sendMessageToDevice method
Sends message to a given device given its endpointId
Implementation
void sendMessageToDevice(String endpointId, String message) async {
Device? device = _findDevice(connectedDevices, endpointId);
if (device == null) {
logger.e("Could not find device $endpointId");
return;
}
var nbMessage = NearbyMessage.fromString(message);
authenticationManager?.sign(nbMessage);
device.sendMessage(nbMessage);
}