<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def AddPerformanceOptions(self, argument_group):
 """Adds the performance options to the argument group. Args: argument_group (argparse._ArgumentGroup):
 argparse argument group. """

    argument_group.add_argument(
        '--buffer_size', '--buffer-size', '--bs', dest='buffer_size',
        action='store', default=0, help=(
            'The buffer size for the output (defaults to 196MiB).'))

    argument_group.add_argument(
        '--queue_size', '--queue-size', dest='queue_size', action='store',
        default=0, help=(
            'The maximum number of queued items per worker '
            '(defaults to {0:d})').format(self._DEFAULT_QUEUE_SIZE))