code: public List<Attribute> getDefaultAttributes(String localName, String namespace) {
      if (defaultValuesCollector != null) {
        return defaultValuesCollector.getDefaultAttributes(localName, namespace);
      }
      return null;
    }
docs: Get the default attributes for an element.
  
  @param localName
  The element local name.
  @param namespace
  The element namespace. Use null or empty for no namespace.
  @return A list of Attribute objects or null if no defaults.