class_docstr: Mark the magic as having argparse arguments and possibly adjust the
  name.
code: def __init__(self, name=None):
      self.name = name
  
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 magic_arguments object from inherited base classes: ArgDecorator with example: obj = magic_arguments(name)