docs: public static List<Map<String, Object>> nest(String key, Dictionary<String, Object> map) {
          List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();
          String patternString = MessageFormat.format("^{0}\\.([0-9]*)\\.(.*)", Pattern.quote(key));
          Pattern pattern = Pattern.compile(patternString);
  
          for (Enumeration<String> e = map.keys(); e.hasMoreElements();) {
              String k = e.nextElement();
              Matcher matcher = pattern.matcher(k);
              if (matcher.matches()) {
                  int base = 0;
                  processMatch(result, map.get(k), matcher, base);
              }
          }
          return result;
      }