private static extern ReturnStatus LeapIERemoveShapeDescription(ref INTERACTION_SCENE scene, ref INTERACTION_SHAPE_DESCRIPTION_HANDLE handle);
private static extern ReturnStatus LeapIECreateShapeInstance(ref INTERACTION_SCENE scene, ref INTERACTION_SHAPE_DESCRIPTION_HANDLE handle, ref INTERACTION_TRANSFORM transform, ref INTERACTION_CREATE_SHAPE_INFO shapeInfo, out INTERACTION_SHAPE_INSTANCE_HANDLE instance);
private static extern ReturnStatus LeapIEAddShapeDescription(ref INTERACTION_SCENE scene, IntPtr pDescription, out INTERACTION_SHAPE_DESCRIPTION_HANDLE handle);