code: def toc_directive(self, maxdepth=1):
          
          articles_directive_content = TC.toc.render(
              maxdepth=maxdepth,
              article_list=self.sub_article_folders,
          )
          return articles_directive_content
docs: Generate toctree directive text.
  
          :param table_of_content_header:
          :param header_bar_char:
          :param header_line_length:
          :param maxdepth:
          :return: