private static String listify(final Collection<String> registers){
  final List<String> registerList=new ArrayList<String>(registers);
  Collections.sort(registerList);
  return Commafier.commafy(registerList);
}

private static String listify ( final Collection < String > registers ) { final List < String > registerList = new ArrayList < String > ( registers ) ; Collections . sort ( registerList ) ; return Commafier . commafy ( registerList ) ; }
turns a collection of registers into a csv string . needed because we return collections instead of lists now . . .
