protected String formatIterable(JCDiagnostic d,Iterable<?> it,Locale l){
  StringBuilder sbuf=new StringBuilder();
  String sep="";
  for (  Object o : it) {
    sbuf.append(sep);
    sbuf.append(formatArgument(d,o,l));
    sep=",";
  }
  return sbuf.toString();
}

protected String formatIterable ( JCDiagnostic d , Iterable < ? > it , Locale l ) { StringBuilder sbuf = new StringBuilder ( ) ; String sep = "" ; for ( Object o : it ) { sbuf . append ( sep ) ; sbuf . append ( formatArgument ( d , o , l ) ) ; sep = "," ; } return sbuf . toString ( ) ; }
format an iterable argument of a given diagnostic .
