text: public Set<String> getSet(Map<String,String> args, String name) {String s = args.remove(name);if (s == null) {return null;} else {Set<String> set = null;Matcher matcher = ITEM_PATTERN.matcher(s);if (matcher.find()) {set = new HashSet<>();set.add(matcher.group(0));while (matcher.find()) {set.add(matcher.group(0));}}return set;}}