class_docstr: Base class to define a wrapper for ArgumentParser method.
  
  Child class must define either `_method_name` or `add_to_parser`.
docstr: Add this object's information to the parser.
          
docstr_tok: ["Add","this","object","'s","information","to","the","parser","."]
code: def add_to_parser(self, parser, group):
      """Add this object's information to the parser."""
      if group is not None:
          parser = group
      getattr(parser, self._method_name)(*self.args, **self.kwds)
      return None
  
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 2 for calling the ArgMethodWrapper obj's underlying member method code with example usage: obj.add_to_parser(parser, group) and returns: None