public void Remove(ParticipationDescription thing)
 {
     base.BaseRemove(GetElementKey(thing));
 }
 public void Remove(ParticipationDescription thing)
 {
     base.BaseRemove(GetElementKey(thing));
 }
 public void Add(ParticipationDescription thing)
 {
     base.BaseAdd(thing);
 }
 public void Add(ParticipationDescription thing)
 {
     base.BaseAdd(thing);
 }