public Builder bluetoothDevice(@NonNull BluetoothDevice bluetoothDevice) {
            this.bluetoothDevice = bluetoothDevice;
            return this;
        }
Sets a bluetooth device. Calling this method is not required.
mockrxandroidble/src/main/java/com/polidea/rxandroidble2/mockrxandroidble/RxBleDeviceMock.java