class_docstr: Base class for Jupyter applications
code: def _jupyter_path_default(self) -> list[str]:
      return jupyter_path()
  
imports: from __future__ import annotations
  import logging
  import os
  import sys
  import typing
  from copy import deepcopy
  from pathlib import Path
  from shutil import which
  from traitlets import Bool, List, Unicode, observe
  from traitlets.config.application import Application, catch_config_error
  from traitlets.config.loader import ConfigFileNotFound
  from .paths import allow_insecure_writes, issue_insecure_write_warning, jupyter_config_dir, jupyter_config_path, jupyter_data_dir, jupyter_path, jupyter_runtime_dir
  from .utils import ensure_dir_exists, ensure_event_loop
label_desc: Use image node_id 2 for calling the JupyterApp obj's underlying member method code with example usage: obj._jupyter_path_default() and returns: jupyter_path