Bug: Deleting concept does not delete the reference
null pointers are raised
(from redmine: issue id 448, created on 2018-01-22tgradl, closed on 2018-01-22)
- Relations:
- relates #434
null pointers are raised
(from redmine: issue id 448, created on 2018-01-22tgradl, closed on 2018-01-22)