private static extern bool stpUnitySetCameraAvailableDelegate(NodeHandler.AvailableDelegate cameraAvailable);
private static extern void stpUnitySetMaterialDefinitionAvailableDelegate(NodeHandler.AvailableDelegate materialDefinitionAvailable);
private static extern bool stpUnitySetTextureAvailableDelegate(NodeHandler.AvailableDelegate textureAvailable);
private static extern void stpUnitySetMeshInstanceAvailableDelegate(NodeHandler.AvailableDelegate meshInstanceAvailable);