The concept Kinetic::Delaunay_triangulation_event_log_visitor_3 provides a model of Kinetic::DelaunayTriangulationVisitor_3 and Kinetic::EventLogVisitor which logs edge and facet flip events.
Kinetic::DelaunayTriangulationVisitor_3, Kinetic::EventLogVisitor
Kinetic::Delaunay_triangulation_3<Traits, Triangulation, Visitor>