def add_arguments(parser):
parser.add_argument('<STR_LIT>', '<STR_LIT:-c>', metavar='<STR_LIT>',<EOL>help='<STR_LIT>')<EOL>parser.add_argument('<STR_LIT>', metavar='<STR_LIT>', nargs='<STR_LIT:?>',<EOL>help='<STR_LIT>'<EOL>'<STR_LIT>')<EOL>
Add command-line arguments for yakonfig proper.

    This is part of the :class:`~yakonfig.Configurable` interface, and
    is usually run by including :mod:`yakonfig` in the
    :func:`parse_args()` module list.

    :param argparse.ArgumentParser parser: command-line argument
      parser