bool _equivalenceRelationships_OnAdd(EquivalenceRelationship item)
 {
     return(BeforeAddNewRelationship(item));
 }
 public void Add(EquivalenceRelationship equivalenceRelationship)
 {
     Graph.Add(equivalenceRelationship);
 }
 /// <summary>
 /// Adds EquivalenceRelationship to the graph.
 /// </summary>
 /// <param name="equivalenceRelationship"></param>
 public void Add(EquivalenceRelationship equivalenceRelationship)
 {
     EquivalenceRelationships.Add(equivalenceRelationship);
 }