@Nullable
    private static String getDescription(Extension extension) {
      final DomFixedChildDescription description = extension.getGenericInfo().getFixedChildDescription("description");
      if (description == null) return null;
      final DomElement element = ContainerUtil.getFirstItem(description.getValues(extension));
      return element instanceof GenericDomValue ? ((GenericDomValue<?>)element).getStringValue() : null;
    }
@Nullable
    private static String getDescription(Extension extension)