code: def html_page_context(app, pagename, templatename, context, doctree):
      ''' Collect page names for the sitemap as HTML pages are built.
  
      '''
      site = context['SITEMAP_BASE_URL']
      version = context['version']
      app.sitemap_links.add(site + version + '/' + pagename + ".html"f html_page_context(app, pagename, templatename, context, doctree):
      ''' Collect page names for the sitemap as HTML pages are built.
  
      '''
      site = context['SITEMAP_BASE_URL']
      version = context['version']
      app.sitemap_links.add(site + version + '/' + pagename + ".html")
docs: Collect page names for the sitemap as HTML pages are built.