static extern NSString RectEdgeDescription(RectEdge rectEdge);
static extern bool RectEdgeEqualToRectEdge(RectEdge rectEdge1, RectEdge rectEdge2);
static extern NSString RectEdgeDescription(RectEdge rectEdge);
static extern bool RectEdgeEqualToRectEdge(RectEdge rectEdge1, RectEdge rectEdge2);