def METHOD_NAME():
    _, PERCEVAL_CMDS = perceval.backend.find_backends(perceval.backends)
    args = parse_args(PERCEVAL_CMDS)
    if args.backend not in PERCEVAL_CMDS:
        raise RuntimeError("Unknown backend %s" % args.backend)
    configure_logging(args.debug)
    logging.info("Sir Perceval is on his quest.")
    klass = PERCEVAL_CMDS[args.backend]
    cmd = klass(*args.backend_args, debug=args.debug)
    cmd.run()
    logging.info("Sir Perceval completed his quest.")