final CharMappingItem item = new CharMappingItem(id, inputs, output);

                if (updater != null) {
                    final CharMappingItem newItem = updater.write(item);
                    if (newItem != null) {
                        itemList.add(newItem);
                    } else {
                        id--;
                    }
                } else {
                    itemList.add(item);

                if (updater != null) {
                    final StemmerOverrideItem newItem = updater.write(item);
                    if (newItem != null) {
                        itemList.add(newItem);
                    } else {
                        id--;
                    }
                } else {
                    itemList.add(item);

            new_value = []
            for item in value:
                if isinstance(item, dict):
                    new_item = _replace_refs(
                        schema=item,
                        old_name_to_new_name_map=old_name_to_new_name_map,
                    )
                    new_value.append(new_item)

                else:
                    new_value.append(item)
            new_schema[key] = new_value