How to use the vott-ct/lib/js/CanvasTools/Core/RegionData.RegionDataType.Point function in vott-ct

public static regionTypeToType = (regionType: RegionType) => {
        let type;
        switch (regionType) {
            case RegionType.Rectangle:
                type = RegionDataType.Rect;
                break;
            case RegionType.Polygon:
                type = RegionDataType.Polygon;
                break;
            case RegionType.Point:
                type = RegionDataType.Point;
                break;
            case RegionType.Polyline:
                type = RegionDataType.Polyline;
                break;
            default:
                break;
        }
        return type;
    }