class_docstr: Provide other keywords to the sub-parser constructor.
      
code: def __init__(self, **kwds):
      self.kwds = kwds
  
imports: import argparse
  import re
  from IPython.core.error import UsageError
  from IPython.utils.decorators import undoc
  from IPython.utils.process import arg_split
  from IPython.utils.text import dedent
label_desc: Use image node_id 1 to create a new kwds object from inherited base classes: ArgDecorator with example: obj = kwds()