Reflection and Invoking Method from Java to Kotlin

I'm trying to convert the following reflection into Kotlin. The following uses reflection to call an RFCOMMs function so it can take a port/channel as an input instead of UUID. I have all my program in Kotlin. Anyone know how to write this in Kotlin?

int bt_port_to_connect = 5;
BluetoothDevice device = mDevice;
BluetoothSocket deviceSocket = null;
...

// IMPORTANT: we create a reference to the 'createInsecureRfcommSocket' method
// and not(!) to the 'createInsecureRfcommSocketToServiceRecord' (which is what the 
// android SDK documentation publishes

Method m = device.getClass().getMethod("createInsecureRfcommSocket", new Class[] {int.class});

deviceSocket = (BluetoothSocket) m.invoke(device,bt_port_to_connect);