# File lib/maruku/toc.rb, line 86
    def _to_html
      ul = MaRuKu::Out::HTML::HTMLElement.new('ul')
      @section_children.each do |c|
        li = MaRuKu::Out::HTML::HTMLElement.new('li')
        if span = c.header_element.render_section_number
          li << span
        end

        a = c.header_element.wrap_as_element('a')
        a.attributes.delete('id')
        a['href'] = "##{c.header_element.attributes[:id]}"

        li << a
        li << c._to_html if c.section_children.size > 0
        ul << li
      end
      ul
    end