code: def run(self, root: etree.Element):
      pre = etree.SubElement(root, "pre")
      etree.SubElement(pre, "code")
  
imports: from markdown.test_tools import TestCase
  from markdown.extensions.codehilite import CodeHiliteExtension, CodeHilite
  from markdown import extensions, treeprocessors
  import os
  import xml.etree.ElementTree
label_desc: Use image node_id 1 for calling the _AddCodeTagTreeprocessor obj's underlying member method code with example usage: obj.run(root) without return types