code: def setup(app: Sphinx):
      app.connect("html-page-context", html_page_context)
  
file_path: pyqtgraph/doc/source/conf.py
imports: import os
  import sys
  import time
  from datetime import datetime
  from sphinx.application import Sphinx
  import pyqtgraph
label_desc: Use image node_id 2 for calling a global function with example usage: setup(app) without return types