/// \param[out] theValue numerical characteristic of constraint (e.g. distance)
/// \param[out] theAttributes list of attributes to be filled
virtual void getAttributes(double& theValue, std::vector<EntityWrapperPtr>& theAttributes);
/// \param[out] theValue numerical characteristic of constraint (e.g. distance)
/// \param[out] theAttributes list of attributes to be filled
virtual void getAttributes(double& theValue, std::vector<EntityWrapperPtr>& theAttributes);