code: def setup(app):
      app.add_stylesheet("custom.css")
      app.add_javascript("js/copybutton.js")
  
file_path: pyts/doc/conf.py
imports: import sys
  import os
  import warnings
  import sphinx_gallery
  from sphinx_gallery.sorting import ExampleTitleSortKey
  import sphinx
  from distutils.version import LooseVersion
  from pyts import __version__
label_desc: Use image node_id 1 for calling a global function with example usage: setup(app) without return types