all channels specified in the config that
  // are referenced by peers. The referencing peers will then be joined to the
  // channel(s).
  //
  // The network must be running before this is called.