docs: public static XMLStreamException missingRequired(final XMLExtendedStreamReader reader, final Set<?> required) {
          Set<String> set = new HashSet<>();
          for (Object o : required) {
              String toString = o.toString();
              set.add(toString);
          }
          return wrapMissingRequiredAttribute(ControllerLogger.ROOT_LOGGER.missingRequiredAttributes(asStringList(required),
                                                                                                     reader.getLocation()),
                                              reader,
              set);
      }