class_docstr: Swap a running blocks class in a notebook with the latest cell contents.
code: def running_app(self) -> App:
      assert self.running_demo.server
      return self.running_demo.server.running_app
  
file_path: gradio/gradio/ipython_ext.py
imports: import gradio
  from gradio.networking import App
  from gradio.utils import BaseReloader
label_desc: Use image node_id 3 for calling the JupyterReloader obj's underlying member method code with example usage: obj.running_app() and returns: self