code: public List
  getOptions(int code) {
  	if (options == null)
  		return Collections.EMPTY_LIST;
  	List list = Collections.EMPTY_LIST;
  	for (Iterator it = options.iterator(); it.hasNext(); ) {
  		EDNSOption opt = (EDNSOption) it.next();
  		if (opt.getCode() == code) {
  			if (list == Collections.EMPTY_LIST)
  				list = new ArrayList();
  			list.add(opt);
  		}
  	}
  	return list;
  }
docs: Gets all options in the OPTRecord with a specific code.  This returns a list
  of EDNSOptions.