class_docstr: An autocallable object which will be added to the user namespace so that
  exit, exit(), quit or quit() are all valid ways to close the shell.
code: def __call__(self):
      self._ip.ask_exit()
  
file_path: catboost/contrib/python/ipython/py2/IPython/core/autocall.py
label_desc: Use image node_id 1 for calling the ExitAutocall obj's underlying member method code with example usage: obj.__call__() without return types