class_docstr: Test TOC Extension. 
class_docstr_tok: ["Test","TOC","Extension","."]
docstr: Test TOC without a Marker. 
docstr_tok: ["Test","TOC","without","a","Marker","."]
code: def testNoMarker(self):
      """Test TOC without a Marker."""
      text = "# Header 1\n\n## Header 2"
      self.assertEqual(
          self.md.convert(text),
          '<h1 id="header-1">Header 1</h1>\n'
          '<h2 id="header-2">Header 2</h2>',
      )
      self.assertEqual(
          self.md.toc,
          '<div class="toc">\n'
          "<ul>\n"  # noqa
          '<li><a href="#header-1">Header 1</a>'  # noqa
          "<ul>\n"  # noqa
          '<li><a href="#header-2">Header 2</a></li>\n'  # noqa
          "</ul>\n"  # noqa
          "</li>\n"  # noqa
          "</ul>\n"  # noqa
          "</div>\n",
      )
  
imports: import unittest
  import markdown
label_desc: Use image node_id 3 for calling the TestTOC obj's underlying member method code with example usage: obj.testNoMarker() without return types