code: def setup(app):
      ''' Required Sphinx extension setup function. '''
      app.add_node(
          bokehjs_content,
          html=(
              html_visit_bokehjs_content,
              html_depart_bokehjs_content
          )
      )
      app.add_directive('bokehjs-content', BokehJSContentf setup(app):
      ''' Required Sphinx extension setup function. '''
      app.add_node(
          bokehjs_content,
          html=(
              html_visit_bokehjs_content,
              html_depart_bokehjs_content
          )
      )
      app.add_directive('bokehjs-content', BokehJSContent)
docs: Required Sphinx extension setup function.