+ GEOMAPI_EXPORT
+ const std::shared_ptr<GeomAPI_XY> added(const std::shared_ptr<GeomAPI_XY>& theArg);
+ /// result is difference between coordinates of this and the given argument
+ GEOMAPI_EXPORT
+ const std::shared_ptr<GeomAPI_XY> decreased(const std::shared_ptr<GeomAPI_XY>& theArg);