code: func (n *NetNs) Initialize() (NetNsIface, error) {
  	netNS, err := ns.NewNS()
  	if err != nil {
  		return nil, err
  	}
  	n.netNS = netNS
  	n.closed = false
  	n.initialized = true
  	return n, nil
  }
docs: // Initialize does the necessary setup for a NetNs