How to use the labgrid.remote.client.ClientSession function in labgrid

help='fastboot arguments')
    subparser.add_argument('--wait', type=float, default=10.0)
    subparser.set_defaults(func=ClientSession.fastboot)

    subparser = subparsers.add_parser('bootstrap',
                                      help="start a bootloader")
    subparser.add_argument('-w', '--wait', type=float, default=10.0)
    subparser.add_argument('filename', help='filename to boot on the target')
    subparser.add_argument('bootstrap_args', metavar='ARG', nargs=argparse.REMAINDER,
                           help='extra bootstrap arguments')
    subparser.set_defaults(func=ClientSession.bootstrap)

    subparser = subparsers.add_parser('sd-mux',
                                      help="switch USB SD Muxer")
    subparser.add_argument('action', choices=['dut', 'host', 'off', 'client'])
    subparser.set_defaults(func=ClientSession.sd_mux)

    subparser = subparsers.add_parser('ssh',
                                      help="connect via ssh (with optional arguments)")
    subparser.set_defaults(func=ClientSession.ssh)

    subparser = subparsers.add_parser('telnet',
                                      help="connect via telnet")
    subparser.set_defaults(func=ClientSession.telnet)

    subparser = subparsers.add_parser('video',
                                      help="start a video stream")
    subparser.add_argument('-q', '--quality', type=str,
                           help="select a video quality (use 'list' to show options)")
    subparser.set_defaults(func=ClientSession.video)

    subparser = subparsers.add_parser('tmc', help="control a USB TMC device")

'-P',
        '--proxy',
        type=str,
        help="proxy connections via given ssh host"
    )
    subparsers = parser.add_subparsers(
        dest='command',
        title='available subcommands',
        metavar="COMMAND",
    )

    subparser = subparsers.add_parser('help')

    subparser = subparsers.add_parser('complete')
    subparser.add_argument('type', choices=['resources', 'places'])
    subparser.set_defaults(func=ClientSession.complete)

    subparser = subparsers.add_parser('monitor',
                                      help="monitor events from the coordinator")
    subparser.set_defaults(func=ClientSession.do_monitor)

    subparser = subparsers.add_parser('resources', aliases=('r',),
                                      help="list available resources")
    subparser.add_argument('-a', '--acquired', action='store_true')
    subparser.add_argument('-e', '--exporter')
    subparser.add_argument('--sort-by-matched-place-change', action='store_true',
                           help="sort by matched place's changed date (oldest first) and show place and date")  # pylint: disable=line-too-long
    subparser.add_argument('match', nargs='?')
    subparser.set_defaults(func=ClientSession.print_resources)

    subparser = subparsers.add_parser('places', aliases=('p',),
                                      help="list available places")

def make(*args, **kwargs):
        nonlocal session
        session[0] = ClientSession(*args, **kwargs)
        return session[0]

help="skip n 512-sized blocks at start of input")
    subparser.add_argument('--seek', type=int, default=0,
                           help="skip n 512-sized blocks at start of output")
    subparser.add_argument('filename', help='filename to boot on the target')
    subparser.set_defaults(func=ClientSession.write_image)

    subparser = subparsers.add_parser('reserve', help="create a reservation")
    subparser.add_argument('--wait', action='store_true',
                           help="wait until the reservation is allocated")
    subparser.add_argument('--shell', action='store_true',
                           help="format output as shell variables")
    subparser.add_argument('--prio', type=float, default=0.0,
                           help="priority relative to other reservations (default 0)")
    subparser.add_argument('filters', metavar='KEY=VALUE', nargs='+',
                           help="required tags")
    subparser.set_defaults(func=ClientSession.create_reservation)

    subparser = subparsers.add_parser('cancel-reservation', help="cancel a reservation")
    subparser.add_argument('token', type=str, default=token, nargs='?' if token else None)
    subparser.set_defaults(func=ClientSession.cancel_reservation)

    subparser = subparsers.add_parser('wait', help="wait for a reservation to be allocated")
    subparser.add_argument('token', type=str, default=token, nargs='?' if token else None)
    subparser.set_defaults(func=ClientSession.wait_reservation)

    subparser = subparsers.add_parser('reservations', help="list current reservations")
    subparser.set_defaults(func=ClientSession.print_reservations)

    # make any leftover arguments available for some commands
    args, leftover = parser.parse_known_args()
    if args.command not in ['ssh']:
        args = parser.parse_args()

help="generate a labgrid environment file for a place")
    subparser.set_defaults(func=ClientSession.print_env)

    subparser = subparsers.add_parser('power',
                                      aliases=('pw',),
                                      help="change (or get) a place's power status")
    subparser.add_argument('action', choices=['on', 'off', 'cycle', 'get'])
    subparser.add_argument('-t', '--delay', type=float, default=1.0,
                           help='wait time in seconds between off and on during cycle')
    subparser.set_defaults(func=ClientSession.power)

    subparser = subparsers.add_parser('io',
                                      help="change (or get) a digital IO status")
    subparser.add_argument('action', choices=['high', 'low', 'get'], help="action")
    subparser.add_argument('name', help="optional resource name", nargs='?')
    subparser.set_defaults(func=ClientSession.digital_io)

    subparser = subparsers.add_parser('console',
                                      aliases=('con',),
                                      help="connect to the console")
    subparser.add_argument('-l', '--loop', action='store_true',
                           help="keep trying to connect if the console is unavailable")
    subparser.add_argument('name', help="optional resource name", nargs='?')
    subparser.set_defaults(func=ClientSession.console)

    subparser = subparsers.add_parser('fastboot',
                                      help="run fastboot")
    subparser.add_argument('fastboot_args', metavar='ARG', nargs=argparse.REMAINDER,
                           help='fastboot arguments')
    subparser.add_argument('--wait', type=float, default=10.0)
    subparser.set_defaults(func=ClientSession.fastboot)

subparser = subparsers.add_parser('set-tags',
                                      help="update the place tags")
    subparser.add_argument('tags', metavar='KEY=VALUE', nargs='+',
                           help="use an empty value for deletion")
    subparser.set_defaults(func=ClientSession.set_tags)

    subparser = subparsers.add_parser('add-match',
                                      help="add one (or multiple) match pattern(s) to a place")
    subparser.add_argument('patterns', metavar='PATTERN', nargs='+')
    subparser.set_defaults(func=ClientSession.add_match)

    subparser = subparsers.add_parser('del-match',
                                      help="delete one (or multiple) match pattern(s) from a place")
    subparser.add_argument('patterns', metavar='PATTERN', nargs='+')
    subparser.set_defaults(func=ClientSession.del_match)

    subparser = subparsers.add_parser('add-named-match',
                                      help="add one match pattern with a name to a place")
    subparser.add_argument('pattern', metavar='PATTERN')
    subparser.add_argument('name', metavar='NAME')
    subparser.set_defaults(func=ClientSession.add_named_match)

    subparser = subparsers.add_parser('acquire',
                                      aliases=('lock',),
                                      help="acquire a place")
    subparser.set_defaults(func=ClientSession.acquire)

    subparser = subparsers.add_parser('release',
                                      aliases=('unlock',),
                                      help="release a place")
    subparser.add_argument('-k', '--kick', action='store_true',

subparser.add_argument('-e', '--exporter')
    subparser.add_argument('--sort-by-matched-place-change', action='store_true',
                           help="sort by matched place's changed date (oldest first) and show place and date")  # pylint: disable=line-too-long
    subparser.add_argument('match', nargs='?')
    subparser.set_defaults(func=ClientSession.print_resources)

    subparser = subparsers.add_parser('places', aliases=('p',),
                                      help="list available places")
    subparser.add_argument('-a', '--acquired', action='store_true')
    subparser.add_argument('--sort-last-changed', action='store_true',
                           help='sort by last changed date (oldest first)')
    subparser.set_defaults(func=ClientSession.print_places)

    subparser = subparsers.add_parser('who',
                                      help="list acquired places by user")
    subparser.set_defaults(func=ClientSession.print_who)

    subparser = subparsers.add_parser('show',
                                      help="show a place and related resources")
    subparser.set_defaults(func=ClientSession.print_place)

    subparser = subparsers.add_parser('create', help="add a new place")
    subparser.set_defaults(func=ClientSession.add_place)

    subparser = subparsers.add_parser('delete', help="delete an existing place")
    subparser.set_defaults(func=ClientSession.del_place)

    subparser = subparsers.add_parser('add-alias',
                                      help="add an alias to a place")
    subparser.add_argument('alias')
    subparser.set_defaults(func=ClientSession.add_alias)

subparser = subparsers.add_parser('create', help="add a new place")
    subparser.set_defaults(func=ClientSession.add_place)

    subparser = subparsers.add_parser('delete', help="delete an existing place")
    subparser.set_defaults(func=ClientSession.del_place)

    subparser = subparsers.add_parser('add-alias',
                                      help="add an alias to a place")
    subparser.add_argument('alias')
    subparser.set_defaults(func=ClientSession.add_alias)

    subparser = subparsers.add_parser('del-alias',
                                      help="delete an alias from a place")
    subparser.add_argument('alias')
    subparser.set_defaults(func=ClientSession.del_alias)

    subparser = subparsers.add_parser('set-comment',
                                      help="update the place comment")
    subparser.add_argument('comment', nargs='+')
    subparser.set_defaults(func=ClientSession.set_comment)

    subparser = subparsers.add_parser('set-tags',
                                      help="update the place tags")
    subparser.add_argument('tags', metavar='KEY=VALUE', nargs='+',
                           help="use an empty value for deletion")
    subparser.set_defaults(func=ClientSession.set_tags)

    subparser = subparsers.add_parser('add-match',
                                      help="add one (or multiple) match pattern(s) to a place")
    subparser.add_argument('patterns', metavar='PATTERN', nargs='+')
    subparser.set_defaults(func=ClientSession.add_match)

tmc_subparser.set_defaults(func=ClientSession.tmc_screen)

    tmc_subparser = tmc_subparsers.add_parser('channel', help="use a channel")
    tmc_subparser.add_argument('channel', type=int)
    tmc_subparser.add_argument('action', choices=['info', 'values'])
    tmc_subparser.set_defaults(func=ClientSession.tmc_channel)

    subparser = subparsers.add_parser('write-image', help="write an image onto mass storage")
    subparser.add_argument('-w', '--wait', type=float, default=10.0)
    subparser.add_argument('-p', '--partition', type=int, help="partition number to write to")
    subparser.add_argument('--skip', type=int, default=0,
                           help="skip n 512-sized blocks at start of input")
    subparser.add_argument('--seek', type=int, default=0,
                           help="skip n 512-sized blocks at start of output")
    subparser.add_argument('filename', help='filename to boot on the target')
    subparser.set_defaults(func=ClientSession.write_image)

    subparser = subparsers.add_parser('reserve', help="create a reservation")
    subparser.add_argument('--wait', action='store_true',
                           help="wait until the reservation is allocated")
    subparser.add_argument('--shell', action='store_true',
                           help="format output as shell variables")
    subparser.add_argument('--prio', type=float, default=0.0,
                           help="priority relative to other reservations (default 0)")
    subparser.add_argument('filters', metavar='KEY=VALUE', nargs='+',
                           help="required tags")
    subparser.set_defaults(func=ClientSession.create_reservation)

    subparser = subparsers.add_parser('cancel-reservation', help="cancel a reservation")
    subparser.add_argument('token', type=str, default=token, nargs='?' if token else None)
    subparser.set_defaults(func=ClientSession.cancel_reservation)

subparser.set_defaults(func=ClientSession.digital_io)

    subparser = subparsers.add_parser('console',
                                      aliases=('con',),
                                      help="connect to the console")
    subparser.add_argument('-l', '--loop', action='store_true',
                           help="keep trying to connect if the console is unavailable")
    subparser.add_argument('name', help="optional resource name", nargs='?')
    subparser.set_defaults(func=ClientSession.console)

    subparser = subparsers.add_parser('fastboot',
                                      help="run fastboot")
    subparser.add_argument('fastboot_args', metavar='ARG', nargs=argparse.REMAINDER,
                           help='fastboot arguments')
    subparser.add_argument('--wait', type=float, default=10.0)
    subparser.set_defaults(func=ClientSession.fastboot)

    subparser = subparsers.add_parser('bootstrap',
                                      help="start a bootloader")
    subparser.add_argument('-w', '--wait', type=float, default=10.0)
    subparser.add_argument('filename', help='filename to boot on the target')
    subparser.add_argument('bootstrap_args', metavar='ARG', nargs=argparse.REMAINDER,
                           help='extra bootstrap arguments')
    subparser.set_defaults(func=ClientSession.bootstrap)

    subparser = subparsers.add_parser('sd-mux',
                                      help="switch USB SD Muxer")
    subparser.add_argument('action', choices=['dut', 'host', 'off', 'client'])
    subparser.set_defaults(func=ClientSession.sd_mux)

    subparser = subparsers.add_parser('ssh',
                                      help="connect via ssh (with optional arguments)")