data()->addAttribute(SketchPlugin_Point::COORD_ID(), GeomDataAPI_Point2D::typeId());
data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
data()->addAttribute(SketchPlugin_Point::COORD_ID(), GeomDataAPI_Point2D::typeId());
data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());