class_docstr: Base class for Jupyter applications
docstr: Launch an instance of a Jupyter Application
docstr_tok: ["Launch","an","instance","of","a","Jupyter","Application"]
code: def launch_instance(cls, argv=None, **kwargs):
      """Launch an instance of a Jupyter Application"""
      try:
          return super(JupyterApp, cls).launch_instance(
              argv=argv, **kwargs
          )
      except NoStart:
          return
  
imports: from __future__ import print_function
  from copy import deepcopy
  import logging
  import os
  import sys
  from traitlets.config.application import Application, catch_config_error
  from traitlets.config.loader import ConfigFileNotFound
  from traitlets import Unicode, Bool, List, observe
  from .utils import ensure_dir_exists
  from ipython_genutils import py3compat
  from .paths import jupyter_config_dir, jupyter_data_dir, jupyter_runtime_dir, jupyter_path, jupyter_config_path, allow_insecure_writes, issue_insecure_write_warning
label_desc: Use image node_id 16 for calling the JupyterApp obj's underlying member method code with example usage: obj.launch_instance(cls, argv) and returns: super