How to use the aioesphomeapi.APIClient function in aioesphomeapi

async def fetch_device_info(self):
        """Fetch device info from API and return any errors."""
        cli = APIClient(self.hass.loop, self._host, self._port, "")

        try:
            await cli.connect()
            device_info = await cli.device_info()
        except APIConnectionError as err:
            if "resolving" in str(err):
                return "resolve_error", None
            return "connection_error", None
        finally:
            await cli.disconnect(force=True)

        return None, device_info

async def async_setup_entry(hass: HomeAssistantType, entry: ConfigEntry) -> bool:
    """Set up the esphome component."""
    hass.data.setdefault(DATA_KEY, {})

    host = entry.data[CONF_HOST]
    port = entry.data[CONF_PORT]
    password = entry.data[CONF_PASSWORD]

    cli = APIClient(
        hass.loop,
        host,
        port,
        password,
        client_info=f"Home Assistant {const.__version__}",
    )

    # Store client in per-config-entry hass.data
    store = Store(
        hass, STORAGE_VERSION, STORAGE_KEY.format(entry.entry_id), encoder=JSONEncoder
    )
    entry_data = hass.data[DATA_KEY][entry.entry_id] = RuntimeEntryData(
        client=cli, entry_id=entry.entry_id, store=store
    )

    async def on_stop(event: Event) -> None:

async def try_login(self):
        """Try logging in to device and return any errors."""
        cli = APIClient(self.hass.loop, self._host, self._port, self._password)

        try:
            await cli.connect(login=True)
        except APIConnectionError:
            await cli.disconnect(force=True)
            return "invalid_password"

        return None