code: func FullMeshLinked(ctx context.Context, n int) (Mocknet, error) {
  	m, err := WithNPeers(ctx, n)
  	if err != nil {
  		return nil, err
  	}
  
  	if err := m.LinkAll(); err != nil {
  		return nil, err
  	}
  
  	return m, nil
  }
docs: // FullMeshLinked constructs a Mocknet with full mesh of Links.
  // This means that all the peers **can** connect to each other
  // (not that they already are connected. you can use m.ConnectAll())