public async Task DisconnectAsync(CancellationToken cancellationToken)
{
var cancelToken = cancellationToken != null ? cancellationToken : CancellationToken.None;
var disconnectOptions = new MqttClientDisconnectOptions {
ReasonString = "Bridge disconnect"
};
await LocalClient.DisconnectAsync(disconnectOptions, cancelToken);
await DeviceClient.CloseAsync(cancelToken);
}
