code: func GetAdminClient() (pb.AdminClient, error) {
  	peerClient, err := NewPeerClientFromEnv()
  	if err != nil {
  		return nil, err
  	}
  	return peerClient.Admin()
  }
docs: // GetAdminClient returns a new admin client.  The target address for
  // the client is taken from the configuration setting "peer.address"