How to use the apio.managers.system.System function in apio

def cli(ctx, lsftdi, lsusb, lsserial, info):
    """System tools.\n
       Install with `apio install system`"""

    exit_code = 0

    if lsftdi:
        exit_code = System().lsftdi()
    elif lsusb:
        exit_code = System().lsusb()
    elif lsserial:
        exit_code = System().lsserial()
    elif info:
        click.secho('Platform: ', nl=False)
        click.secho(get_systype(), fg='yellow')
    else:
        click.secho(ctx.get_help())

    ctx.exit(exit_code)

def cli(ctx, lsftdi, lsusb, lsserial, info):
    """System tools.\n
       Install with `apio install system`"""

    exit_code = 0

    if lsftdi:
        exit_code = System().lsftdi()
    elif lsusb:
        exit_code = System().lsusb()
    elif lsserial:
        exit_code = System().lsserial()
    elif info:
        click.secho('Platform: ', nl=False)
        click.secho(get_systype(), fg='yellow')
    else:
        click.secho(ctx.get_help())

    ctx.exit(exit_code)

def cli(ctx, lsftdi, lsusb, lsserial, info):
    """System tools.\n
       Install with `apio install system`"""

    exit_code = 0

    if lsftdi:
        exit_code = System().lsftdi()
    elif lsusb:
        exit_code = System().lsusb()
    elif lsserial:
        exit_code = System().lsserial()
    elif info:
        click.secho('Platform: ', nl=False)
        click.secho(get_systype(), fg='yellow')
    else:
        click.secho(ctx.get_help())

    ctx.exit(exit_code)

def _check_ftdi(self, board, board_data, ext_ftdi_id):
        if 'ftdi' not in board_data:
            raise Exception('Missing board configuration: ftdi')

        desc_pattern = '^' + board_data.get('ftdi').get('desc') + '$'

        # Match the discovered FTDI chips
        ftdi_devices = System().get_ftdi_devices()
        if len(ftdi_devices) == 0:
            # Board not available
            raise Exception('board ' + board + ' not available')
        for ftdi_device in ftdi_devices:
            index = ftdi_device.get('index')
            if ext_ftdi_id and ext_ftdi_id != index:
                # If the --device options is set but it doesn't match
                # with the detected index, skip the port.
                continue
            if re.match(desc_pattern, ftdi_device.get('description')):
                # If matches the description pattern
                # return the index for the FTDI device.
                return index

def check_usb(self, board, board_data):
        if 'usb' not in board_data:
            raise Exception('Missing board configuration: usb')

        usb_data = board_data.get('usb')
        hwid = '{0}:{1}'.format(
            usb_data.get('vid'),
            usb_data.get('pid')
        )
        found = False
        for usb_device in System().get_usb_devices():
            if usb_device.get('hwid') == hwid:
                found = True
                break

        if not found:
            # Board not connected
            if 'tinyprog' in board_data:
                click.secho(
                    'Activate bootloader by pressing the reset button',
                    fg='yellow')
            raise Exception('board ' + board + ' not connected')