code: def setup(app):
      app.add_css_file("fix_rtd.css")
      app.add_config_value(
          "recommonmark_config",
          {
              "auto_toc_tree_section": "Contents",
              "enable_math": True,
              "enable_inline_math": True,
              "enable_eval_rst": True,
          },
          True,
      )
      app.add_transform(AutoStructify)
      app.add_source_suffix(".md", "markdown")
      app.add_source_parser(CommonMarkParser)
  
imports: import sys
  from recommonmark.parser import CommonMarkParser
  from recommonmark.transform import AutoStructify
label_desc: Use image node_id 1 for calling a global function with example usage: setup(app) without return types