def add_arguments(self, parser):
        """
        Add arguments to the command parser.

        Uses argparse syntax.  See documentation at
        https://docs.python.org/3/library/argparse.html.
        """
        parser.add_argument(
            '--start', '-s',
            default=0,
            type=int,
            help=u"The Submission.id at which to begin updating rows. 0 by default."
        )
        parser.add_argument(
            '--chunk', '-c',
            default=1000,
            type=int,
            help=u"Batch size, how many rows to update in a given transaction. Default 1000.",
        )
        parser.add_argument(
            '--wait', '-w',
            default=2,
            type=int,
            help=u"Wait time between transactions, in seconds. Default 2.",
        )