class_docstr: Add sane lists to Markdown. 
docstr: Override existing Processors. 
docstr_tok: ["Override","existing","Processors","."]
code: def extendMarkdown(self, md):
      """Override existing Processors."""
      md.parser.blockprocessors.register(
          SaneOListProcessor(md.parser), "olist", 40
      )
      md.parser.blockprocessors.register(
          SaneUListProcessor(md.parser), "ulist", 30
      )
  
file_path: markdown/markdown/extensions/sane_lists.py
imports: from __future__ import annotations
  from .None import Extension
  from ..blockprocessors import OListProcessor, UListProcessor
  import re
  from typing import TYPE_CHECKING
label_desc: Use image node_id 1 for calling the SaneListExtension obj's underlying member method code with example usage: obj.extendMarkdown(md) without return types