/// among attributes listed in the arguments
/// \param theAttribute an attribute to check
/// \param theArguments a filter parameters
/// \param theError error message
SKETCHPLUGIN_EXPORT virtual bool isValid(const AttributePtr& theAttribute,
const std::list<std::string>& theArguments,
/// among attributes listed in the arguments
/// \param theAttribute an attribute to check
/// \param theArguments a filter parameters
/// \param theError error message
SKETCHPLUGIN_EXPORT virtual bool isValid(const AttributePtr& theAttribute,
const std::list<std::string>& theArguments,