code: private Map<String, List<NumberPattern>> getPluralNumberPattern(JsonObject node) {
      Map<String, List<NumberPattern>> result = new LinkedHashMap<>();
      for (Map.Entry<String, JsonElement> entry : node.entrySet()) {
        String key = entry.getKey();
        String value = entry.getValue().getAsString();
        List<NumberPattern> formats = getNumberPattern(value);
        result.put(key, formats);
      }
      return result;
    }
docs: Parse groups of related formats whose keys include a plural category for the locale.
  EN:
  1000-count-one       "0 thousand"
  1000-count-other     "0 thousand"
  FR:
  1000-count-one       "0 millier"
  1000-count-other     "0 mille"