/// <summary>
        /// Starts up ZigBee network discoverer. This adds a listener to wait for the network to go online.
        /// </summary>
        public void Startup()
        {
            Log.Debug("Network discovery task: starting");

            _initialized = true;

            _networkManager.AddCommandListener(this);
            _networkManager.AddAnnounceListener(this);

            // Start discovery from root node.
            // StartNodeDiscovery(0);
        }