How to use the openpifpaf.decoder function in openpifpaf

def cli():
    parser = argparse.ArgumentParser(
        description=__doc__,
        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
    )
    openpifpaf.decoder.cli(parser, force_complete_pose=False,
                           instance_threshold=0.1, seed_threshold=0.5)
    openpifpaf.network.nets.cli(parser)
    parser.add_argument('--disable-cuda', action='store_true',
                        help='disable CUDA')
    parser.add_argument('--resolution', default=0.4, type=float,
                        help=('Resolution prescale factor from 640x480. '
                              'Will be rounded to multiples of 16.'))
    parser.add_argument('--write-static-page', default=None,
                        help='directory in which to create a static version of this page')
    parser.add_argument('--debug', default=False, action='store_true',
                        help='debug messages and autoreload')
    parser.add_argument('--google-analytics',
                        help='provide a google analytics id to inject analytics code')

    parser.add_argument('--host', dest='host',
                        default=os.environ.get('HOST', '127.0.0.1'),