code: def start(self):
      self.shell.exit_now = False
      super(IPythonKernel, self).start()
  
imports: import getpass
  import sys
  from IPython.core import release
  from ipython_genutils.py3compat import builtin_mod, PY3, unicode_type, safe_unicode
  from IPython.utils.tokenutil import token_at_cursor, line_at_cursor
  from traitlets import Instance, Type, Any, List, Bool
  from .comm import CommManager
  from .kernelbase import Kernel
  from .zmqshell import ZMQInteractiveShell
label_desc: Use image node_id 5 for calling the IPythonKernel obj's underlying member method code with example usage: obj.start() without return types