code: func PickRandomNPeerConfigs(chPeers []fab.ChannelPeer, n int) []fab.PeerConfig {
  
  	var result []fab.PeerConfig
  	for _, index := range rand.Perm(len(chPeers)) {
  		result = append(result, chPeers[index].PeerConfig)
  		if len(result) == n {
  			break
  		}
  	}
  	return result
  }
docs: //PickRandomNPeerConfigs picks N random  unique peer configs from given channel peer list