[NewObject, Throws] Promise<[[B2G/Bluetooth/WebBluetooth-v2/BluetoothDiscoveryHandle|BluetoothDiscoveryHandle]]> [[B2G/Bluetooth/WebBluetooth-v2/BluetoothAdapter#startLeScan.28sequence.3CDOMString.3E_aServiceUuids.29|startLeScan(sequence<DOMString> aServiceUuids)]];
[NewObject, Throws] Promise<void> [[B2G/Bluetooth/WebBluetooth-v2/BluetoothAdapter#stopLeScan.28BluetoothDiscoveryHandle_aDiscoveryHandle.29|stopLeScan(BluetoothDiscoveryHandle aDiscoveryHandle)]];
[NewObject, Throws] Promise<[[B2G/Bluetooth/WebBluetooth-v2/BluetoothGattServer#BluetoothGattServer|BluetoothGattServer]]> openGattServer();
};