code: func NewIATA(iaid [4]byte, options dhcp6.Options) *IATA {
  	if options == nil {
  		options = make(dhcp6.Options)
  	}
  
  	return &IATA{
  		IAID:    iaid,
  		Options: options,
  	}
  }
docs: // NewIATA creates a new IATA from an IAID and an Options map.  If an Options
  // map is not specified, a new one will be allocated.