code: func (w *Wrapper01) UnmarshalCQL(info gocql.TypeInfo, data []byte) error {
  
  	if len(data) > 0 {
  		_, ipPrefix, err := net.ParseCIDR(string(data))
  
  		if err != nil {
  			return err
  		}
  		w.ip = ipPrefix
  	}
  
  	return nil
  }
docs: // UnmarshalCQL deserializes the string representation of net.IPNet