/// Called on change of any argument-attribute of this object
/// \param theID identifier of changed attribute
SKETCHPLUGIN_EXPORT virtual void attributeChanged(const std::string& theID);
/// Called on change of any argument-attribute of this object
/// \param theID identifier of changed attribute
SKETCHPLUGIN_EXPORT virtual void attributeChanged(const std::string& theID);
/// Updates the "reversed" flag
/// \param isReversed whether the arc will be reversed
void setReversed(bool isReversed);
/// Updates the "reversed" flag
/// \param isReversed whether the arc will be reversed
void setReversed(bool isReversed);