Make print() and check() functions from LandmarkBase virtual
Issue similar to #497 (closed) but for Landmark-derived classes.
Issue similar to #497 (closed) but for Landmark-derived classes.
498-make-print-and-check-functions-from-landmarkbase-virtual to address this issue created branch 498-make-print-and-check-functions-from-landmarkbase-virtual to address this issue
mentioned in merge request !480 (merged)