xn.Context.FindExistingNode C# (CSharp) Method

        public ProductionNode FindExistingNode(NodeType type)
        {
            IntPtr nodeHandle;
            UInt32 status = OpenNIImporter.xnFindExistingNodeByType(this.InternalObject, type, out nodeHandle);
            WrapperUtils.CheckStatus(status);
            return CreateProductionNodeObject(nodeHandle, type);
        }

    void Start()
    {
        Debug.Log ("Start(): Initializing nodes.");

        this.context = new Context (SAMPLE_XML_FILE);
        this.depth = context.FindExistingNode (NodeType.Depth) as DepthGenerator;
        if (this.depth == null) {
            Debug.LogError ("Viewer must have a depth node!");
        }
        this.hands = context.FindExistingNode (NodeType.Hands) as HandsGenerator;
        if (this.hands == null) {
            Debug.LogError ("Viewer must have a hands node!");
        }
        this.gestures = context.FindExistingNode (NodeType.Gesture) as GestureGenerator;
        if (this.gestures == null) {
            Debug.LogError ("Viewer must have a gestures node!");
        }

        this.hands.HandCreate += new HandsGenerator.HandCreateHandler (hands_HandCreate);
        this.hands.HandUpdate += new HandsGenerator.HandUpdateHandler (hands_HandUpdate);
        this.hands.HandDestroy += new HandsGenerator.HandDestroyHandler (hands_HandDestroy);

        this.gestures.AddGesture ("Wave");
        this.gestures.AddGesture ("RaiseHand");
        this.gestures.GestureRecognized += new GestureGenerator.GestureRecognizedHandler (gestures_GestureRecognized);
        this.gestures.StartGenerating ();
    }