code: def _not_found(_env, _start_resp):
      raise NotFound()
  
imports: import io
  import json
  import logging
  import socket
  from werkzeug import routing
  from werkzeug import serving
  from werkzeug import exceptions
  from werkzeug.middleware.shared_data import SharedDataMiddleware
  from werkzeug.wrappers import Request, Response
label_desc: Use image node_id 3 for calling the StaticBase obj's underlying member method code with example usage: obj._not_found(_env, _start_resp) without return types