How to use the usb-detection.startMonitoring function in usb-detection

public init() {
        this.keyboardEvents.addSettingsListener(this.onSettingsChanged);
        this.keyboardEvents.addStateChangeListener(this.onStateChangeRequested);

        usbDetect.startMonitoring();

        // There's a filtered search, but it seems broken...
        usbDetect.find((error: any, devices: any) => {
            for (const device of devices) {
                if (device.vendorId === 9456) {
                    this.logger.info("Found a keyboard.");
                    this.setupKeyboard();
                }
            }
        });

        usbDetect.on("remove:9456", (device: any) => {
            this.logger.info("Removed a keyboard.");
            this.disconnectKeyboard();
        });

public static startMonitoring() {
        if (this.motoringCallCount++ === 0) {
            this.updateDeviceList(0, ...this.allTypes);

            // Dongle devices can be connected using usb events
            usbDetect.on(
                `change:${SteamHidId.Vendor}:${SteamHidId.DongleProduct}`,
                () => this.updateDeviceList(1000, "dongle"),
            );
            usbDetect.on(
                `change:${SteamHidId.Vendor}:${SteamHidId.WiredProduct}`,
                () => this.updateDeviceList(1000, "wired"),
            );

            usbDetect.startMonitoring();
        }
    }

public async attached() {
    this.devices = await usbDetect.find();

    usbDetect.on('change', async device => {
      this.devices = await usbDetect.find();
    });

    usbDetect.startMonitoring();
  }
}