code: def setup(app):
      # a copy button to copy snippet of code from the documentation
      app.add_js_file("js/copybutton.js")
      app.add_css_file("basic.css")
  
imports: import sys
  import os
  import dabl
  import sphinx_rtd_theme
  from github_link import make_linkcode_resolve
  import sphinx
  from distutils.version import LooseVersion
label_desc: Use image node_id 1 for calling a global function with example usage: setup(app) without return types